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New Multi-GPU Technology With No Strings Attached

Vigile writes "Multi-GPU technology from both NVIDIA and ATI has long been dependent on many factors including specific motherboard chipsets and forcing gamers to buy similar GPUs within a single generation. A new company called Lucid Logix is showing off a product that could potentially allow vastly different GPUs to work in tandem while still promising near-linear scaling on up to four chips. The HYDRA Engine is dedicated silicon that dissects DirectX and OpenGL calls and modifies them directly to be distributed among the available graphics processors. That means the aging GeForce 6800 GT card in your closet might be useful once again and the future of one motherboard supporting both AMD and NVIDIA multi-GPU configurations could be very near."

179 comments

  1. No strings? by Plantain · · Score: 5, Funny

    If there's no strings, how are they connected?

    --
    No, but I did throw granola at a deaf person once
    1. Re:No strings? by Anonymous Coward · · Score: 2, Funny

      It's a GPU orgy. They'll find a way to connect.

    2. Re:No strings? by x2A · · Score: 5, Funny

      The theory will fit, there will be strings, we'll add more dimensions if we need to.

      --
      The revolution will not be televised... but it will have a page on Wikipedia
    3. Re:No strings? by Anonymous Coward · · Score: 1, Funny

      Tubes. Defiantly a series of tubes.

    4. Re:No strings? by Anonymous Coward · · Score: 0

      Duct Tape.

    5. Re:No strings? by Curtman · · Score: 1

      Tubes.. A whole series of them.

    6. Re:No strings? by philspear · · Score: 4, Funny

      I'm sure there's a superstring theory joke in here somewhere. Unfortunately I don't understand string theory. I guess it's okay, since apperantly no one else does either.

      I guess I'll just reference XKCD

      http://xkcd.com/171/

    7. Re:No strings? by Anonymous Coward · · Score: 0

      Well there is that Michio Kaku guy http://www.mkaku.org/ , I think he understands atring theory.
      My question is 'How Long is a piece of string?'

    8. Re:No strings? by mad_minstrel · · Score: 1

      Via a series of tubes.

      --
      May the source be with you.
    9. Re: No strings? by srk2040 · · Score: 0

      I for one will welcome our new multi GPU overlord.

    10. Re:No strings? by DiamondMX · · Score: 1

      I for one, welcome our new Beowolf Cluster of Linux-running series of tube Overlords.

  2. AMD and NVIDIA?? by iduno · · Score: 2, Interesting

    is that suppose to be ATI and NVIDIA

    1. Re:AMD and NVIDIA?? by Deltaspectre · · Score: 1
      --
      My UID is prime... is yours?
    2. Re:AMD and NVIDIA?? by Spatial · · Score: 2, Funny

      Shit, it's last year already?

    3. Re:AMD and NVIDIA?? by Ant+P. · · Score: 1

      Is that supposed to be "supposed"?

    4. Re:AMD and NVIDIA?? by maxume · · Score: 1

      For some people, it is already tomorrow.

      --
      Nerd rage is the funniest rage.
    5. Re:AMD and NVIDIA?? by gEvil+(beta) · · Score: 0, Redundant

      Is that supposed to be "supposed"?

      I suppose so....

      --
      This guy's the limit!
    6. Re:AMD and NVIDIA?? by Surt · · Score: 0, Redundant

      I suppose you meant is that "suppose" supposed to be "supposed"

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    7. Re:AMD and NVIDIA?? by Surt · · Score: 0, Redundant

      Redundant? I have twice as much suppose!
      Nail em metamods!

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    8. Re:AMD and NVIDIA?? by palegray.net · · Score: 1

      For people like William Gibson, it's always tomorrow... or close to it.

    9. Re:AMD and NVIDIA?? by Anonymous Coward · · Score: 0

      Come on you fucking idiot mods, "redundant" is NOT synonymous for "stupid question". Read a definition for the word, then read the fucking FAQ. The ONLY time a post is redundant is if it's posting THE SAME THING AS SOMEONE ELSE.

      http://slashdot.org/faq/com-mod.shtml#cm2500

      Redundant posts are ones which add no new information, but instead take up space with repeating information either in the Slashdot post, the attached links, or lots of previous comments. For instance, some posters cut and paste otherwise legitimate comments in multiple places in the same discussion; the pasted versions are Redundant.

    10. Re:AMD and NVIDIA?? by Surt · · Score: 1

      Redundant? Who else complained about the moderation?
      This one is even more deserving of harsh metamoderation.

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
  3. Interesting by dreamchaser · · Score: 4, Informative

    I gave TFA a quick perusal and it looks like some sort of profiling is done. I was about to ask about how it handled load balancing when using GPU's of disparate power, but perhaps that has something to do with it. It may even run some type of micro-benchmarks to determine which card has more power and then distribute the load accordingly.

    I'll reserve judgement until I see reviews of it really working. From TFA it looks like it has some interesting potential capabilities, especially for multi-monitor use.

    1. Re:Interesting by argent · · Score: 3, Insightful

      It seems to be using feedback from the rendering itself. If one GPU falls behind, it sends more work to the other GPU. It may have some kind of database of cards to prime the algorithm, but there's no reason it has to run extra benchmarking jobs.

    2. Re:Interesting by The+Ancients · · Score: 1

      Perhaps it keeps shovelling work to each GPU until it notices an increase in time getting the results back, and then surmises that GPU is at it's maximum load?

    3. Re:Interesting by dreamchaser · · Score: 1

      True, but I was thinking that the software could profile/benchmark both cards at startup. What you say makes sense though, and like I said I only gave TFA a cursory viewing.

    4. Re:Interesting by x2A · · Score: 4, Informative

      "It seems to be using feedback from the rendering itself"

      Yep it does look like it's worked out dynamically; the article states that you can start watching a movie on another monitor while scene rendering on another, and it will compensate by sending fewer tasks to the busy card. Simplest way I'd assume to do this would be to keep feeding tasks into each cards pipeline until the scene is rendered. If one completes tasks quicker than the other, it will get more tasks fed in. I guess you'd either need to load the textures into all cards, or the rendering of sections of the scene could have to be decided in part by which card as textures it needs already in its texture memory.

      I guess we're not gonna know a huge amount as these are areas they're understandably keeping close to their chests.

      --
      The revolution will not be televised... but it will have a page on Wikipedia
    5. Re:Interesting by TerranFury · · Score: 2, Interesting

      I gave TFA a quick perusal

      FYI, this is a very common mistake in English, and loathe though I am to be a vocabulary Nazi, I think pointing it out here might benefit other Slashdot readers:

      The verb "to peruse" means to read thoroughly and slowly. It does not mean "to skim" -- quite the opposite!

      (Unfortunately, it seems that even the OED is giving up this fight, so maybe I should too.)

      That's it for this post. Cheers!

    6. Re:Interesting by MadnessASAP · · Score: 1

      Especially since different cards will perform different operations faster then others. One I specifically ran into was the nVidia 5(6?)600 which although a fast card at the time, its PS2.0 implementation was so slow to be practically unusable and many games overrode it and forced it back to PS1.1.

      --
      I may agree with what you say, but I will defend to the death your right to face the consequences of saying it.
    7. Re:Interesting by ozphx · · Score: 5, Insightful

      Put it this way, if it was a disparate CPU multiprocessor board, and the summary said "Perhaps my p4 will now be useful again", everyone would be laughing.

      A 6800GT would be an insignificant fraction of a new card, and would still be under 10% of a $50 no-name 8 series (while still sucking down the same wattage).

      Considering that matched SLI is usually a waste of money - you can buy that second card in a years time when your current one shows age, and end up with a better card than twice your previous one (and supporting Shader Model Super Titrenderer 7), which your old card can't do), I'm not sure how this is going to be of much benefit.

      If it was useful to jam a bunch of cheap chips in then the card manufacturers would be doing it on more of a scale than the "desk heater dual" cards (which are basically SLI-in-a-box) at double price. You can't get a card with 4x 6800 chips at $5 each, because they'd be destroyed by the $10 8 series chip on a $50 card.

      --
      3laws: No freebies, no backsies, GTFO.
    8. Re:Interesting by hairyfeet · · Score: 2, Interesting

      That was the Geforce FX 5xxx series. The PS 2.0 implementation was truly horrible. I have a FX5200 left over from when I gave my oldest nephew my 6200 when I upgraded. The 5200 was pretty much useless for the games that came out at the time. Poor little fella was trying to run HL2 on it. I have found the 6xxx much better for casual gaming,and I've found my 7600GS rocks for the games I play like FEAR. But trying to game on an FX card was truly a horrible experience,the Geforce 4 was actually better. But as always this is my 02c,YMMV

      --
      ACs don't waste your time replying, your posts are never seen by me.
    9. Re:Interesting by TheThiefMaster · · Score: 2, Interesting

      What about the fact that different cards give different results for texture filtering? Specifically their choice of mip level and anisotropic filtering. Think circle vs square differences.

      Hell, some cards implement anti-aliasing differently to others.

    10. Re:Interesting by blahplusplus · · Score: 1

      "Put it this way, if it was a disparate CPU multiprocessor board, and the summary said "Perhaps my p4 will now be useful again", everyone would be laughing."

      I'm sure the article was referring to using same generation tech with different GPU's, and the the fact that you could use cards of different speeds/generations was just a spin off, unless there is actually some kind of application where this is useful.

    11. Re:Interesting by Anonymous Coward · · Score: 0

      Legitimate 8-series cards haven't fallen below $50 in price yet, with 8500 and lower "budget" cards performing at a significantly lower level than a 6800gt. While a next-generation card may have more instructions, the low-end chips often have a narrow memory bus (like the 8600), or fewer stream processors than a high-end card from a previous generation.

      Paired with the way that new games usually don't use newer card features, and the overall disappointment of directx 10, an older card still looks pretty decent.

      On the other hand, I still can't see much more use for this type of setup than as a comedy. I'm waiting to set up a XCrossfireSLI configuration with a geforce4800 and a radeon hd4850.

    12. Re:Interesting by EmperorKagato · · Score: 1

      According to the WorldNet Search (princeton.edu) perusal's definition is reading carefully with intent to remember and carefully meaining "taking care or paying attention". The parent must have meant he spent a brief (quick) moment looking over the article yet his attention was focused entirely on the article looking for key information as if he was drawing a summary from the article.

      --
      ----- You know you have ego issues when you register a domain in your name.
    13. Re:Interesting by Anonymous Coward · · Score: 0

      Wow. Just wow. Who the fuck keeps abusing the Redundant mod??? Whatever the fuck else this post is, it is NOT redundant.

      http://slashdot.org/faq/com-mod.shtml#cm2500

      Redundant posts are ones which add no new information, but instead take up space with repeating information either in the Slashdot post, the attached links, or lots of previous comments. For instance, some posters cut and paste otherwise legitimate comments in multiple places in the same discussion; the pasted versions are Redundant.

      See that? That's straight from the fucking FAQ. Even reposting something already posted in one or two other posts does not qualify as Redundant.

    14. Re:Interesting by frieko · · Score: 1

      Where can I get more information about this "Super Titrenderer 7"?

    15. Re:Interesting by Anonymous Coward · · Score: 0

      "and would still be under 10% of a $50 no-name 8 series (while still sucking down the same wattage)."

      Actually that is not true. I had a 6600, but it broke so I had to buy a new card. Got an 8800 GS (cheapest the high street had) and it is BARELY better than the old 6600.

    16. Re:Interesting by default+luser · · Score: 2, Interesting

      An especially troublesome aspect of pairing mis-matched cards: whatever this technology is, it can't use alternate-frame rendering (AFR, where alternating frames are sent to alternating cards).

      You can't make AFR work with an unbalanced pair of cards because the fastest framerate you can get is limited to 2x the speed of the slowest card. Let me explain: if you paired a new card (100fps) with one that had 1/2 the speed (50fps), if you had perfect scaling, you could technically get 150fps from the pair. But if they used AFR and took turns rendering one frame at a time, the most you could see from the pair is twice the old card's framerate, or 100fps.

      AFR could only give you 150fps in this case if the game engine could tell you the future, and supply a frame for rendering one frame in-advance to the older card. This is simply not possible, and the game engine supplies frames only in real time.

      So, this means that you have to use a better method to balance the workload between the two (or more) cards. But this was already attempted - Nvidia offered split-screen rendering for SLI, and for a time ATI offered tiled rendering, but both methods had major compatibility issues (and split-screen rendering was notorious for tearing artifacts). Today, both ATI and Nvidia support AFR as the default rendering mode, and very seldom do they step oiutside this circle.

      The fact is, other methods besides AFR have already been considered, but in the end AFR is the method the industry has consistently fallen back on. The only real downside of AFR is you need balanced cards, or it won't give you any benefit. Unfortunately, I'm hesitant to believe that ANY company can come up with a better solution for SLI, even a third-party solutions like these.

      --

      Man is the animal that laughs.
      And occasionally whores for Karma.

    17. Re:Interesting by voxel · · Score: 1

      My sick friends as a joke bought me Nvidia's 8800 OGC card which supports "Super Cockrenderer 3" only.

      Bastards.

      --
      Modesty is one of life's greatest attributes
    18. Re:Interesting by voxel · · Score: 1

      It renders everything to look sorta like this:

          o===3

      --
      Modesty is one of life's greatest attributes
    19. Re:Interesting by BOFHelsinki · · Score: 1

      DX10 to some extent and DX11 to a large extent are exposing anisotropic texture filtering and multisamples/anti-aliasing via the API, giving developers better contol over these previously fixed and chip-specific functions. This standardization would entail that the results are going to get more uniform across different cards.

      Not that this product sounds terribly useful, as noted by others here... One the one hand a pair of dual-chip Radeon cards in Crossfire probably gets very close to the scalability without the extra hardware (expense), and on the other hand I can't imagine this product ending up priced for hobbyists willing to recycle old cards. (On the gripping hand I didn't RTFA though...)

  4. quick by Sir_Real · · Score: 0

    Someone port java to opengl.

    Seriously. That would rock.

    1. Re:quick by jfim · · Score: 2, Insightful

      Someone port java to opengl.

      Seriously. That would rock.

      You can use OpenGL from Java with JOGL. Or were you thinking of running a Java or J2EE stack on your GPU? (That would be a really bad idea, in case there were any doubts)

    2. Re:quick by lee1026 · · Score: 1

      For extremely parallel code, why not?

    3. Re:quick by x2A · · Score: 1

      GPUs very good at running a series of highly parallel maths... but comparisons and conditional jumps required for general computing erm... stuff?

      I dunno, think that used to be the case, not sure whether it still is but I'd guess so.

      --
      The revolution will not be televised... but it will have a page on Wikipedia
    4. Re:quick by Anonymous Coward · · Score: 0

      No, the other way around, so you don't just end up with slow OpenGL.

    5. Re:quick by JuzzFunky · · Score: 1

      Have a look at NVIDIA's CUDA for an example of General Purpose GPU processing.

      --
      Unexpect the expected!
    6. Re:quick by billcopc · · Score: 2, Funny

      No no, you're thinking "port OpenGL to Java". I want to see a Java VM written in OpenGL shader language.

      Maybe having 384 lame little stream processors will make Java fast enough to compete with... um... Borland Pascal on a Cyrix 386.

      --
      -Billco, Fnarg.com
    7. Re:quick by MadnessASAP · · Score: 1

      Sort of, CUDA requires that every process complete in the same time. So something like a ray tracing algorithm that will complete in the same amount of time regardless of inputs works great whereas some other systems that use branching and looping wont work.

      --
      I may agree with what you say, but I will defend to the death your right to face the consequences of saying it.
    8. Re:quick by x2A · · Score: 2, Informative

      A quick glance does look like this is the case. It's like having a load of extra ALUs which can speed up number crunching in apps where the same or similar actions need to be performed against a series of values, such as working with matrices, FFTs, signal encoding/decoding. But GP computing also needs flow control; conditional branching, which still needs the main CPU. (Memory management also, but GPUs do have at least basic memory management as they have increasingly large chunks of memory for caching textures etc). Setting up the GPU to do stuff for ya takes overhead, which pays off if you're using it enough, so yeah being able to write functions that take advantage of it from languages like java could be beneficial, but you couldn't port the actual java vm over to the GPUs.

      (but still with the disclamer "from a quick glance" - deeper inspection may prove otherwise)

      --
      The revolution will not be televised... but it will have a page on Wikipedia
    9. Re:quick by rbanffy · · Score: 1

      It really depends on the architecture of the GPU's processing elements. An Intel Larrabee would have little trouble with Java. A Cell SPU port would be a bitch to do.

    10. Re:quick by drspliff · · Score: 2, Interesting

      Like... an optimizing compiler with OpenMP support that'll break down functions suitable for a GPGPU? Then based on some profiling data (both in development and runtime) it would automatically use the most optimized path, in similar vain to Intel's MT optimizations for their chips.

  5. No by x2A · · Score: 4, Informative

    ATI were bought out by AMD, so future ATI GPUs will be released by AMD.

    --
    The revolution will not be televised... but it will have a page on Wikipedia
    1. Re:No by iduno · · Score: 1

      Guess that shows how long its been since I've bought a graphics card (or even played games)

    2. Re:No by Anonymous Coward · · Score: 0

      It would be a useful boon to be able to use the weak on-board video off a motherboard in tandum with a single PCI-E card......a little boost would be nice and those chipsets a fairly power efficent. Would there be anything to prevent it?

  6. Non-Windows drivers? by argent · · Score: 4, Insightful

    Can it work with Linux or OS X?

    1. Re:Non-Windows drivers? by Anonymous Coward · · Score: 0, Troll

      Yeah cause so many Mac users customize their Mac.. and the Linux driver ABI is so stable it's worth doubling the development time to support it.

    2. Re:Non-Windows drivers? by Ant+P. · · Score: 1

      They'll have no choice if they want to stay in business. PhysX made windows-only hardware, and look what happened to them (eaten by nVidia).

    3. Re:Non-Windows drivers? by Anonymous Coward · · Score: 1, Insightful

      Ugh..the fact Ageia didn't do so hot and was bought by nVidia had NOTHING to do with the fact they didn't make drivers for OSX or Linux (i.e. 10% or less of the market) it's because there was no need for dedicated hardware since it could be incorporated into the GPU as it has been done in nVidias latest GTX2x0 series of cards.

    4. Re:Non-Windows drivers? by Anonymous Coward · · Score: 0

      Mark this as a troll if you wish, but it wasn't an attack on the OP, only on the Linux community's attitude towards driver developers (and application developers in general). While Linux remains fragmented into a dozen distributions, each running different kernels with different patches, and there is no stable ABI for driver developers or application developers, you won't see any decent drivers or closed-source apps from anything but the largest companies. It makes absolutely no business sense to develop a driver for a piece of hardware on Linux if a) you'll have a constant stream of people complaining that it doesn't work with their distribution, because there are so many configurations, and b) your driver will be broken in the near future when Linus or someone decides to randomly tweak the ABI. Nvidia did it with graphics drivers.. and they still break all the time, resulting in fun times at the console whenever I update my Ubuntu. Adobe did it with Flash.. and it worked until people decided to have 64-bit distros and include 64-bit web browsers, cause yeah, maybe I want more than 4 GB RAM on my browser; when all the browsers on Windows and Mac OS are 32-bit, and porting Flash to x64 would require rewriting all of the just-in-time compliation code in there to compile user scripts to 64-bit code rather than 32-bit. And what do these companies get in response? Just calls from the community to open-source their code.. apart from giving away their intellectual property to competitors, this solution also involves hoping that some hobbyist programmers do a decent job tweaking your code to work in their particular configurations, and then dealing with all the support issues that come in when the modified code breaks.

    5. Re:Non-Windows drivers? by arekusu · · Score: 1

      (TFA:) ...the operating system prevents multiple graphics drivers from running 3D applications at the same time.

      Multiple GPUs from different vendors could work if they ported this technology to OS X... where multiple graphics drivers have happily coexisted for years.

      (Getting an arbitrary application to understand it is running on multiple GPUs is a whole separate problem...)

    6. Re:Non-Windows drivers? by Anonymous Coward · · Score: 0

      and there is no stable ABI for driver developers or application developers, you won't see any decent drivers or closed-source apps from anything but the largest companies.

      Uh...yay?

      The last thing I want is closed source shit infesting my linux install. I don't want them to write drivers or "double development time" keeping up with the linux ABI. I want them to release the specs and let other people code the drivers.

      All the problems you described would go away if companies decided to stop fucking you in the ass with their proprietary bullshit.

    7. Re:Non-Windows drivers? by argent · · Score: 1

      Linux has a driver ABI?

  7. Math Coprocessor by Anonymous Coward · · Score: 1, Funny

    Ack! Will this outdate my math coprocessor?

    1. Re:Math Coprocessor by 9Nails · · Score: 2, Funny

      Your math co would still be good, but your turbo switch will need to be set to off.

    2. Re:Math Coprocessor by mr_mischief · · Score: 1

      What about my clock potentiometer?

    3. Re:Math Coprocessor by Anonymous Coward · · Score: 0

      Screw your math co-pro, I need to know if this technology will let me use my 30 ISA videocards together!

  8. Latency. by Anonymous Coward · · Score: 0, Troll

    Latency will be a problem. All that extra message passing and emulation layers.

    Already, most Windows 3d games lead me feeling a little disconnected compared to DOS games.
    The sound effects and graphics always lag behind the input a little.

    Try playing doom in DOS with a soundblaster, then try a modern windows game. With doom you hear and see the gun go off when you hit the fire button. In a modern 3d game, you don't.

    I've experienced the same thing over a number of different computers.

    1. Re:Latency. by Bill,+Shooter+of+Bul · · Score: 3, Insightful

      What is this 1996? That was true of Doom vs WinDoom before Direct X. I don't think I've had a problem since then.

      --
      Well.. maybe. Or Maybe not. But Definitely not sort of.
    2. Re:Latency. by Mprx · · Score: 4, Informative

      I agree this is a common problem in modern games; see http://www.gamasutra.com/view/feature/1942/programming_responsiveness.php

      Don't confuse control latency with reaction time. Reaction time will be at least 150ms for even the best players, but humans can notice time delays much smaller than best reaction time. A good rhythm game player can hit frame exact timing at 60fps -- a 17ms time window. With low enough latency the game character feels like a part of your own body, rather than something you are indirectly influencing.

      The same thing applies to GUIs, and only a very short delay will destroy that feeling of transparency of action. I never actually used BeOS myself, but I read that it was designed with low interface latency as a priority, which was why it got such good reviews for user experience.

    3. Re:Latency. by Colonel+Korn · · Score: 4, Informative

      Latency will be a problem. All that extra message passing and emulation layers.

      Already, most Windows 3d games lead me feeling a little disconnected compared to DOS games.
      The sound effects and graphics always lag behind the input a little.

      Try playing doom in DOS with a soundblaster, then try a modern windows game. With doom you hear and see the gun go off when you hit the fire button. In a modern 3d game, you don't.

      I've experienced the same thing over a number of different computers.

      Most monitors have about a 30-50 ms input lag, meaning the image is always a frame or two behind in most modern games. You can get a 0-5 ms input lag monitor, though. The DS-263n is a good example. I felt like everything was lagged ever since I switched to LCDs, but once I picked up the 263, that feeling is gone. The feeling of sound lagging input could be a different issue or it could be psychological.

      --
      "I zero-index my hamsters" - Willtor (147206)
    4. Re:Latency. by Tanman · · Score: 2, Informative

      This is most likely due to a feature on newer cards and drivers whereby the video card actually renders ahead of time. They have algorithms to predict what the next 3-5 frames will be and the GPU uses extra cycles to go ahead and render those. That way, if something happens like there turns out to be a high-geometry object that pops out and gets loaded into memory, the video card has a buffer before the user notices a drop in their framerate.

      The drawback? You get control lag. Newer drivers let you adjust this or even set it to 0 -- but you will notice that your overall FPS will decrease if you set it to 0 because the card cannot optimize ahead-of-time that way.

    5. Re:Latency. by Ironchew · · Score: 2, Funny

      The feeling of sound lagging input could be a different issue or it could be psychological.

      Or in 30-50 milliseconds it could be, y'know, the speed of sound.

    6. Re:Latency. by Anonymous Coward · · Score: 1, Interesting

      So reaction times are about 150ms, but if you know in advance, you can hit 17ms?

      That's some interesting stuff.
      As far as rhythm games go, I make my living as a musician. Most instruments.

      I wonder if I have got into the habit of intending physical actions in advance, so reaction time is less important than latency.

      In that article they mention frame jitter as well, which I think is the thing that bothers me most. My usual instruments don't do that.

    7. Re:Latency. by Bill,+Shooter+of+Bul · · Score: 1

      The article was interesting, but it doesn't explain why Doom would feel less like there was less latency. Wouldn't the main loop be the same thing?

      --
      Well.. maybe. Or Maybe not. But Definitely not sort of.
    8. Re:Latency. by porl · · Score: 1

      ....if you are sitting about 10-15m from your speakers......

      you must have a pretty big gaming setup... :)

    9. Re:Latency. by Mprx · · Score: 2, Interesting

      Absolutely, and I'm sure musicians will be most sensitive to these effects. Performance isn't just playing the notes as written, it's about phrasing/groove/swing/etc., and this requires very subtle and precise timing. And just like frame timing jitter in a game, it contributes to "feeling" of quality in a way untrained listeners will likely notice without being able to explain.

    10. Re:Latency. by Jimbob+The+Mighty · · Score: 1

      Apologies for my ignorance, but is this an issue with LCD monitors only? Is being guttertech and still using a CRT helping me to remain an LPB?

    11. Re:Latency. by RulerOf · · Score: 1

      The same thing applies to GUIs,

      And that's the only feature the iPhone has that I would readily sacrifice a hundred virgins for to obtain on my Blackberry.

      --
      Boot Windows, Linux, and ESX over the network for free.
    12. Re:Latency. by MaineCoon · · Score: 3, Informative

      Yes, CRTs have something like 1-2 ms latency + refresh rate.

      --
      Hunt your preferred prey at Aliens vs Predator MUD. Join the war at avpmud.com port 4000
    13. Re:Latency. by Anonymous Coward · · Score: 0

      It's just how trolling is nowadays.

      People are so web weary that to troll effectively you often end up being so subtle as to be either 'interesting' or 'informative'.

    14. Re:Latency. by Bill,+Shooter+of+Bul · · Score: 1

      True enough. And the sad part is I felt really bad disagreeing with him. I almost joined in. Doom II is the pinnacle of games. It has never gotten any better and it never will.

      Well, that or qubert.

      --
      Well.. maybe. Or Maybe not. But Definitely not sort of.
    15. Re:Latency. by Koiu+Lpoi · · Score: 2, Interesting

      Got an NVidia card? Go into the NVidia control panel, "Manage 3D Settings", "Maximum pre-rendered Frames", and set it to 0. I'm sure you can do something very similar with an ATI card.

      Of course, I have a feeling that it's purely psychological what you're experiencing. With a modern computer (and I'm talking about one with more than 133 MHz) the "Windows" latency is below the threshold of humans. In modern 3d games, yes, I do hear the gun go off when I click the mouse - if my computer's specs are high enough to actually play the game at 60 FPS. Doom had the exact same problem - if your computer sucked, there was latency on the gun. Have the rose-colored glasses made you forget that?

    16. Re:Latency. by Anonymous Coward · · Score: 0

      I still don't fully understand how they are doing this. Dividing up the rendering is the easy part (performance wise). The problem is that you still need to get the data off of one card, and onto the other card (connected to the monitor). This means that the output must be pulled from the vram of the unconnected card, and sent to the connected card.

      Pulling anything from the vram of a video card has historically been very slow. Has the situation changed with PCI Express, or are they doing something magic?

      BBH

    17. Re:Latency. by PhrostyMcByte · · Score: 1

      Video cards don't predict what the next frames will be - they simply let the app continue to render frames, which queue up while waiting for the screen's next refresh.

    18. Re:Latency. by bitrex · · Score: 3, Insightful

      As a recording musician I can attest to the fact that using computer based virtual instruments that have an output latency of more than about 6 or 7 milliseconds causes noticeable "lag" that's very annoying, unless one is playing the keyboard quite slowly. If the latency increases to 12-15 ms, it becomes pretty much intolerable.

    19. Re:Latency. by MR.Mic · · Score: 2, Informative

      I agree with parent 100% on the DS-263N.
      I was using exclusively CRTs up until July of this year, when my last good (professional quality) one died. I was reluctant to switch away, because most LCDs I have seen looked like crap. I was proven wrong with the DS-263N.

      I am a visual effects and game dev artist, so color accuracy and display uniformity is a must for me. I also do a lot of gaming, so input lag and scaling options (for 4:3 only games) is also a big factor.

      Before I purchased, I did a lot of reading and searching for the right monitor. I stumbled upon the LCD thread at the AnandTech forums. It had everything I needed to know about choosing the right monitor. In the "Displays du Jour" section of the post, the DS-263N was listed as being an excellent 8-bit IPS TFT with less than a frame of input lag. I read a numerous consumer reviews on the monitor, and they were also consistently favorable.

      I finally made the jump to the DS-263N, and I was not disappointed.
      It's BRIGHT, much brighter than my CRT.
      The viewing angle is amazing, and the gamma does not change when you shift your view. It only dims just a bit at extreme angles, but the dimming is uniform.
      The monitor has 1:1, aspect, and stretch scaling options. So I can happily Quake away at 1600x1200 with no pixel interpolation and only bars to the each side.

      The only two issues I have with it are:
      1) A single dead green subpixel in the corner (However, I rarely notice it. It's almost impossible to see when gaming or watching a movie)
      2) You can adjust the side bar color for viewing non-native resolutions, but it's impossible to get it completely black.

      Aside from those issues, it is one of the best monitors I have ever used.

      Unfortunately, they were discontinued from production earlier this year and the DS-265W is supposed to take its place.
      Hopefully, it will be just as good or better than the DS-263N when it's released.

    20. Re:Latency. by Anonymous Coward · · Score: 0

      You may like this then

    21. Re:Latency. by eric-x · · Score: 2, Informative

      I very much doubt that GPU's predict and render ahead.

      I think you mean that a number of frames are rendered into a FIFO queue, a delay-line. This is ofcourse rendering behind, not ahead. Often three buffers are used (on-screen, next-screen, rendering) because it reduces the time waiting for swapping the front and back buffer.

      Having more than 3 buffers smooths the fps but increases lag and does not further reduce cpu idle time.

  9. obligatory ... by bwthomas · · Score: 1, Funny

    ...

    All your GPU are belong to Lucid!

    (sorry guys)

  10. no Strings attached by Daimanta · · Score: 4, Funny

    what is attached though:

    ints
    booleans
    longs
    short
    bytes

    --
    Knowledge is power. Knowledge shared is power lost.
    1. Re:no Strings attached by Michael+Hunt · · Score: 1

      float4x4s for the most part, i'd be guessing

    2. Re:no Strings attached by Annymouse+Cowherd · · Score: 1

      char*s

    3. Re:no Strings attached by lolwhat · · Score: 3, Funny

      what is attached though:

      ints booleans longs short bytes

      what about lists, you insensitive clod!I call lisp discrimination.

    4. Re:no Strings attached by MadnessASAP · · Score: 2, Funny

      What about tuples you insensitive Python hater!

      --
      I may agree with what you say, but I will defend to the death your right to face the consequences of saying it.
    5. Re:no Strings attached by itlurksbeneath · · Score: 1

      Hey - when I started formal programming, it was in ISO Pascal. We didn't have any steenking strings, just arrays of characters. And we liked it!

      --
      Have you ever considered piracy? You'd make a wonderful Dread Pirate Roberts.
    6. Re:no Strings attached by lolwhat · · Score: 1

      Lol I don't even know how to program lisp. My primary programming language is python. I just did lisp because they have more trolls imo.

    7. Re:no Strings attached by T3Tech · · Score: 1

      So all code using *printf functions will be useless!?

      What ever will we use to represent strings? ZOMG!1

      --
      Of course I didn't RTFA... why would I do that? You really are new here aren't you? Don't let my UID fool you.
  11. Time to make them imcompatible! by TibbonZero · · Score: 3, Insightful

    So its obvious that these cards could have been working together now for some time. They aren't as incompatible as AMD and NVidia would like us to think. Of course this leaves only one course of action; they must immediately do something "weird" in their next releases to make them no longer compatible.

    --
    Tibbon
    tibbon.com
    1. Re:Time to make them imcompatible! by zappepcs · · Score: 1

      I thought that too, hopefully NVidia turns around and says "Ok, here is a cheaper version of model xyz, stripped down a bit, so you can afford to buy 4 from us for this little trick"

      I'm not holding my breath but it would be worth the money methinks, even if they only sold them in 4 packs.

    2. Re:Time to make them imcompatible! by im_thatoneguy · · Score: 4, Interesting

      Don't you mean Wierd(er).

      The reason NVidia requires such symetrical cards isn't just because of speed and frame buffer synchronization but also because different cards render different scenes slightly differently. This is the reason why OpenGL rendering isn't used very often in post production. You can't have two frames come back to you with slightly different gammas, whitepoints, blending algorithms etc etc.

      I'm actually very very curious how they intend to resolve every potential source of image inconsistancy between frame buffers. It seems like it would have to almost use the 3D Cards abstractly as a sort of CPU accelleration unit not an actual FrameBuffer generator.

    3. Re:Time to make them imcompatible! by x2A · · Score: 1

      "aren't as incompatible as AMD and NVidia would like us to think"

      Nope, only incompatible enough to need extra hardware, translation layers, drivers, and all the R&D required to produce 'em...

      --
      The revolution will not be televised... but it will have a page on Wikipedia
    4. Re:Time to make them imcompatible! by Spatial · · Score: 1

      You can already pair up unmatched AMD cards as long as they both have crossfire capability. I can't recall the exact details offhand, but I remember reading benchmarks of it on Anandtech some time ago.

    5. Re:Time to make them imcompatible! by LarsG · · Score: 3, Informative

      From the screen shots and the description, it sounds like this thing takes the d3d (or ogl) instruction stream, finds tasks that can be done in parallel and partition them up across several cards. Then it sends each stream to a card, using the regular d3d/ogl driver for the card. At the back end it merges the resulting framebuffers.

      What I'd like to know is how they intend to handle a situation where the gpus have different capabilities. If you have a dx9 and a dx10 card, will it fall back to the lowest common denominator?

      Also, what about cards that produce different results? Say, two cards that does anti-aliasing slightly different. The article says that Hydra will often change the work passed off to each card (or even the strategy for dividing work amongst the cards) on a frame by frame basis. If they produce different results you'd end up with flicker and strange artefacts.

      Sounds like interesting technology but unless they get all those edge cases right...

      --
      If J.K.R wrote Windows: Puteulanus fenestra mortalis!
    6. Re:Time to make them imcompatible! by Anonymous Coward · · Score: 0

      If the approach is straight forward enough to basically appear like an application just trying to render data, which I assume it is. Then there is no way for them to do that.

    7. Re:Time to make them imcompatible! by VeNoM0619 · · Score: 1

      The way I interpreted this was that say you have a 800x600 screen with 4 gpus. It would render 4 200x150 screens, 1 in each gpu and piece them together. So in theory in wouldn't matter about how each card renders it necessarily (DX9vsDX10) just that it does its portion of the screen. Sure artifacts will exist I'm sure, but so be it for the speed boost and this new technology?

      --
      Disclaimer: I am not god.
      We may not be created equal
      But we can be treated equal.
  12. My god... by bigtallmofo · · Score: 3, Interesting

    Next you'll need a 1,000 watt power supply just to run your computer. How long until my home computer is hooked up to a 50 amp 240 volt line?

    I mean, if one GPU is good and two GPUs are better, does that mean 5 are fantastic?

    I used to have a Radeon 1950 Pro in my current system, which is nowhere near the top of the scale in video cards (in fact, it's probably below even average). It was so loud and literally doubled the number of watts my system took while running (measured by Kill-a-Watt). I took it out and now just use the integrated Intel graphics adapter. Man, that was fast enough for me but I don't play games very often.

    --
    I'm a big tall mofo.
    1. Re:My god... by Kjella · · Score: 1

      Power saving is as usual reserved for the higher margin laptop market, much like advanced power states on the CPU. There's no good reason why a card should have to draw that much all the time when idle.

      --
      Live today, because you never know what tomorrow brings
    2. Re:My god... by x2A · · Score: 3, Insightful

      "How long until my home computer is hooked up to a 50 amp 240 volt line?"

      Mine already is... how do you usually power your computer?

      --
      The revolution will not be televised... but it will have a page on Wikipedia
    3. Re:My god... by Bureaucromancer · · Score: 4, Informative

      Presumably he's North American, we (among a few other places) use 120v lines, 240 is reserved for special high power circuits, generally only used for dryers, stoves and refrigerators (and only some of the first two).

    4. Re:My god... by mr_mischief · · Score: 1

      It might be 240 volt, but if it's 50 amps at the wall socket you might just be doing it wrong. I very seriously doubt your computer needs 12,000 VA of power.

    5. Re:My god... by ascendant · · Score: 1

      don't forget that the amount of energy a card uses doesn't change much. there's only so much energy you can dissipate with heatsinks in that small an area.
      google will tell you that personal computer power usage hasn't gone much up or down ever.
      high end cards (the 1950 was one when it came out) will always use a lot of power and minimalist ones (just like your integrated chip) will always use only a little.
      ... and people like you will always shout on about how they expect to get a 50-amp 240 volt line just for some gadget they don't even need to buy

      --
      Do not attribute to malice that which can be easily explained by incompetence.
    6. Re:My god... by Anonymous Coward · · Score: 0

      Fuck everything, we're doing 5 GPUs!

    7. Re:My god... by Anonymous Coward · · Score: 1, Informative

      Both nVidia and ATI are working on "hybrid" tech so that you can use a low-power integrated graphics chip for normal desktop/laptop use, and only use your graphics card(s) when you're playing games. Unfortunately, the nVidia version only works for nForce chipsets, and the ATI version only works with a specific AMD chipset series. You're probably out of luck if you did't build your system with the right motherboard.

    8. Re:My god... by MadnessASAP · · Score: 1

      What crazy ass fridge do you have that it needs to be hooked up to 240VAC?

      --
      I may agree with what you say, but I will defend to the death your right to face the consequences of saying it.
    9. Re:My god... by Anonymous Coward · · Score: 0

      a 120 volt line...

    10. Re:My god... by x2A · · Score: 1

      You are most correct; I recognised the 240V bit but no idea about the amps so my brain just skipped that bit :-p but the fuse in the plug is rated much lower than that so of course the comp's not drawing anything like that amount or the fuse would just blow :-)

      --
      The revolution will not be televised... but it will have a page on Wikipedia
    11. Re:My god... by ceoyoyo · · Score: 1

      And what kind of dryer / stove do you have that doesn't need 240 V? unless it's gas, of course.

    12. Re:My god... by Anonymous Coward · · Score: 0

      *50 A* 240 line? I can understand 240 V, but 50 A?

    13. Re:My god... by Anonymous Coward · · Score: 0

      "How long until my home computer is hooked up to a 50 amp 240 volt line?"

      Mine already is... how do you usually power your computer?

      15amp 110v line. It also powers several other devices.

    14. Re:My god... by Anonymous Coward · · Score: 0

      You don't get 50 amp on one line. 16A 250 is normal residence, and 32A 250A (one phase) usually has special plug already.

      So yes, the question is valid.

    15. Re:My god... by learningtree · · Score: 1

      Excuse me, but I seriously doubt that you are using a 50 amp 240 volt line.

      If its true, it amounts to a mind-boggling 50x240 = 12kW power rating (assuming power factor = 1).

      You are most probably using a 240 volts 5amp line, that is common in most parts of Asia and other countries where 240V is supplied.

    16. Re:My god... by Anonymous Coward · · Score: 0

      I power my computer from a 13 amp 230 volt socket.

      The mains electricity supply to my house is only rated up to 100 amps at 230v, and that's for my entire house. Suffice to say, I won't be running many computers if they take 50 amps each.

    17. Re:My god... by Bureaucromancer · · Score: 1

      I've never seen a stove, but my dryer doesn't need 240 and works just fine. I was actually referring to fridges and dryers that don't always use them.

    18. Re:My god... by electrosoccertux · · Score: 1

      Why did we choose to go with 120 anyways? There's more (I^2)*R losses.

  13. GeForce 6800 GT by Brad1138 · · Score: 4, Insightful

    How many people feel this is an old card that should be in a closet? If your not a hard core gamer that is a very good video card. My fastest card (out of 4 comps) is a 256meg 7600GS (comparable to a 6800GT) on an Athlon 2500+ w/1 gig mem. Plays all the games I want without a prob and is more than fast enough to run any none game app.

    --
    If you could reason with religious people, there would be no religious people
    1. Re:GeForce 6800 GT by ACMENEWSLLC · · Score: 1

      I have a 6600GTS stock overclock which plays games well on my old AMD4000+ PC. While I payed a lot of $$ back in the day, the card is worth $40 now.

      I can't help but think this chip would cost more than it's worth. I like the idea, but I also liked the idea that I could purchase another 6600 GTS and not loose the investment in my original. That didn't happen for me. I am much better off purchasing a current generation card than buying two 6600GTS.

      So the question is how much will it cost to be able to keep using my now $40 card? (Yes, I understand it is for newer PC's not my old one, but the concept still applies.)

    2. Re:GeForce 6800 GT by Pulzar · · Score: 4, Insightful

      Plays all the games I want without a prob and is more than fast enough to run any none game app.

      *Any* app? Try getting an HD camcorder and editing some video of your kid/dog/girlfriend/fish and see how well your PC does. It's easy to make generalizations about other people based on personal experience. Resist the urge to do it.

      --
      Never underestimate the bandwidth of a 747 filled with CD-ROMs.
    3. Re:GeForce 6800 GT by Fumus · · Score: 1

      Then again. If you are buying a new PC now, a 8800GT, a C2D and 2GB of RAM are cheap enough to buy and powerful enough to run anything you throw at them without much problems.

    4. Re:GeForce 6800 GT by Spatial · · Score: 1

      It seems pretty ridiculous to characterise anyone who wants to play a new game at a playable framerate as a 'hardcore gamer'. Mass Effect, Bioshock, Supreme Commander, Rainbow Six Vegas and so on are all good games for both casual or more frequent players, but would be completely unplayable on that hardware. Anyone wanting to play those games would probably feel that way.

    5. Re:GeForce 6800 GT by Anonymous Coward · · Score: 0

      8800GT? Get with the times, HD4850 runs faster, with less power, and quieter. It even challenges the GTX280.

    6. Re:GeForce 6800 GT by Anonymous Coward · · Score: 0

      I don't know about the others, but supreme commander runs perfectly fine on my 7600, even with dual screen.

    7. Re:GeForce 6800 GT by Brad1138 · · Score: 1

      Here are the system specs for BioShock, my system meets their min. sys. req. and here are the req. for R6 Vegas, my video card meets their min. sys. req. and my cpu is barely under, I didn't check the other games. There may be a couple games I can't play but there are 1000's I can.

      --
      If you could reason with religious people, there would be no religious people
    8. Re:GeForce 6800 GT by mr_mischief · · Score: 1

      You're probably not running an Athlon 2500+ for your CPU. Supreme Commander is more CPU heavy than GPU heavy. It's seriously limited by pretty much any single-core CPU out there.

    9. Re:GeForce 6800 GT by Anonymous Coward · · Score: 0

      It also costs about $100 USD more.

      I'll stick with the 8800GT thank you very much. It runs everything and is inexpensive.

    10. Re:GeForce 6800 GT by Anonymous Coward · · Score: 0

      Well it's a terrific card if all you play is Warcraft and 3 year old games, I suppose.

    11. Re:GeForce 6800 GT by PaintyThePirate · · Score: 1

      I actually do have a 6800 GT just sitting in my closet. Normally I rotate down video cards through my older computers when I buy a new one (since video cards tend to obsolete a lot faster than the rest of the computer), but I only have one computer with PCI Express.

      The 6800 GT is/was a great card, but I wanted to be able to play Oblivion, Mass Effect, and yes, Crysis, at full monitor resolution. Good video cards are not as expensive as they once were; I ended up getting an 8800 GT in the spring for around $180. This brought my 3 year old desktop up to speed with the latest games.

    12. Re:GeForce 6800 GT by Pulzar · · Score: 1

      Minimum system requirement means the game will not die on you when you run it, not that it will be playable in any reasonable sense :). Recommended system requirements is what is, well, recommended in order to properly play the game.

      And, BioShock is already a year old game!

      --
      Never underestimate the bandwidth of a 747 filled with CD-ROMs.
    13. Re:GeForce 6800 GT by MadnessASAP · · Score: 1

      Which is kind of strange when you look at something like TA Spring which has to handle far higher loads then supreme commander and yet runs on processors between 1-2GHZ

      --
      I may agree with what you say, but I will defend to the death your right to face the consequences of saying it.
    14. Re:GeForce 6800 GT by Koiu+Lpoi · · Score: 1

      It's easy to make generalizations about other people based on personal experience. Resist the urge to do it.

      You might as well tell a fish not to swim or a bird not to fly. Humans always, constantly, must make generalizations based upon personal experience, because they haven't experienced life as anybody else (excluding believers of reincarnation, of course). Next time, just politely correct them without the snarky comment.

    15. Re:GeForce 6800 GT by Mattsson · · Score: 1

      Umm... I recently bough a new computer, and a 8800GT would be more than half my entire budget for that build.
      Dual core at 3.2GHz and 4GB RAM... And a second hand ATI X1600 bough for ~$23 that runs anything I throw at it.
      (Couldn't use my old AGP-card in the new mainboard and my PCI-cards don't support dual head)

      --
      /.Mattsson - My native language is not English, so please don't whine over linguistic errors. (That's lame anyway...)
    16. Re:GeForce 6800 GT by MistrBlank · · Score: 1

      "reasonable" is subjective.

    17. Re:GeForce 6800 GT by Anonymous Coward · · Score: 0

      How in the hell would a _gaming_ 3D card speed up video editing in any way shape or form (alright, technically, I imagine it would help with overlaying some 3D graphics onto your video, but who does that besides Pixar, etc)?

    18. Re:GeForce 6800 GT by Anonymous Coward · · Score: 0

      Depends on the application being used for video editing. VirtualDub far outpaces most commercial video editing software, and is highly customizable. I use it on a 533MHz P3 with 256 megs of PC-133 and a 126 Meg GeForce Ti 4600. 4:3 aspect HD (1024x768) video renders about 5 frames per second. Imagine what that would be like on my current laptop, a dual-core 1.83 GHz Intel with 4 gigs of PC-5300 and a 512 Meg GeForce 8600.

    19. Re:GeForce 6800 GT by Anonymous Coward · · Score: 0

      His video card would still be more than capable. His cpu however might be a bit lacking.

    20. Re:GeForce 6800 GT by Anonymous Coward · · Score: 0

      What about it? HD editing doesn't use a fast CPU.. it's disk I/O bound entirely.

    21. Re:GeForce 6800 GT by Pulzar · · Score: 2, Insightful

      What about it? HD editing doesn't use a fast CPU.. it's disk I/O bound entirely.

      Well, that's just not even close to truth. I wouldn't even know where to start to refute that... I guess googling for bitrates of common HD video formats, and looking at CPU benchmarks doing some video encoding will be a good start in getting a little more informed on this topic.

      --
      Never underestimate the bandwidth of a 747 filled with CD-ROMs.
    22. Re:GeForce 6800 GT by Pulzar · · Score: 2, Informative

      Because modern video cards have more and more support for hardware encoding and decoding of video. While the support for encoding is only starting to show up, the hardware decoding makes a big difference in previewing HD video in real time with little CPU usage.

      --
      Never underestimate the bandwidth of a 747 filled with CD-ROMs.
  14. No strings attached? by sleeponthemic · · Score: 1

    Sounds like Head In The Cloud Computing (TM)

    --
    I record my sleeptalking
  15. Eek. Potentially energy inefficient. by RyanFenton · · Score: 3, Informative

    Power supply units only supply so much energy, and before then cause interesting system instability.

    Also, given the increasingly growing cost of energy, it might be worth buying a newer generation card just for the sake of saving the energy that would be used by multiple older generations of graphics cards. Not the newer cards use less energy in general - but multiple older cards being used to approximate a newer card would use more energy.

    I guess power supplies are still the underlying limit.

    As an additional aside, I'm still kind of surprised that there hasn't been any lego-style system component designs. Need more power supply? Add another lego that has a power input. Need another graphics card? Add another GPU lego. I imagine the same challenges that went into making this hydra GPU thing would be faced in making a generalist system layout like that.

    Ryan Fenton

  16. Two Links, One Article? by Anonymous Coward · · Score: 2, Insightful

    Why does the summary include two links to the same article? If there are two links, shouldn't there be two articles?

    And why does the summary link the phrase "allow vastly different GPUs to work in tandem?" Not only isn't it a quote from the article, it actually contradicts the article. The article says "To accompany this ability to intelligently divide up the graphics workload, Lucid is offering up scaling between GPUs of any KIND within a brand (only ATI with ATI, NVIDIA with NVIDIA)." How did anyone get "vastly different GPUs" from this?

    1. Re:Two Links, One Article? by Michael+Hunt · · Score: 3, Informative

      > How did anyone get "vastly different GPUs" from this?

      Presumably because (for e.g.) a G70-based 7800 and a G92-based 8800GT are vastly different GPUs.

      G70, for example, had two sets of fixed-purpose pipeline units (one of which ran your vertex programs, and one of which ran your fragment programs,) a bunch of fixed-function logic, some rasterisation logic, etc.

      On the other hand, G80 and above have general purpose 'shader processors' any of which can run any pipeline programs (and, afaik, runs the traditional graphics fixed-function pipeline in software on said SPs), and a minimal amount of glue to hang it together.

      About the only thing that current-generation GPUs and previous-generation GPUs have in common is the logo on the box (this applies equally to AMD parts, although the X19xx AMD cards, i'm told, are more similar to a G80-style architecture than a G70-style architecture, which is how the F@H folks managed to get it running on the X19xx before G80 was released.)

  17. No strings. by jellomizer · · Score: 4, Funny

    But it looks like it will need plenty of threads to work though.

    --
    If something is so important that you feel the need to post it on the internet... It probably isn't that important.
  18. Re:Eek. Potentially energy inefficient. by Anonymous Coward · · Score: 0

    I remember seeing something similar to what you're describing in terms of a power supply which fit in a front panel slot and was designed to add extra power for something like a new graphics card your old power supply couldn't handle, without having to replace the entire psu. At the time, though, it was more effective/efficient for me to just replace the old psu, and it did look like it could be cumbersome having the adjunct psu in a front panel slot from the standpoint of cabling.

  19. Q: OK, what would that imply? by smittyoneeach · · Score: 3, Funny

    A: Satriani is a messenger from God.

    --
    Get thee glass eyes, and, like a scurvy politician, seem to see things thou dost not.--King Lear
  20. Cross Platform? by kcbanner · · Score: 1

    Well, is it?

    --
    Obligatory blog plug: http://www.caseybanner.ca/
    1. Re:Cross Platform? by Narishma · · Score: 1

      Of course. It will work on both Windows XP and Windows Vista.

      --
      Mada mada dane.
    2. Re:Cross Platform? by kcbanner · · Score: 1

      *vomit*

      --
      Obligatory blog plug: http://www.caseybanner.ca/
  21. Re:Eek. Potentially energy inefficient. by compro01 · · Score: 1

    That's why there are bigger power supplies. I can find 1200W ones without any trouble, or even a 2000W one at a major online store, though that one would be tricky to fit into most cases as it's double-high, not to mention the thing will run you $650.

    --
    upon the advice of my lawyer, i have no sig at this time
  22. Save your pennies now. It will take a new mobo. by Catalina588 · · Score: 1
    This product will appeal to hard-core gamers who can afford a new motherboard when the product comes to market next year. It only makes economic sense to harness a couple of recent graphics cards: a new mobo costs more than a decent midrange graphics card. So, if you have say a last generation 8800 GTX and you want to add a 260GT, the Lucid solution would work.

    I saw the product tonight at Intel Developer Forum. Looks like it actually works, and the execs in the booth said production silicon arrived yesterday.

  23. Re:I WOULD LIKE TO SAY THANKS TO A SLASHOLE by mr_mischief · · Score: 0, Offtopic

    Watch the forecasts. Tropical storms they're talking about potentially becoming hurricanes tend to dump a bunch of rain.

  24. With Tubes of course! by itsybitsy · · Score: 1

    The chips are connected with Intra-Tubules which are micro versions of The Tubes that connect up the The Internets.

  25. meh... by Anonymous Coward · · Score: 0

    So I will be able to hook up 3 old graphics cards that each require 30 amps on the 12v rail and heavy cooling under load, and get the same performance as one newer card? I don't see a mainstream use for this.

  26. Money inefficient.too? by Lonewolf666 · · Score: 1

    While TFA does not give any prices, the Hydra chip and a mainboard with multiple PCIe x 16 slots (that is the high bandwidth variety you want for graphics cards) cost extra money too.

    As an example, the Asus M3A32-MVP Deluxe (4 PCIe x 16 slots) costs 144 Euros at my preferred online store, while cheaper ASUS boards with only one PCIe x 16 slot costs 60-70 Euros. Add the Hydra chip, and I guess you'll end up with a price difference over 100 Euros. Which will pay for a midrange modern graphics card that equals several old ones in performance.

    --
    C - the footgun of programming languages
  27. Impossible by GNUPublicLicense · · Score: 1

    If you look at the open source drivers for GPUs, those are full of bugs, that means that this chip will have to deal with the bugs of ALL GPUs... Bare non-sense.

  28. Re:Eek. Potentially energy inefficient. by Zygfryd · · Score: 1

    I want to take the opportunity to rant about the newest graphics cards, since that's slightly relevant to your post.

    It's been two years since I upgraded my rig and the GF 7600GS could use a replacement. Except I can't find anything that would be reasonably more powerful and not output heat like an oven. GF 9600/9800 and Radeon 3850/4850 all have 70W+ TDPs and either come with noisy fans or really huge heat sinks.

  29. 6800 GT by DiniZuli · · Score: 1

    That means the aging GeForce 6800 GT card in your closet might be useful once again
    I've still got a 6600 GT in my machine you insensitive clod !

    1. Re:6800 GT by The+Last+Gunslinger · · Score: 1

      Hah! I opened the commentary for the very same reason...my gaming rig has a 6800GT driving the screen!

  30. Is poster child tiem now? by argent · · Score: 1

    The last thing I want is closed source shit infesting my linux install. [rant rant rant]

    INVIZIBL MARKETSHAER! LOL!

  31. Re:I WOULD LIKE TO SAY THANKS TO A SLASHOLE by EmperorKagato · · Score: 1

    You must be new to Florida. They always have more rain in late Summer and less rain in the Fall and Winter.

    The weather stays fair and warm in October and November and the air fare and hotel rates are low until after Thanksgiving day.

    --
    ----- You know you have ego issues when you register a domain in your name.
  32. Re:Eek. Potentially energy inefficient. by Anonymous Coward · · Score: 1, Interesting

    I'm still kind of surprised that there hasn't been any lego-style system component designs
    are you serious? PCI/PCIe/SATA/eSATA/ISA/VESA I can name hundreds of standards that do just what you say. There are dozens of them out there for the interconnects and power.

    The reason there are so many different ones out there is really 2 things. Not invented here, and can not expand the port anymore without burning out older equipment if you plug one in.

    For example with PCI there was no reason to change the shape of the connector when they went to PCIe. Yet they did. It was mostly so if you plugged a PCI card into a PCIe slot it wouldnt melt your card and your MB. Could they have designed around that? Probably. But just from a simple it doesnt fit makes a lot of problems 'go away'. You also do not have to drag along legacy issues.

    Once you fix yourself into a 'lego' style you buy yourself some short term flexibility at a long term design cost. They even tried this with the ISA slot. They kept making it longer and longer adding in more and more pins. You could take a 8 bit card from the mid 80s and plug it into a mid 90s MB and it would work if you had drivers. The problem was the connector got HUGE. More pins = more money. Sure its an extra 8 bucks but say your making 10k of the things... The flexibility ended up being a kludge ontop of a kludge.

    Dont think so? Go look at a MB from the mid 90s. Look for a VESA/ISA mb. 16 bit ISA slot and then a 32bit VESA slot just after it. I sacrificed many knuckles on that bad boy design. They were painful to put in and take out. Snapped a few in my day just because they would get stuck.
    http://en.wikipedia.org/wiki/VESA_Local_Bus
    http://en.wikipedia.org/wiki/Image:Vlb.jpg
    http://en.wikipedia.org/wiki/Image:Vlb_svga.jpg

    Lego designs sound good at first. At first they are! Then you want to add something that doesnt fit anymore. That is when the kludges start rolling in.

  33. Picture quality? by Intocabile · · Score: 1

    I think picture quality would vary substantially over the combined image because of the differences in anti-aliasing and texture filtering algorithms used over the years. Newer cards have the ability to make custom anti-aliasing filters, but I still think that differences in texture filtering could be a problem.

  34. Nonsense by scorp1us · · Score: 1

    That means the aging GeForce 6800 GT card in your closet might be useful once again and the future of one motherboard supporting both AMD and NVIDIA multi-GPU configurations could be very near.

    This statement shows a lack of understanding of how video card hardware works. You could never combine the different platforms to render a single image. You'd be able to tell that there were two separate rendering implementations. Think back long ago, to the days when quake 3 was just coming out... ATI had a very lousy fog implementation. NVIDIA had a reasonable one. Now imagine that you're flipping the fog implementation between cards. One frame it might be ATI style the next, NVIDIA. Or even worse, two different implementations in the same frame!

    This is also why you can't render 3D movies (like from 3DSMax) using hardware acceleration. Every pixel of every frame must be from the same algorithm. 3DSM does that in its own software.

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    Slashdot's rate-of-post filter: Preventing you from posting too many great ideas at once.
  35. Use for GPGPUs? by zolaar · · Score: 1

    While the graphical rendering capabilities of an unmatched pair of older vidcards is limited (compared to newer cards), they might be more useful by games that take advantage of General-Purpose computing on Graphics Processing Units (http://en.wikipedia.org/wiki/GPGPU) for its non-graphical systems.

    Perhaps these could be makeshift physics accelerators? Or used for better 3D environment-sensitive sound?

    Having a spare parallel processor around would be mighty handy...

    --
    One man's constant is another man's variable.