VP2770-LED Vs. S27B970D: 27" Monitors At 2560x1440

Results: Pixel Response And Input Lag

To perform these tests, we use a high-speed camera that shoots at 1,000 frames per second. Analyzing the video frame-by-frame allows us to observe the exact time it takes to go from a zero-percent signal to a 100% white field.

The pattern generator is placed at the base of the monitor so our camera can capture the precise moment its front-panel LED lights up, indicating that a video signal is being received by the monitor. With this camera placement, we can easily see how long it takes to fully display a pattern after pressing the button on the generator’s remote. This testing methodology allows for accurate and repeatable results when comparing panels.

ViewSonic wins the response time comparison by two milliseconds over the others. And although it still lags behind most TN-based monitors, it does show an improvement in IPS technology. Conversely, Samsung trails the pack in this metric. Now, let’s look at the signal lag measurement.

Keep in mind that this is measuring total lag, with the pixel response time factored in. Of course, your actual mileage will vary depending on the hardware and software configuration used. But because we’re using a pattern generator, we can eliminate these variables.

Samsung moves up in the ranking with its lower input lag time. The AOC screen we tested in AOC I2757Fh And ViewSonic VX2770Smh: Two 27" IPS Monitorsis still on top, but the two screens in this review are only slightly behind. When looking at results from the TN-based monitors we’ve tested, we see these latest IPS panels are inching closer in speed. Their response time is within two or three milliseconds, making that comparison a practical wash.

Input lag is generally greater on IPS-based displays, though not by much. Moreover, it's not simply universal that any given TN panel is faster than any given IPS panel. Ultimately, you need to have extremely fast reaction times to be held back by any of these monitors.

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  • Anonymous
    Why not do a review on those $330 Korean 1440P monitors that enthusiasts talk about? I like to see what i am missing with the extra $900. Really i'm serious i really want to know what justifies the 1 grand price tag.
    32
  • cangelini
    jupiter optimus maximusWhy not do a review on those $330 Korean 1440P monitors that enthusiasts talk about? I like to see what i am missing with the extra $900. Really i'm serious i really want to know what justifies the 1 grand price tag.

    It's coming. We're ramping up our display coverage, so we took note of the requests after the last display piece and put in the requests. You'll see this soon. Of course, if there are any other requests from you guys, do let us know. Christian is doing a phenomenal job of applying his extensive experience on Tom's Hardware.
    21
  • mayankleoboy1
    Quote:
    Why wouldn't you want a QHD screen like one of these two?
    Everything gets smaller.


    So increase the DPI scaling ?
    11
  • Other Comments
  • mayankleoboy1
    Quote:
    Why wouldn't you want a QHD screen like one of these two?
    Everything gets smaller.


    So increase the DPI scaling ?
    11
  • MauveCloud
    BigMack70I'm glad to see 1440p monitors getting some attention, but I just don't see the prices of these being justifiable to most users over the USA-based Korean 1440p IPS panels that are starting to become more numerous.$800-1200 is just nuts for anyone using these for home use or gaming, IMO.


    Agreed. I bought a Dell U2711 a few months ago, but if something forced me to replace it, I'd probably go with one of those cheap Korean panels -- or a TN panel 2560x1440 monitor if somebody would actually make one - I doubt I'm the only one who likes the resolution but isn't so picky about color quality. I had no objection to the color quality on my Samsung P2770HD, and the color shifts of a TN panel are affected by the physical size of the monitor, not the resolution, right?
    3
  • Anonymous
    Why not do a review on those $330 Korean 1440P monitors that enthusiasts talk about? I like to see what i am missing with the extra $900. Really i'm serious i really want to know what justifies the 1 grand price tag.
    32
  • cangelini
    jupiter optimus maximusWhy not do a review on those $330 Korean 1440P monitors that enthusiasts talk about? I like to see what i am missing with the extra $900. Really i'm serious i really want to know what justifies the 1 grand price tag.

    It's coming. We're ramping up our display coverage, so we took note of the requests after the last display piece and put in the requests. You'll see this soon. Of course, if there are any other requests from you guys, do let us know. Christian is doing a phenomenal job of applying his extensive experience on Tom's Hardware.
    21
  • EzioAs
    Dell's UltraSharp U2713HM is less than $600 in my country if we go by standard conversion. Would you guys say that's a good price?
    2
  • festerovic
    cangeliniIt's coming. We're ramping up our display coverage, so we took note of the requests after the last display piece and put in the requests. You'll see this soon. Of course, if there are any other requests from you guys, do let us know. Christian is doing a phenomenal job of applying his extensive experience on Tom's Hardware.

    That's great to hear, I agree with the others that the price of these models is too much to consider unless they were generating $$$s for me. $3-400 seems like the range I would be willing to spend on these. And as for the USA based korean cheap models, are there any legit retailers of these? Please point me at them.
    3
  • JOSHSKORN
    Just bought a ASUS VS278Q-P for $310. It's a 60Mz monitor and I do game, but I'm happy. My previous monitor lasted 8 years (Samsung SyncMaster 213T, bought it for $1k). I'll upgrade when this one dies, hopefully 4k/UHD will be affordable. Supposedly, only serious gamers can tell the difference between 60Hz and 120Hz. I'm not a serious gamer, so it works just fine for me. 120Hz monitors of that size are nearly twice the price.
    1
  • mannam
    Anonymous said:
    It's coming. We're ramping up our display coverage, so we took note of the requests after the last display piece and put in the requests. You'll see this soon. Of course, if there are any other requests from you guys, do let us know. Christian is doing a phenomenal job of applying his extensive experience on Tom's Hardware.


    Here are the inexpensive $300-$400 27" korean monitor brands: Yamakasi Catleap, Achieva Shimian, Crossover, PCBank, Potalion, Auria

    "The reason these monitors are cheap - LG makes IPS panels for apple cinema displays. Apple only accepts grade A+ panels. That means the all the grade A,A-,B+, etc are not accepted and returned to LG. LG resells those IPS panels to other manufacturers. You can get the whole story on google if you're interested. In addition, you're getting no support and no manufacturers warranty."

    Source: http://www.mmorpg.com/gamelist.cfm?game=239&view=forums&post=5192222#5192222

    It would be really interesting to get a review of these monitors that go for 50% or less of the price of the Big Brand stuff. If it's even 85-90% quality compared to the big brands, then they are worth the plunge. :D
    1
  • ubercake
    Personally, I was not impressed with the Auria monitor. My Acer HN274H TN monitor has better contrast. Viewing angles are far better on the Auria, but that's to be expected on an IPS. At any rate, I returned the Auria after a day of use because after many attempts to adjust the contrast/color, it didn't hold a candle to the colors or contrast on my TN. The Auria definitely had deeper black, but the in-betweens seemed to be missing no matter how I set the contrast and color. I honestly couldn't justify the tradeoff of higher resolution to lack of contrast. Maybe I got one of the LG B+ throw-away panels?
    1
  • sanilmahambre
    Don't want too much ? Think again!
    1
  • wanderer11
    cangeliniIt's coming. We're ramping up our display coverage, so we took note of the requests after the last display piece and put in the requests. You'll see this soon. Of course, if there are any other requests from you guys, do let us know. Christian is doing a phenomenal job of applying his extensive experience on Tom's Hardware.

    Don't forget the Auria at Microcenter. Many Toms users, myself included, have them.
    1
  • ZippyPeanut
    $856.00 and $1,200

    Both 60 HZ

    No need to read any further.
    1
  • warezme
    I'm waiting for this or higher resolution in a 24" size monitor that has very, very narrow or no bezel, true 5ms response time and refresh rate of 120hz. Perhaps I'll live long enough to see one but I'm starting to doubt.
    4
  • cknobman
    I refuse to spend more than $400 on a computer monitor no matter what resolution it is running at.

    I just dont see QHD picking up any traction in the main consumer market until they get prices down to reasonable levels.

    Heck I can pick up two 1080p 23/24 inch panels for
    2
  • mayankleoboy1
    Hey Toms, you interested in an experiment where you cut off the bezels on 3 1080p monitors, and stick them together for a seamless experience ?
    4
  • rush21hit
    I understand the reason why Windows 7 had Magnifier Tools just recently as I move on from 1366x768 to 1980x1200. And these things at even higher res, I don't think my focus is that good even with Magnifier Tool...

    Even with my recent resolution, I experienced some hard time to adjust myself when gaming is involved. The HUGE screen about 60 inch from my eyes still hurts my respond. I'm too focused on what happen on the middle of the screen and never had a chance to look at details on corners, when I do, it's already too late...

    I don't think I'm ready for such resolutions, even if someday my rig is.
    2
  • guzami77
    MauveCloudAgreed. I bought a Dell U2711 a few months ago, but if something forced me to replace it, I'd probably go with one of those cheap Korean panels -- or a TN panel 2560x1440 monitor if somebody would actually make one - I doubt I'm the only one who likes the resolution but isn't so picky about color quality. I had no objection to the color quality on my Samsung P2770HD, and the color shifts of a TN panel are affected by the physical size of the monitor, not the resolution, right?



    I have the Dell U2711 also. Im a very visually detailed person. Audio I cant tell the difference between low to mid, or mid to high end systems... but visually I notice. My friends and family dont notice visual details or color accuracy. They think my monitor was a waste of money, but I dont. You need to know yourself before making a purchase on these. Also, if your gaming, you'll need a beefy system.. the jump from 1080p requires more hardware than youd expect.
    1
  • biggestinsect
    I run a 3 monitor set-up; use it mostly for 3d modeling and CAD, and occasional gaming. 2048 by 1152 23" Samsung on the left; 32" Samsung TV in the middle and LG 23" IPS on the right.

    Want to replace this mess with 3 27" QHD IPS panels. VESA mounts are mandatory; minimal/no-bezel cases would be preferred. I don't see that combination of features available anywhere.

    Also at $700 - $1000 dollars apiece it would be impossible for me to get all three at the same time. I could swing the cash for three of the Korean panels but spending that kind of money on a scary warranty, quality gamble is a bit un-nerving.

    So I guess some comprehensive reviews of the lesser panels and comparisons to the name brand monitors would be extremely helpful for me at this point. I could have worse problems!
    4
  • Onus
    rush21hit...I don't think my focus is that good even with Magnifier Tool...Even with my recent resolution, I experienced some hard time to adjust myself when gaming is involved. The HUGE screen about 60 inch from my eyes still hurts my respond. I'm too focused on what happen on the middle of the screen and never had a chance to look at details on corners, when I do, it's already too late...

    This certainly applies to my 53-yr old eyes. I have two 1920x1080 monitors now, and I use the smaller one (21.5") on my primary PC because I am a little less likely to miss things than on the 23" one. Also, it isn't just the cost of the monitor; for games you're looking at $400-$600 price of graphics card(s) to go with it, plus a beefier PSU... I just can't justify it. I'm not knocking those who can, but I can't.
    I am happy with 1920x1080; I suspect my next monitor upgrade (unlikely to be soon) will be to get a 120Hz monitor for 3D, but not to get more real estate.
    3
  • xPandaPanda
    More correctly, it's WQHD (2560 x 1440)
    QHD is more generally 3840 x 2160, but in regards to being 4x 720p, it's acceptable. Just not too... correct.

    For example, 720p shouldn't be HD if 1080p is HD. Like... 720 should have been 720miniHD but for marketing use, it's HD because HD is always good. So QHD is more reasonably 4x 1080p.
    -1