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AOC U2879VF 28" FreeSync Owners Club

post #1 of 9
Thread Starter 
Noticed there isn't one for this monitor and hopefully I am not breaking the rules opening a club on my own. Did a search for start owners club and new owners club but didn't find anything.

I will include:
  • Photos
  • Specs
  • My first impressions
  • Some information on possible driver modification to improve freesync range


PHOTOS:



Specs
Panel size 28"
Screen Ratio 16:9
Response Time 1ms (claimed)
Recommended Resolution 3840x2160@60Hz (DP, HDMI 2.0) (will not do 60Hz at this resolution one HDMI 1.4)
Contrast Ratio 1000:1 (Typical) 80,000,000:1 (DCR) (claimed)
Brightness (Typical) 300 cd/m²
Display Colors 1.073G
Viewing Angle (H/V) 170/160
Input Connectors Analog , Dual link DVI,HDMI(MHL) & DP
Built-in Speakers N/A & Earphone Jack (no speakers but will output to powered speakers using HDMI or DP audio)
HDCP Compatible YES
Operating Mode (W) 41W
Standby Mode (W) <0.5W
Wall Mount N/A (is not VESA compatible)

My first impressions
Pros:
  • Price (mine was under $300 shipped from jet.com)
  • Latency (low latency compared to IPS)
  • Next Generation Panel (new TN panel is better than older TN panels for accuracy but still nowhere near IPS)
  • Has audio output to power speakers (makes it easy to use the audio capabilities of the newer AMD cards without buying a receiver, supports 24Bit 48KHz and has enough power for most large headphones. Is lacking a volume control but my keyboard has one.)
  • Jacks face straight out (makes it easier to plug things in, could be a con for others)
  • Looks good
  • Was easy to set up

Cons:
  • Contrast changes quickly when you lean back or adjust your seat (IPS does not have this issue, the problem is not as bad as my previous TN panel)
  • Uneven lighting (not terrible and difficult to see unless looking at a blank black screen, issue is less noticeable at lower brightness levels, issue may be AOCs fault and not necessarily this panel which is used in other monitors as well)
  • Names of features in the GUI do not necessarily make sense (latency setting is called overdrive, there is a feature called shadow control which may be back-light brightness not sure yet but it greatly affects the brightness, no tool tips to explain what the features do)
  • FreeSync Ratio is very tight 40-60 (there may be a way to modify the monitor driver to go as low as 33FPS more on this later)
  • FreeSync tears at 60FPS must set frame limiter to 59FPS
  • No VESA mount (comes with the price territory, there are affordable solutions to mount this to a vesa mount however)
  • Almost MUST run desktop scaling which causes the text to be not as perfect as it was on my 2560x1440 screen (May be other ways around this that I have not yet figured out)
  • Not sure what setting it is but I turned something on and it made videos look horrible, pixel crawl, and flashing or something... might have been the pixel overdrive. It was messed up... I thought my video card was flaking out.

Driver Modification to Improve FreeSync Range?
It may be possible to modify the drivers for the monitor to increase the frequency range of FreeSync. 40-59 sounds horrible but technically it is around 30% variance (Someone pointed out to me that the FreeSync range is 40-60 not 40-59, I personally have been unable to get this to work. If I let the frame rate go to 60 I get tearing. Thing is at 4K it isn't hard at all to dive below 40FPS. So someone gave me a link with in depth details on how to change the monitors freesync range. The link is actually to how to do it on a different AOC monitor and I wanted to discuss it here first before doing it.

This is the link http://www.guru3d.com/news-story/owners-of-freesync-monitors-can-enlarge-hz-range-with-simple-hack.html

I have a decent color calibration unit that I will use on the display and post my results.
Also you can expect some changes to the way this page looks.
Edited by givmedew - 5/11/16 at 7:01pm
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post #2 of 9
Thread Starter 
Changes from other user input:
In one part I quoted FreeSync range as 40-59... the official is 40-60 I had written 40-59 because I get tearing at 60. I have now further explained that.
Edited by givmedew - 5/11/16 at 7:06pm
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post #3 of 9
How is this monitor? I know you did a pros/cons which is great but I'm shopping around for my first 4k monitor as I think I would benefit from the larger screen and more screen space for school. I've got a HTPC with a GTX970 for gaming and 2500k. That should be able to drive 1440p games pretty decent, maybe a few upto 4k.

Which do you prefer DP or HDMI2.0? Do you need special cables for 4k or will any work?
post #4 of 9
I love mine. Only took some minor adjustments to get the color and brightness where I wanted them compared to my previous monitor (IPS). Running one Fury X I can manage to stay 50-60 FPS in most games on pretty good settings. Obviously sacrificing some, but the overall resolution increase in games is worth the trade offs.
post #5 of 9
Just got mine in today. Saw it on sale at best buy and double checked here to see if any ocn members had it and wouldn't ya know we do. Lol.

Can someone post what settings they're using? I know it's subjective but I'd like to compare. Also what profile if any is a goo one for this monitor?


Only settings I could find was from toms. They claim the srgb preset is better even than what they came up with calibrated. So it was standard preset. Medium overdrive. And srgb temp.

Also looks like windows 10 has a profile for this specific monitor.

If anyone has anything different and wants to share please do.


Sat this beside my qnix 1440p and while the colors are better on the 1440p is the res difference is awesome
Edited by majin662 - 6/23/16 at 5:28pm
post #6 of 9
Thread Starter 
anyone have any luck moddifying the freesync range on this? Just had someone tell me about CRU and it seems it can modify the freesync range.

CRU

from mister 300
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post #7 of 9
Quote:
Originally Posted by majin662 View Post

Just got mine in today. Saw it on sale at best buy and double checked here to see if any ocn members had it and wouldn't ya know we do. Lol.

Can someone post what settings they're using? I know it's subjective but I'd like to compare. Also what profile if any is a goo one for this monitor?


Only settings I could find was from toms. They claim the srgb preset is better even than what they came up with calibrated. So it was standard preset. Medium overdrive. And srgb temp.

Also looks like windows 10 has a profile for this specific monitor.

If anyone has anything different and wants to share please do.


Sat this beside my qnix 1440p and while the colors are better on the 1440p is the res difference is awesome

To me the biggest thing that helped colors was just bumping brightness. The room I'm in isn't very bright but I bumped the brightness to 90 and it made a world of difference.
post #8 of 9
https://bionic.com.cy/products/aoc-28-u2879vf-led-4k-freesync-monitor

Is the price for the monitor worth it? I own a ASus VG27HE which is a 27" 1080 monitor. I mainly game on my pc and watch some series here and there.
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post #9 of 9
Quote:
Originally Posted by givmedew View Post

anyone have any luck moddifying the freesync range on this? Just had someone tell me about CRU and it seems it can modify the freesync range.

CRU

from mister 300

I just modified it to 35-65 from the stock 40-62, works fine. 29-65 actually introduced occasional artifacting (vertical lines). Radeon Settings says 30-60 now, not 65. I guess that would require bumping the system resolution's refresh rate as well, but I don't really need to go a bit above 60, and getting a lot more wouldn't be possible.

35 is all I needed for games like heavily modded Skyrim Special Edition which can dip just a bit below 40 in some situations (and play at 50-60 in others) (at 3200x1800, RX 480 overclocked. Without demanding mods like Flora Overhaul, it can run native 4K smoothly.)

BTW many games run fine on 4K if you're smart about tweaking settings. E.g. in Overwatch, you basically only need to disable dynamic reflections.

Also, my U2879 came with two pixels stuck in blue. Stuff like running a program that blinks colors around the pixels didn't help, so looks like they're permanently dead. But! It's 4K, the pixels are so tiny. So it's like a feature, not a bug — if I can see a dead pixel, I'm sitting too close biggrin.gif
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