Intel Demos Core 2 Extreme QX9650 Quad-Core At IDF

MojoKid writes "Intel demonstrated a dual socket gaming rig at IDF this week, based on their Skulltrail platform with the X38 chipset. The interesting thing about this machine wasn't just that it had 45nm quad-core CPUs in its sockets, as well as PCI Express 2.0 capable slots, but also that it was running a pair of NVIDIA graphics cards in SLI. That's right, SLI on an Intel chipset. No word whether or not X38 would officially be supported with SLI just yet. In fact, NVIDIA representatives noted Intel was buying NVIDIA nForce 100 SLI Southbridges just for this one Intel motherboard model."

Comments

SSE4 is overrated

[Silverlancer]

The SSE4 ESA SAD instruction (for an exhaustive SAD motion search) has been touted constantly as the "new big thing" with DivX benchmarks showing 100% speed improvements, etc, etc. This is generally bullshit. The DivX encoder was specifically modified so as to use the exhaustive motion search in its normal encoding, basically contriving the test to work faster with SSE4. Talk to anyone working on an encoder and they'll tell you the same--not only is an exhaustive motion search generally useful, but there are equivalent algorithms, such as successive elimination (SEA) that are actually faster implemented in software than SSE4 is implemented in hardware with mathematically equivalent results. The main developer of x264, for example, has stated that SSE4 offers basically no useful instructions whatsoever.

The chip as a whole, on the other hand, is quite awesome, but I think its important to correct this bit of common misinformation.

Re:SSE4 is overrated

[samkass]

I assume you're complaining about Intel documents such as this one that show a 1.6x to 3.8x speedup for certain HDTV encoding operations. There are still some likely reasons someone might pick SAD for encoding. One reason might be patent coverage-- the better the algorithm, the more likely it is to be patented these days. Providing a baseline fast algorithm that's part of all future Intel hardware and can be used without patent problems might be nice. Also, just because something can be done "faster in software" doesn't mean it's really faster. If it doesn't use the SIMD pipeline, it's occupying more of the int or fp pipelines and thus may have fewer potential parallelism opportunities and/or stall the pipeline more often. With SAD offloaded onto the SIMD pipeline one could do other things with the other pipelines-- perhaps even a combination of both algorithms running in parallel (assuming sufficient instruction dispatch speed) to get even more speedup.

I think there's a lot of as-yet unrealized potential here, and it will be interesting to see where it leads. It won't be the end-all be-all of encoding, but it will be another arrow in the quiver.

Super duper deca-core X8789FDS extreme

[Daimanta]

Seriously, what is it with these names?

Re:Super duper deca-core X8789FDS extreme

[Foerstner]

Oh, for the sensible names of my youth, like 80486DX-2.

Fans

[SpeedyDX]

I've got a rig at home with four case fans. How many does THAT monster have? Six visible on the side + bottom, up to two more infront of the hard drives, and up to two more right at the back. On top of that, you have up to two on the power supply and the two CPU fans AND the two on the video cards. That's SIXTEEN FANS in one rig!! Jesus, the fans on that thing probably have more combined horsepower than a souped up Civic! And it probably SOUNDS like one too!

That's not surprising

[Sycraft-fu]

I'm sure ATi is not high on Intel's list of people to be nice to now that AMD owns them. Whatever reason they had for choosing crossfire in the first place has now been reassessed I'm sure. Intel isn't going to do anything stupid like prevent ATi card from running on their boards, but neither are they likely to go out of their way to support anything ATi specific anymore.

when i was a kid...

[kesuki]

we thought 640k was enough to run games in and 16 colors was good enough for anyone! now we have to have 2-4 graphic cards, and 8 processing cores??? and probabbly 8 gigs of ram!!! dosent anyone think of how many watts these gaming rigs use anymore? i mean wow... pulling 49 amps over the 12 v rail... you might as well sell them with a dc generator and solid copper power rails.

seriously add in liquid cooling and cold cathodes and a 52" HDTV and youre talking over 3 killowatts of power draw... Im glad i play blizzard games, not only to people play them for a decade after theyre made, the initial launches try to have a configuration setting that will lower the bar and let less impressive systems play too.

sure their engines might not be so impressive that youd need quad 100 pixel pipeline cards... that themselves have 2 GB of ram on them.. or a system with 4x processors with 8 gb or ram... but i think the gaming industry has gone too far ever since they realized there was a market for $600 gaming cards..

Poster and commenter misconceptions...

[Glasswire]

Poster said: Intel demonstrated a dual socket gaming rig at IDF this week, based on their Skulltrail platform with the X38 chipset.
Skultrail is a dual socket chipset (probably a Greencreek follow-on) -which means it CAN'T be a X38 which is a single socket chipset.
What was seen at IDF was TWO systems - one dual socket and one single.
Also... for those who think these won't come to market... The X38 is a planned commercial chipset and what everyone has been calling a V8 is basically a dual quad core DP workstation platform which has been available since last November. The Penryn gen version is just a newer version of the same thing.
Eight Intel cores in one box is old news, what's new is the perf on the Penryn 45nm parts.