Like all new display technologies, Ultra HD commands a premium price. But users have found welcome relief in the 28-inch TN category. Asus was first to market with its PB287Q over two years ago. At the time, it sold for around $650 but that price has dropped to $450, thanks to time and competition. Every other major manufacturer has introduced products based on the same series of panel parts from Innolux. They are characterized by accurate color, reasonably fast panel response and most significantly, low cost.
The world of Ultra HD gaming lives in a rarified atmosphere. At this time even the fastest video cards can manage only 50-60fps at moderate detail levels in titles like Crysis 3 and Far Cry 4. And the genre is further hampered by a maximum refresh rate of 60Hz. Until newer interfaces like DisplayPort 1.3 are included at both ends of the signal chain, that limitation will remain.
But for users who want to push the envelope, there are a few choices available. We looked at Acer's XB280HK in July of last year. It was the first Ultra HD screen to include adaptive refresh in the form of Nvidia's G-Sync technology. While still limited to 60Hz, it represents a major step towards increased resolution for games.
Now that FreeSync is appearing in many new displays, it's only logical that its less-expensive architecture be used in creating a value-oriented hi-res gaming product. There may be a temporary imbalance between the cost of the monitor and the video card needed to drive it, but that is likely to change as hardware prices fall. The latest example here for review is AOC's U2879VF.
To the Innolux panel seen in every 28-inch TN monitor, AOC has added FreeSync and a couple of unexpected features. When we unpacked our sample, the first thing that fell out was a calibration data sheet, which is something one doesn't typically see with a gaming monitor. But two of our recent review displays also included them, ViewSonic's XG2700-4K and Acer's Predator X34.
AOC does tout the U2879VF's professional cred on its website and we're always happy to see a company put the effort into color accuracy. On initial assessment, this display looks promising. The panel has a 10-bit color depth courtesy of FRC. And it did report that fact to our AMD Catalyst driver, which allowed us to run 10-bit color with a Radeon R9 285.
The other surprise is a uniformity compensation mode. We've reported on this feature several times in the past, but only associated with dedicated professional displays. To see it here is unusual. You'll see in our tests that it is well-implemented with minimal impact on contrast.
The backlight is flicker-free so users sensitive to pulse-width modulation will have less eye fatigue to look forward to. Given the U2879VF's spec sheet, feature set and low price, we expect it will prove to be a compelling choice for those seeking an easy path to Ultra HD. Let's take a look.
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The monitor is for the present 4k at 60hz even the prices it's good for the spec.
The speed of hz and the resolution are two different things, of course you will get higher hz at lower resolution. In a near future it will be 4k with 120hz or 144hz, coz 4k will be standard for 5 years as 1080p and 1440 or qhd will just be a transitition as was 720p.
You need 2.5X minimum ratio for asynchronous mode (i.e. 30 Hz to 75Hz) or you have no support below 40Hz.
With the range being so low you are popping in and out of the smoother asynchronous mode any time you go above or below this. If it's setup for VSYNC ON you'll go from smooth gameplay to STUTTERING below 40FPS (or screen tear if setup for VSYNC OFF).
Same goes for above 60FPS (though I think you can force a Global cap but you have to experiment with that and it may have to be a bit below 60FPS).
*If you have a 30Hz to 144Hz it's far better. Not only is it hard to go over 144FPS, but for demanding games (or sudden drops even if good FPS) you CAN stay in asynchronous mode.
The REASON is that AMD has no module like GSYNC does. So if you drop to 29FPS then the drivers tell the GPU to send each frame 2X so the monitor gets 58FPS. You still see it as 29FPS but a SMOOTH 29FPS because you stay in asynchronous mode so the monitor draws each frame as it gets it.
There is a small DELAY in doing this so you can't get by with just 2X the range. So again, for the 40Hz to 60Hz range if you drop to 39FPS it doesn't work.
**IMO they shouldn't even sell Freesync monitors like this. If you don't understand what's going on you're going to have an inconsistent experience with many games being smoother then stutter or tear constantly.
Umm, ya? That's the underlying point of my entire post! To expand, I am not willing to spend money on a monitor that is "for now" ok, when I find the 1440 experience (on IPS panels) so good. Since I run 27 now, why go a minor increase for a 4K panel that won't look as good while gaming, i.e. low frame rates? And to get even more specific - I am team green so I wouldn't buy an FS monitor in the first place! :lol: