AOC I2757Fh And ViewSonic VX2770Smh: Two 27" IPS Monitors

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With monitor prices creeping lower than ever, even the latest IPS-based models are now affordable. Today, we look at a pair of 27-inch, LED-lit, 1080p displays from AOC and ViewSonic. Both products recently hit the market and are selling for around $300.

Results: Stock Brightness And Contrast

Maximum Stock Settings

Below are the peak light output measurements with brightness turned up all the way. The contrast must be left at its default setting or below, as upping it even one click kills detail in the brightest parts of the image.

Both AH-IPS-based products come up short in maximum white luminance versus more expensive models using older IPS technology.

While the maximum brightness of these monitors is a bit below that of pricier IPS panels, these extremely low black levels more than make up the difference.

ViewSonic comes out on top with a default on/off contrast ratio of 1031.8:1. You’ll notice that we’re now measuring luminance to four decimal places, which makes contrast ratio calculations far more precise.

Both monitors perform very well using stock settings, coming close to their claimed brightness of 250 nits while displaying excellent grayscale and gamma accuracy.

Minimum Stock Setting

Here's what you can expect at the minimum brightness setting. If you work in a dark environment, you can lower the brightness all the way and still have a decent image that's easy on the eyes over long viewing periods.

While these numbers may seem extremely low, they're still well above SMPTE standards for images shown in a completely darkened room. That might seem a little too dim for gaming or productivity, but it'd be pretty typical for watching a movie.

Turning down the brightness control takes the ViewSonic to a supremely low black level of .0633 cd/m2, which is excellent performance for an IPS display.

Of course, contrast ratio suffers at these low brightness settings because the peak output is much lower than 200 nits. Still, all video levels from 0 to 255 are visible at this setting.


Believe it or not, this is still respectable performance. While we don't recommend dropping the brightness all the way, those of you with sensitive eyes certainly could and still see a pretty good image. ViewSonic maintains a decent contrast ratio thanks to the VX2770Smh's low black level.

Christian Eberle
Christian Eberle
Contributing Editor

Christian Eberle is a Contributing Editor for Tom's Hardware US. He's a veteran reviewer of A/V equipment, specializing in monitors. Christian began his obsession with tech when he built his first PC in 1991, a 286 running DOS 3.0 at a blazing 12MHz. In 2006, he undertook training from the Imaging Science Foundation in video calibration and testing and thus started a passion for precise imaging that persists to this day. He is also a professional musician with a degree from the New England Conservatory as a classical bassoonist which he used to good effect as a performer with the West Point Army Band from 1987 to 2013. He enjoys watching movies and listening to high-end audio in his custom-built home theater and can be seen riding trails near his home on a race-ready ICE VTX recumbent trike. Christian enjoys the endless summer in Florida where he lives with his wife and Chihuahua and plays with orchestras around the state.

66 Comments Comment from the forums
  • 1920x1080?

    Next.
    Reply
  • kinggremlin
    Unless you're legally blind, why would anyone want a 27" 1920x1080 monitor? I still don't get why one industry thinks we need 1920x1080 on a 5" cell phone, while another thinks 1920x1080 is all the resolution you'll ever need no matter how big your screen.
    Reply
  • Nintendo Maniac 64
    In other news, Micro Center and Monoprice have 27" monitors @ 2560x1440 for just under $400, both of which are based off the inexpensive 27" Korean monitors but come with a US warranty:

    Micro Center - AURIA EQ276W 27" IPS LED Monitor @ $399.99Monoprice - 27" IPS LED CrystalPro Monitor WQHD @ $390.60
    Surely that's the comparison readers really want to see. Get on it Tom's!
    Reply
  • I bought myself Achieva Shimian QH270-Lite on ebay and it is a 2560x1440 monitor with 6ms response time. Its basically a rejected apple monitor with no frills and no warranty (sold in Korea for $200). I doubt monitor manufactures will release 2560x1440 monitors at mainstream prices within the end of this year, as Intel predicted. Or 4k monitors by 2015.

    Here are some links to sites dedicated to these 27" 2560x1440 monitors:

    http://www.overclock.net/t/1215866/reviewed-400-2560x1440-ips-no-ag-90hz-achieva-shimian-qh270-and-catleap-q270
    http://hardforum.com/showthread.php?s=555ec44784c7ce14633a870f574d2b48&t=1675393
    http://www.overclock.net/t/1228062/achieva-shimian-monitor-club

    If you you would like to know more how your graphics card, monitor perform on 1440P and above resolution with certain games, go to to this link:

    http://www.overclock.net/t/1291882/1440p-and-above-gaming-club-1440p/0_100
    Reply
  • grokem
    Thanks for the review. These do look like very good choices for those that don't need a gaming monitor. No offense to this review as I do think it serves a purpose and will be useful to many. However, I think I'm going to quit reading monitor reviews for a couple of years. Maybe by then my 15 year old monitor and my 10 year old ~$500 LCD will be surpassed by something new and better.
    Reply
  • Nintendo Maniac 64
    10448090 said:
    However, I think I'm going to quit reading monitor reviews for a couple of years. Maybe by then my 15 year old monitor and my 10 year old ~$500 LCD will be surpassed by something new and better.
    They already have been surpassed, but the tech is expensive currently:
    Sony PVM2541 25-inch Professional OLED Picture Monitor
    Reply
  • bavman
    Pass. 27'' is way to big for 1080p, needs 1440 at the minimum.

    Manufactures need to stop making 1080p monitors. With 4k around the corner, it should be at least 1440 or 1600 now. Were not gonna get anywhere until someone finally starts to really mass produce higher res monitors
    Reply
  • abbadon_34
    Remember when CRT's supported tons of resolutions and refresh rates, more than most could handle? Then trendiness and HDCP got in the way.
    Reply
  • zander1983
    Nintendo Maniac 64They already have been surpassed, but the tech is expensive currently:Sony PVM2541 25-inch Professional OLED Picture Monitor
    Still 1080p, pass.
    Reply
  • Nintendo Maniac 64
    10448091 said:
    They already have been surpassed, but the tech is expensive currently:
    Sony PVM2541 25-inch Professional OLED Picture Monitor
    10448095 said:
    Still 1080p, pass.

    It's a 24" monitor, what did you expect? (they market it at 25" but it's really 24 5/8")

    If they come out with a 27-30" monitor, surely it'd be 2560px wide since they are professional-level displays.
    Reply