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Today's Fastest Retail LCD

An anonymous reader writes "ViewSonic has recently released a very exciting product, a nineteen inch LCD display with a 3ms response time. This is the fastest LCD panel currently available to consumers, and it is clearly aimed at gamers and movie watchers. Dubbed the VX924, the display is part of ViewSonic's X series which tries to comnbine performance with style. The word on the street is that Samsung will have a 4ms display available this year, but this may be the only 3ms."

36 of 251 comments (clear)

  1. Is it 6 bit, or full 8 bit color? by Anonymous Coward · · Score: 5, Interesting

    Most of the super fast LCD's are 6-bit, which kind of sucks.

  2. An anonymous reader writes by dtfinch · · Score: 3, Insightful

    "Hey, check out this exciting new product!!!"

  3. Response Measurment by Bios_Hakr · · Score: 5, Insightful

    I seem to recall some controversy about how response is measured. Some numbers are reported as the time it takes to go from black to white and back to black. Some are reporting just from black to white or white to black. And some are reporting the time it takes to go from one gradient of gray to another gradient.

    Buyer beware.

    --
    I'd rather you do it wrong, than for me to have to do it at all.
    1. Re:Response Measurment by dsginter · · Score: 5, Insightful

      I seem to recall some controversy about how response is measured.

      There's really no need for the controversy when the stinking refresh rate is well above the pixel response time. Everyone is babbling about how they have great pixel response but then they go and run the monitor at 75Hz (=13ms). When I can run a 3ms monitor at 300Hz, then I will be impressed.

      --
      More
    2. Re:Response Measurment by dsginter · · Score: 5, Informative

      The refresh rate still applies to LCDs and any other display. Basically, instead of "refresh rate", think "frame rate". The best LCDs of today will only refresh at 60 to 75 times per second. For a monitor that runs at 75Hz, this means that the monitor can only display "75 frames per second".

      It is all marketing and people are eating it up.

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      More
    3. Re:Response Measurment by ploss · · Score: 5, Informative

      FTFA, the specs for this monitor are:

      LCD Panel: 19" color TFT Active Matrix SXGA LCD
      Contrast Ratio: 550:1 (typical)
      Viewing Angle: 160 horizontal, 160 vertical
      Response Time: 3ms gray-to-gray (avg.); 5ms white-black-white (typical)
      Brightness: 270 cd/m2 (typical)
      Native Resolution: 1280x1024
      Inputs: RGB analog, DVI-D
      Dimensions: 17.0" x 18.4" x 7.9" (with stand)
      Weight: 14.8lbs (6.7kg) (with stand)
      Warranty: Three-year limited warranty on LCD, parts and labor
      VESA: 100mm compliant

      --
      What are the odds that some idiot will name his mutex ether-rot-mutex!
    4. Re:Response Measurment by Anonymous Coward · · Score: 4, Informative

      Yes, they will. :)

      The refresh rate also dictates how quickly the graphics card is outputting pixels to the monitor. If you have your card set to a 75 Hz vertical refresh rate, it'll transmit the contents of the framebuffer every 1/75 of a second. Of course, video games can render at higher than 75 fps, but that's just to the framebuffer. You don't actually get more frames than that going down the wires to the monitor. You can only drive up to a certain point because there's only so much bandwidth there, and all current monitor connection standards require sending the full frame every time.

      What LCDs eliminate is flicker. Since LCDs don't use phosphors that fade between refreshes, the image is rock solid. CRTs used higher and higher refresh rates to minimize perceptible flicker.

    5. Re:Response Measurment by earnest+murderer · · Score: 5, Informative

      You missunderstand the relationship.

      With this new display the spec is intended to convey* that even under demanding circumstances a display driven at 75Hz the pixel will be the correct color at least 76 percent of the time. This would be a huge improvement over what is the current situation, which has the same flaws in your example...

      at 300Hz with an ideal black to white time of 3ms by the time your pixel arives at the correct value, the value of that pixel has changed (similar to modern panels in the 10-13ms range at 75Hz. That is, your theoretical display never displays the correct color before the color changes (assuming black to white). At 300Hz you would only see a medium gray color, and it's likely that at that fast a refresh rate on a perfect panel the flickering between the two would be fast enough to appear to be a medium gray anyway. If you could comprehend changes at that rate, you would see the same problems with colors "smearing" and "ghosting" that we have on modern panels.

      *It's all marketing lies. The truth is this is an improvement, but nowhere near as good as they are trying to convince you it is. I'm sure one of our favorite tech sites will have the real facts soon enough.

      --
      Platform advocacy is like choosing a favorite severely developmentally disabled child.
    6. Re:Response Measurment by pla · · Score: 4, Informative

      I thought the Refresh Rate (Hertz) didn't apply to LCDs because the pixel on a CRT has to be constantly refreshed, where as with a LCD its only refreshes when it needs to, needs to change that is.

      You have two different concepts here called the same thing.

      With a CRT, the "refresh rate" means, literally, the rate at which the electron beam can scan and "refresh" all the pixels in one full screen.

      The signal going into the display has its own rate, perhaps best described as the "pixel clock". If you divide the pixel clock by the resolution (plus the padding around it to allow the electron beam to move to the next line or do a vertical retrace), you get a different sort of refresh rate, also in terms of full screens per second.

      With a CRT, those two different "refresh rates" almost always match or have a 2:1 ratio (in the case of an interlaced signal). You can't really avoid that tight lock, since the video signal actually acts to directly tell the electron beam what to do "now".

      With an LCD, though, each pixel has a distinct value, which can update almost arbitrarily often (much faster than any video card can tell it to change, anyway). The response time of the pixel measures how long it takes to change the visiblestate of the pixel itself (think of that like a fluorescent light bulb... You can flip the light switch far faster than the light can turn on and off).


      So, what does this mean in relation to the GP post?

      What your video card thinks of as the "refresh rate" matters in that no individual pixel will update faster than that, whether or not they can. So, while a 3ms response time means you could change the state of a pixel 333 times per second, it will only actually change at the video card's refresh rate (rarely over 85Hz).



      But I am sure someone will correct me if I am wrong.

      Not so much wrong, as just (understandably) confusing a "rose" for a "rose".

    7. Re:Response Measurment by Mprx · · Score: 4, Insightful

      A lot of people say very small changes in lag don't make a difference, but I think they are confusing it with reaction time. It's true that you're not physically able to react to visual stimulus in less than about 150ms (reaction to sound is slightly faster, reaction to touch faster still), but we are certainly capable of detecting differences in response times at much finer granularity than that.

      This is something I have actually tested. I set up a white square on a black background, moveable using the arrow keys. It was shown on a CRT running at 60Hz, synced to vertical refresh so each frame was exactly 1/60s. I implemented an ABX test, with one of control methods A and B being lagged by 1 frame, and the other not lagged (chosen at random). X randomly matched either A or B, and I could switch between them at will so long as the square was not moving. I tested myself with 15 trials, with no feedback on score until all the trials were complete.

      It turned out to be exceedingly difficult to tell the difference, but it was possible. I successfully matched 12 of the 15 trials, and as guessing would produce 50% success we can use the binomial theorem to calculate the probability that I was just lucky.

      p = (15 nCr 12) * 0.5^12 * 0.5^3
      = 0.014

      A statistically significant (p>0.05) result, so it is overwhelmingly likely that 16.7ms change in latency is perceptible. It's subtle, but the "feel" is noticeably different. However, I think the oldness and softness of my keyboard made things much harder, and I'm certain I would not have been able to tell the difference after drinking even a small amount of alcohol. Room for further testing here!

  4. A little old by Raynach · · Score: 4, Informative
    This monitor has been out for at least a month. I know because I bought it about a month ago.

    However, besides that, it's a top-notch monitor that I haven't had any problems with.

    --
    - A
  5. Seriously by HolyCrapSCOsux · · Score: 4, Insightful

    I have a 19" LCD that I use everyday. Is it THAT noticeable if I have 7-10 ms instead of 3?

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    0xB315AA8D852DCD3F3DCA578FD2E0BF88
    1. Re:Seriously by Anonymous Coward · · Score: 3, Insightful

      If you're gaming on it, yea. Try playing a FPS and whipping your view around 180. LCDs with poor response time will make it seem like the world is constantly a split second behind where your head is. It makes lots of people sick, actually.

    2. Re:Seriously by pla · · Score: 5, Insightful

      I have a 19" LCD that I use everyday. Is it THAT noticeable if I have 7-10 ms instead of 3?

      No, with the condition that the stated time actually measures the real response time (ie, the worst case from any state to any other state). Humans cannot resolve different colors or brightnesses that change faster than roughly 15ms (most people don't even notice changes under 25-30ms, but for some reason, geeks as a group tend to notice flicker far more than the general population).

      As my main display, I currently use a 19in DVI panel with a "mere" 12ms response time (note that the "DVI" part of that makes a HUGE difference - Most of the artifacts people blame on poor response time actually come from doing an unnecessary D2A2D conversion). And it looks simply beautiful, even for action movies... No muddiness or ghosting whatsoever.

      That said, I don't think any manufacturers measure their response time as a worst-case. So currently, the only real test of how well it will look playing movies or games - Try one out. Go into Best Buy or CC or even Wallyworld, pick out a few models you like based on appearance, then go home and buy your favorite for half the price online.

    3. Re:Seriously by tom8658 · · Score: 3, Insightful

      Not unless you either:

      • Have really good eyes
      • Play alot of graphic intensive games with alot of frames per second (the 180 degree spin trick mentioned above is the easiest way to see if this is a problem)
      • Watch alot of high quality video

      I'm sure theres an application I'm leaving out, but in general, for office use, 25ms is fine as long as the contrast and colors are good. I game occasionally on a 12ms display, and I honestly don't notice the difference between it and a CRT. Except for the bad colors. Ghosting is only an issue where there are alot of frames per second (i.e. FPS > refresh rate in hz). It makes sense intuitively, if you're getting 75fps on a 75hz display, you're getting one frame per cycle. Ghosting would occur if the response time is not high enough to switch the colours of the pixels in less than one cycle. In the case of this theoretical display, the response time must be better than 13.333ms (1sec / 75hz * 1000ms/sec = 13.3333ms), because otherwise the colored pixels will "stick" for the next frame (so a 25ms display will ghost every other frame at 75fps and 75hz). As I said, this makes sense to me, but I could be totally wrong.

  6. Great but.... by graemecoates · · Score: 4, Interesting

    ...when will manufacturers manage to produce LCD screens with more accurate colour renditioning?

    If you're into digital photography in any kind of non-serious way and actually want to preview pictures the way they'll look when they print, then I believe that a CRT is still the best method of doing this.

    A shame really, as I'd save a load of deskspace with an LCD screen...

    .
    1. Re:Great but.... by Surt · · Score: 4, Insightful

      Unfortunately for you and me, that will be long after they finish fixing the response time issue, because there are a lot more gamers out there than digital photography buffs. Gaming should be fixed at 2ms response times, so they are getting close now. When every LCD maker is pumping out 2ms panels, then we can expect to see them start competing mainly on brightness, then color depth and finally color rendition.

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
  7. Not a true 3ms display... by zoobaby · · Score: 4, Informative

    Saw another article on this display. They drive the pixel hard, causing it to "ring," it really doesn't settle until ~8ms, iirc. The 3 ms is also gray to gray, the new standard that gives faster response times than the older black to white to black measurement.

  8. Pure Commercialism by xaosflux · · Score: 4, Insightful

    Nothing to see here, not even an A to FR!

    Could we at least get a coupon?

  9. LCD ms numbers are a lie by AEton · · Score: 5, Informative

    I learned from this old Slashdot comment that LCD timings are highly misleading. The '3ms' number means something quite different from what you think it means. In short, see this article, or this forum topic. I've reposted the contents of the latter below.
    -------
    "Quoted response times by manufacturers are largely meaningless and misleading. .....because it measures the time it takes for full white to black or full black to white pixel transitions. So unless you have your monitor set to maximum brightness & contrast (so that the picture is so bright it burns your eyeballs out) and only use your monitor for flipping blank screens from white to black, and back again, whether the monitor has a 8ms response time or 100ms response time, it doesn't mean an awful lot.

    It's the same reason why monitors based on the 20ms Hydis panel outperform the 12ms Samsung panel, the 16ms AU Optronics panel, the 16ms LG/Phillips panel.......

    In real world use, the vast majority of monitors (over 95% of them) don't perform anywhere near the quoted response times. That's why you see streaking on the 12ms Samsung panel - its performing at 25-30ms.

    Let me try and explain further.

    Look at the response times for the so called 'fast' Samsung 172X which is based on a '12ms' panel:-

    http://www.xbitlabs.com/images/other/samsung-2/gr2 -2.gif

    Since most people have their monitors set to medium brightness (about 80-180 on the grey level scale on the graph) and many applications - particularly games use grey to grey pixel transitions (or one colour to another colour) - the typical response time is somewhere between 25-30ms. Not quite 12ms is it?

    Now look at the same response time graph for the Acer AL1721 - a mid level TFT with claimed 16ms response time:-

    http://www.xbitlabs.com/images/other/response-6/a2 1-grey.gif

    The graph is much flatter, so across brightness and contrast levels, you're going to get consistent response times. At most common user settings, the "slower" 16ms is actually faster than the "quicker" 12ms panel.

    Not quite as straightforward as the manufacturers would like you to think. The problem is, by that time, most people have parted with their money. When I was first looking to buy a TFT monitor, I thought that Kustom PCs were a bit mad to stock the Acer monitors in preference to others. However, it's only on further examination that you discover they perform very very well in games - for example, the AL1731M is based on the Hydis panel - and will in fact, outperform the so called 'faster' TFT panels.

    From Toms Hardware Guide:-

    "For games, the Hydis 20ms panel is still the one to beat. It's not yet perfect, but we know of no other that is faster (based on our tests, of course, and not manufacturers' specifications). Once again, we must insist strongly that the manufacturers' specifications are not to be trusted. "
    http://graphics.tomshardware.com/display/20040326/ lcd-08.html

    "The response times suppliers associate with their panels vary, anywhere from 16 ms to 25 ms. The only problem is that these figures mean nothing. Or at least, not a lot. An article published in 2001 that can be viewed at Xtremtech explains the situation pretty well, and we have summarized it for you in the section entitled "RT between colors". But this isn't the only problem..."
    http://graphics.tomshardware.com/display/20031105

    --
    We recently had heard in the office over one of the Yellow Machine that's made by Anthology Solutions.
    1. Re:LCD ms numbers are a lie by pe1chl · · Score: 3, Interesting

      Also, remember that a fast response time does not mean you will see smooth moving images.

      There will still be smearing because the LCD has a sample-and-hold characteristic and shows each image the full time between refreshes.

      To solve this, a strobing backlight that flashes shortly during each frame is required.

  10. 6-bit or 8-bit? by Anonymous Coward · · Score: 3, Insightful

    From LCD monitors I've looked at, the color of the 6-bit LCDs is not as good as the 8-bit LCDs. Some LCD monitor makers recently switched to 6-bit in order to get lower response times. There was nothing in the review about this. Shabby work.

  11. it's a tradeoff by igotmybfg · · Score: 4, Informative

    This monitor only supports 6 bpp, unlike your CRT and other LCDs that use the full 8. This means that the monitor cannot display 16.7m colors at one time. If you open up Photoshop or some other app that can display color gradients, you'll notice banding of the colors.

    1. Re:it's a tradeoff by Chairboy · · Score: 4, Insightful

      No, I counted them, they're all there.

      -- pause for laughter --

      BTW, the square root of 16,777,217 is 4,096. What does that tell you about screen resolutions needed to see all 16m colors at once?

      Best regards,

      7th grade math.

    2. Re:it's a tradeoff by tonywong · · Score: 3, Insightful

      Um, screen resolution has nothing to do with it. It's about the display's ability to show what colour the video controller has input to the display.

      Let me change the 6-bit display to a 4-bit example:
      If you have a display that is only capable of 4 bits (per channel) then each pixel can only show one of 2^4 available shades, or 16 shade (or Red, Green and Blue) = 4096 colour display. Even if it was a 4096 x 4096 sized screen, yielding 16.78 million pixels, each pixel could only display one of the 4096 colours. The issue here is that the display cannot choose 16 shades arbitrarily, they are in a fixed gradation from the factory.

      This is why banding or dithering will still occur on images on a 6-bit display, as each colour can only be represented by 2^6=64 shades (262k colours), and (most) human eyes can perceive 256 shades, or 2^8, equivalent to an 8-bit display (combinations of RGB being 24.7 million colours, or 24-bit colour).

  12. I got you beat by OblongPlatypus · · Score: 4, Informative

    I bought it more than two months ago. This just isn't news at all.

    Especially when the same company announced a 2ms-display just a couple of days ago.

    --
    -- If no truths are spoken then no lies can hide --
  13. Product Announcements Section by grondak · · Score: 5, Insightful

    All the best product announcements come out on /. Man, if I want to know about a nerdly phone or an LCD monitor that /matters,/ I'm going to be sure to click through to the cool product announcements.

    Can we please create a Product Announcements Section and let me turn it off?

    That would be the nerdliest way to deal with this stuff: organize it right out of my existance.

    --
    [Error 407: No signature found]
  14. Color depth? by eagl · · Score: 5, Insightful

    What's the color depth? 6 or 8 bit? I don't care how fast an LCD is... If it shows even a HINT of color banding then it's worthless to me, worse than the crappy used packard bell 15" monitor I have hanging off of my server.

    Unfortunately, not many manufacturers are listing color depth in the specs, focusing instead on non-standard claims of response time. There ought to be at least 4 standard measurements - overall brightness, color depth, resolution, and black-white-black response time. Instead, we get resolution, *maybe* a claim of supporting x million colors which could mean anything since they all interpolate to improve image quality anyhow, and a bogus response time number.

    The worst part is that so-called enthusiast and gamer hardware review sites let them get away with this. If the color depth isn't printed on the box, the review sites don't even bother to get and report the number. So they're comparing 6 and 8 bit LCDs against each other and not reporting an important difference between the two, or giving great review ratings on monitors without bothering to mention that the monitor only supports a 6 bit color depth so you're guaranteed to get color banding in many situations.

    Ok, we admit it... They're ALL fast now. So how about some info on actual image quality?

  15. Fudged Response times. by wgaryhas · · Score: 4, Informative

    According to the product info on Newegg, the 3ms response time is grey to grey. It has a 6ms response time for white to black to white.

    --
    "For every complex problem, there is a solution that is simple, neat, and wrong." - H.L. Mencken
  16. Re:Another review site... by Rectal+Prolapse · · Score: 3, Informative
    More recent reviews from behardware.com can be found here:

    http://www.behardware.com/articles/588-1/lcd-19-be linea-10-19-20-and-benq-fp91v.html

    I like the new LCD tests they use - and with screenshots illustrating the pixel responses! Very nice.

  17. It's not a matter of seeing them all at once by Sycraft-fu · · Score: 4, Informative

    It's a matter of seeing them at all. The problem with lower colour depths is that you miss midtones. You still have to go from the darkest to the brightest, there's just less steps to do it in, so you get less precise colour.

    I mean sure, in theory, you need only 786k colours to have a different colour for every pixel on a 1024x768 display. That means that 20-bit would be more than enough. However what you'd have to do is have that as a palette, a lookup table, that continously changed as the old 8-bit VGA stuff did. In reality, it's terribly impractical.

    For monitors it doesn't work at all, when you are talking about the bit size it's the number of levels per colour channel it can display and it's fixed. So with 6 bits per channel that 64 different levels which produces some nasty banding.

    In fact, 24-bit (8-bits per channel) really isn't enough actually. 16 million colours sounds like a lot and is, but you discover that humans and percieve more than 256 shades of gray. If you draw a gray gradient in 24-bit mode on a good monitor, you will be able to see some banding. You need more like 30-bit, that's 10 per channel or 1024 grays, before it becomes totally seemless.

  18. fast LCDs by digidave · · Score: 3, Funny

    "Today's Fastest Retail LCD"

    I tried to buy one last night, but I couldn't catch it!

    --
    The global economy is a great thing until you feel it locally.
  19. Black to black, rumored white to white also by Overzeetop · · Score: 4, Funny

    Actually, they've measured black to black as fast as 0ms in the lab, but convinced that marketing folks that nobody would believe that they could achive those numbers. Next year, they're going to release the same panels at 2ms, with 1ms in 2Q2007, then again with a 250ns spec in 2H2008. By quoting a higher-than-actual response they hope to reduce user complaints of spec-fixing, as well as provide a path to better the specs each year without any additional research expenditures.

    Rumor has it they have also tested the panel at 0ms white to white, but they're not releasing any data on "lit" pixel response until the 3Q2006 panels are ready to go into the distribution chain.

    --
    Is it just my observation, or are there way too many stupid people in the world?
  20. Limited Adjustment by ScottAuth · · Score: 4, Informative

    I own this monitor and it's actually very nice. I needed more desk space and my old ViewSonic 17" CRT was killing that. For gaming reasons, I opted for this monitor. I've played a bit of Counter Strike: Source, but mostly Battlefield 2 and it's performance is quite exceptional. I really do not notice any "ghosting." My only complaint w/ the monitor is that you cannot adjust its height. You can tilt it back and forth, minimally at that. This is pretty annoying as it sits relatively high on its bevel. I'm used to it now, but the first few weeks really cramped my neck.

  21. something new to lie about by Anonymous Coward · · Score: 5, Insightful

    In the days of CRT monitors the only thing that mattered was the size ... and so manufacturers lied about it, and eventually there were lawsuits, and now we have the crazy "19 inch (17.5 inch viewable)" way to describe how big the screen is on a CRT. Thankfully this didn't infect LCD advertizing copy-writers, so when they say "19 inch", it really is that big.

    But they have to fudge something. There's no storage in a monitor, so they can't fall back on the old and trusted "100 GB" which is based on 10^9 bytes in a gigabyte, and is the pre-formatted size. Only a few LCD monitors have built-in speakers, so usually they don't have the option to use TMPO watts @ 1KHz rather than RMS across 20Hz-20Khz. So being creative types, they've found that "contrast ratio", and "response time" aren't specified very well, giving plenty of room to put impressive numbers in big type next to the picture in the ad.

  22. So what am I missing? by ikejam · · Score: 3, Informative

    http://www.engadget.com/entry/1234000483064834/ [Viewsonic announces 2ms 19" lcd.]