Input Lag Testing

Processing and display lag is a very important thing for gamers, and it’s most often nebulously reported if at all. We’ve discussed this in previous display reviews, but what matters most is how the display acts in real world testing. I’ve been doing previous tests by comparing LCDs with first a 17” Princeton CRT, then a Sony G520 20” CRT. So far the results have been a bit interesting, with the CRTs edging a pretty consistent - if small - lead over LCDs. 

I measured the Dell U3011 the same way we've done it for a number of displays now, by snapping many photos of the same wings of fury 3DMark 2003 demo mirrored on the CRT and LCD. Average a ton of results from those images, and we get a feel for what input latency works out to. 

Processing Lag Comparison (By FPS)

I ran this test twice as well because the results somewhat surprised me - 23 ms is a pretty substantial amount of input lag. This was being driven over DVI-D from a NVIDIA GTX 470, as a reminder. I played a lot of games on the U3011 (well, as many as I could in-between smarphones, CES, and other work), and never noticed input feeling laggy or just plain off. Over HDMI I tested Halo Reach from an Xbox 360, on the PC lots of BFBC2 and DOD:S. It's a personal taste thing, honestly I still can't subjectively feel the input lag, even if it is there. 

Like i'm used to seeing, there's one frame of lag which shows up when taking photos of the U3011. The ZR30w lacks a scaler and OSD, and has around half the input lag. Maybe there's something to be said for HP's choice there. 

Brightness Uniformity Power Consumption and Final Thoughts
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  • Sabresiberian - Friday, January 14, 2011 - link

    Indeed! Thar's the thing I most want at this point; I hope manufacturers are reading your articles! Samsung? LG? Anyone listening?

    ;)
  • mapesdhs - Friday, January 14, 2011 - link


    Can this new Dell display accept a sync-on-green signal? How well does it handle lower
    resolution inputs such as 1920x1200 or 1600x1200?

    Such large displays don't seem to be quite there yet wrt quality and sensible pricing, so I
    went with a 24" HP LP2475W (HIPS version).

    Ian.
  • flblws - Friday, January 14, 2011 - link

    how much? $1300? and still has a VGA port? REALLY?

    AND

    and no 120HZ or 240HZ ?

    Really?

    yawn....
  • cjl - Saturday, January 15, 2011 - link

    No monitor with this res will have 120Hz (or higher) anytime soon - the bandwidth just isn't there over DVI, HDMI, or DisplayPort (though the latest DisplayPort might just about be good enough - I'm not completely positive). As for the VGA port, some people still have laptops with only a VGA output. Obviously, it isn't meant to be the primary input, but it is there as an option (among the enormous number of other inputs).
  • DanNeely - Saturday, January 15, 2011 - link

    VGA is there because it costs next to nothing to add, but you can forget running native resolution over it. I tried once by accident (my GPU decided to send analog video over a DVI-I cable) to my NEC 3090, and the result was a ghastly mess. My initial reaction was to wonder if my monitor was DOA.
  • AnnonymousCoward - Saturday, January 15, 2011 - link

    DP1.2 x4 has the bandwidth for 2560x1600, 30-bit, 120Hz. All techs have the bandwidth for 120Hz at lower res.
  • Soldier1969 - Saturday, January 15, 2011 - link

    Well you keep on yawning my poor friend ill keep playing with maximum eye candy at 1600p. I have a 55 inch LED Sony 240hertz for everything else and a second 120hertz 37inch Samsung panel next to my 30 incher for double duty. Meanwhile you keep playing on your puny panel. You need to get educated on the tech or just keep showing your ignorance. You get what you pay for. If you want to play at the best res there is for PCs then get one otherwise just keep playing with TN panel garbage that keeps being churned out for the poor folk that think its good as it gets.
  • Luay - Saturday, January 15, 2011 - link

    Everyone is comparing the HP to the Dell but has anyone heard of Hazro?

    I'm sure a little attention to this company and its products will encourage them to venture into other markets. review please!

    https://www.hazro.co.uk/shop.html#ecwid:category=4...
  • MeanBruce - Saturday, January 15, 2011 - link

    With do many tech groups claiming to be delivering exactly what their customers were asking for let's hope someone from Dell Monitor Design reads Anandtech or at least these many comments. Everyone seems to be in agreement on the lack of RBG LED and DisplayPort 1.4 for this flagship design. There is hope though, Dell is due to replace the U2410 this year with the U2412, and in the past has introduced it's latest developments on the 24in platform then later they appear on the 27 and 30. So let's hope the new 24inch Ultrasharp is everything we have come to expect from Dell panels, and hey throw in a remote to control all inputs and the OSD and volume on the Soundbar. For all that I would have no problem with a $699 or $799 pricetag, they already make three other 24inch monitors at very low price points. Give the rest of us what we want!
  • MeanBruce - Saturday, January 15, 2011 - link

    Even $899, if it's Drop Dead Gorgeous!

    Peace Brothers!

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