4k with 290x crossfire experience

wand3r3r

Diamond Member
May 16, 2008
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I received my 4k screen today so I've tried a couple games and it's been very surprising. I was expecting 4k to have a ton of issues (scaling/drivers etc.) and games to need settings lowered a lot. I've only tried a few games so far but it works amazingly well, at least in 3 out of 4. From the time I plugged in the monitor and tried a few games I have yet to see any major problems that would be a deal breaker. Windows seems to scale well with the explorer and control panel but has pretty small text in the task manager and in IE. Those are tiny issues to me and they don't detract from the experience one bit. So far it seems like the 4k "issues" are very minor, granted I haven't done very much yet.

I played a few games, Bioshock and BF4 and I was surprised by how well they ran. I left BF4 on ultra with aa deferred disabled because I don't like blurring and it was almost a steady 60 with dips of high 50's every now and then. I played operation locker with 32 players, so there may be some maps which require dropping aa, but it was flawless in there on ultra. Bioshock has some tearing but it felt very playable on max settings without any slideshows.

I'm trying to gauge input lag, in bf4 it is different than my old screen, I'll have to see if that matters. Right now the image fidelity feels like it's well worth it.

These cards are beasts and if you have a similar setup I would highly recommend going 4k. Perhaps it's premature to form a conclusion but day 1 has felt great so far. Now I just need my magnifying glass to see the clock in the corner (jk it's small but legible at least with good vision).

One game had major shimmering issues, BL2 but I didn't try playing around with the settings I just quit. I'll try another day and see if it is due to 4k or what was going on.

Windows 8.1
290x crossfire 14.9
28" AOC U2868PQU
http://www.aocmonitorap.com/root/hk_en/product_display.php?id=556

Edit: My experience so far in a nutshell...

4k Monitor - a users impressions

I just got a 28" 4k monitor so I would like to share my experience(s) along the way. Feel free to ask any questions you may have as information was very sparse as I was looking into the purchase.

I found this Windows 8.1 Scaling article very interesting.

While this article demonstrates some of the questions I had such as are things 1/4 of the size, I haven't ran into anything which is a deal-breaker.
[timg]http://winblog.blob.core.windows.net/win/sites/2/2013/07/Windows_2D00_8.1_2D00_Calc_2D00_Overlapping_2D00_Displays_2D00_Wide_5F00_174D6039.jpg[/timg]

My setup:
Windows 8.1
4770k/16GB/5ssd&hdds/Z87
R9 290x crossfire (reference)
28" AOC U2868PQU

Mouse & 4k:
Logitech G502 Proteus core which I wrote a little about.

I mention the mouse specifically for a good reason, 4k is a ton of real estate coming from 1080p or similar. It would literally take 4x as much mouse movement without adjusting the speed or DPI rate.

I found myself going from around 1500-3000 DPI (probably under 2000DPI in FPS to retain accuracy) to ~5-7000 DPI. Ironically 7000 DPI would feel a bit "jumpy" for lack of a better term on 1080p or similar resolutions but feels a lot more accurate in 4k.

Size 28" and 4k
I was hoping for a 32" (or so) 4k display since the DPI is very high in 28".

I have used various displays extensively such as 26" 1200p, 27" 120Hz 1080p which I found too pixelated (overly large pixels), ~24-26" 1080p, 22" 1680x1050, etc.

I am very satisfied with 28" so far. The DPI is high and text looks especially crisp and clear. It makes a huge difference having the extra DPI, similar to the crisp display on the retina phones (when that was "new" and coming from old tiny screens with huge visible pixels).


Scaling and setup
I was concerned that Windows wouldn't be very usable as far as everything being 1/4 of the size. I haven't done much but I have checked that my commonly used applications scale perfectly. Some details are small (the clock for example but I can still easily read it) however nothing has bothered me thus far.

The monitor only required twisting the base to the swivelable arm coming from the display.
NkENR9zl.jpg

GNWggK9l.jpg

I simply plugged in the display to my running computer via the DisplayPort cable and it was automatically setup by pressing windows + P to extend the desktop with a 1200p 26" display. Between Windows and AMD drivers it was plug and play and chose a good scale. I just checked windows and it had automatically put scaling of 150% which I didn't know but everything was very legible. I tested "smaller 100%" and the text and all of my open windows are considerably smaller. I guess this is how it would look without scaling at all. My eyesight is excellent and I sit close enough so I could work with 100% scaling but I would guess that many people would prefer the 125 or 150% scaling to see everything in a closer size to their old displays. It is interesting to see that Windows automatically set that and it was a very nice setting. I will try 125% to get the most space for productivity. With 125% scaling it is still relatively small, but I can keep multiple windows open and have a couple side by side with ease and room to spare.

100% scaling difference in size (28" 4k next to 26" 1900x1200)
Note how much more of the picture fits on the screen! It's way more detailed.



On a side note, Windows doesn't seem to set the scaling for individual displays which seems like a bad default. Someone can correct me if I'm wrong here. When I changed 100%->125% both displays were at 125% although I didn't tick the checkbox to apply the setting to all displays.

Productivity
With 125% scaling it's basically possible to get 3 windows side by side provided you sit close enough to read the text. AT on the left has smaller font than the middle and right browsers and would probably need to be zoomed in slightly, although that demonstrates the difference in scalability between chrome and Firefox. Firefox scales websites better and they seem to be 125% by default with windows 125% scaling. I think a 32" or so would be better and if it's big enough to be legible you could use 100% scaling and quite easily get 3-4 windows side by side.

I assume this screen shot will be mangled unless viewed on 4k. :S It will be hard to tell but 3 windows is doable when close enough although text is relatively small. It doesn't even feel as small as some laptops with 1080p.



Multimedia
720p videos look pretty good, when they are actual size (small on the display) they look amazing. 4k content will be beautiful and detailed when it finally starts becoming mainstream.

Pictures look amazing, it has much more detail and you can see a lot of detail.


Games
Games and productivity are the two reasons I wanted 4k. Playing with multiple windows open works well, although I can see the few extra inches could help in that way. There is plenty of room with multiple documents open.

I've only played a few games so far but Bioshock and BF4 in particular are great in 4k. I use mantle in BF4 and it plays very smoothly in the gameplay so far with max settings. The 290x's are finally being utilized to the full extent.

Drivers
So far I have only experienced a "blank" screen while playing an old steam game which I had to edit a file to get 4k to show up in the resolutions. Gaming in Bioshock and BF4 works amazingly smoothly with XDMA crossfire which is excellent since we need dual cards to max the settings in 4k. A single high-end card could still give you a good experience without e.g. AA, but definitely can't run max settings.


Side notes:
I've noticed an occasional flicker near the bottom left throughout about half of the width in a row or so of pixels so I'm not sure if I'll return the screen. :S

I'm considering trying out the Windows 10 technical preview just to see if they have improved 4k in any way.

tldr;
4k is great, try it! Get a good mouse and GPU or two and enjoy.
 
Last edited:

Termie

Diamond Member
Aug 17, 2005
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www.techbuyersguru.com
Thanks for sharing your experience. Great to hear that it's been a positive experience all around for you.

I assume you plugged in a DisplayPort cable and had a 60Hz full-resolution connection right away, correct?

Would you mind checking VRAM usage in BF4 when you have a chance? Curious how close it gets to 4GB.
 

wand3r3r

Diamond Member
May 16, 2008
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Yeah I'm using DisplayPort with 60 Hz. I'll have to check, I'm curious too. It was using mantle, naturally.

So far I believe 4k is the biggest advancement or upgrade that I've had in years! Adding more FPS doesn't visibly affect (unless stuttering) it in nearly the same way as quadrupling the pixels.

Text is so crisp and clear too, so far I love it.
 

Termie

Diamond Member
Aug 17, 2005
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www.techbuyersguru.com
^ Awesome!

Never has the PC had such a huge increase in resolution in one fell swoop. 4K is a revolution. People downplay it, but that's because they haven't tried it. I think manufacturers have seen that PC users don't just want bigger monitors (27"/1080p, I'm talking to you), they want better monitors. For gamers, we have 144Hz/Gsync, for all-around use, we have 4K.

How many years until we're all gaming on 4K/120Hz monitors? I guess that would take about twice the power of 290X CF. Hmmm, that'll be a while. One card with that power will probably arrive in 5 years or so, based on historical trends.
 

wand3r3r

Diamond Member
May 16, 2008
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I just fired up BF4 to try check vram usage and it was around 5.8-6GB on an empty operation locker server. I have to double check my settings to be sure but that was with ultra, without deferred aa.

I've spent a few hours in bioshock infinite and it works flawlessly. It's a steady 50+ with generally 60 fps flat and seems to use from 4 to 5.7 GB with max settings.

This depends on whether MSI AB reports it correctly since it only shows GPU1 memory usage although both should be monitored. Since it goes above 4GB I assume it's working, but I'm not 100% sure.

I'm really loving text, it's just so crisp on the 4k screen. I have a 26" 1200p next to it atm and it looks so pixelated.

I can't wait for 4k with lightboost, 120Hz, a-synch and all the goodies. Supposedly they call this display 10 bit but it's really 8 bit + FRC or some other hack to get the supposed 1B colors+.

4k is a huge upgrade and can't be understated. I still have yet to find a deal breaker.

My one other thought is that I'm glad I have a high DPI mouse. I have to turn it up to have good motion with 4k. It's funny when it goes to the other screen it starts zipping across the screen.
 
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alcoholbob

Diamond Member
May 24, 2005
6,271
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How long is your displayport cable? I need at least a 15 foot run but according to the specs displayport is only rates to full bandwidth out to 9 feet. Lower gauge displaport cables are very pricy ($110 for a 15 foot 24 awg cable) so I'm wondering if dp can keep up with hdmi.
 

Techhog

Platinum Member
Sep 11, 2013
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26
I received my 4k screen today so I've tried a couple games and it's been very surprising. I was expecting 4k to have a ton of issues (scaling/drivers etc.) and games to need settings lowered a lot. I've only tried a few games so far but it works amazingly well, at least in 3 out of 4. From the time I plugged in the monitor and tried a few games I have yet to see any major problems that would be a deal breaker. Windows seems to scale well with the explorer and control panel but has pretty small text in the task manager and in IE. Those are tiny issues to me and they don't detract from the experience one bit. So far it seems like the 4k "issues" are very minor, granted I haven't done very much yet.

I played a few games, Bioshock and BF4 and I was surprised by how well they ran. I left BF4 on ultra with aa deferred disabled because I don't like blurring and it was almost a steady 60 with dips of high 50's every now and then. I played operation locker with 32 players, so there may be some maps which require dropping aa, but it was flawless in there on ultra. Bioshock has some tearing but it felt very playable on max settings without any slideshows.

I'm trying to gauge input lag, in bf4 it is different than my old screen, I'll have to see if that matters. Right now the image fidelity feels like it's well worth it.

These cards are beasts and if you have a similar setup I would highly recommend going 4k. Perhaps it's premature to form a conclusion but day 1 has felt great so far. Now I just need my magnifying glass to see the clock in the corner (jk it's small but legible at least with good vision).

One game had major shimmering issues, BL2 but I didn't try playing around with the settings I just quit. I'll try another day and see if it is due to 4k or what was going on.

Windows 8.1
290x crossfire 14.9
28" AOC U2868PQU
http://www.aocmonitorap.com/root/hk_en/product_display.php?id=556

Unless you monitor is over 30 inches, you shouldn't be using more than 2x MSAA in the first place...
 

wand3r3r

Diamond Member
May 16, 2008
3,180
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How long is your displayport cable? I need at least a 15 foot run but according to the specs displayport is only rates to full bandwidth out to 9 feet. Lower gauge displaport cables are very pricy ($110 for a 15 foot 24 awg cable) so I'm wondering if dp can keep up with hdmi.

It's probably about 5' (standard length I guess). Unfortunately I don't have a longer cable to test it out for you.

Unless you monitor is over 30 inches, you shouldn't be using more than 2x MSAA in the first place...

It's 28" but until I hit a performance limit why not use it? I'll have to try a larger 64 player map and see how it likes that. It handles locker surprisingly well.
 

amenx

Diamond Member
Dec 17, 2004
3,764
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I'm really loving text, it's just so crisp on the 4k screen. I have a 26" 1200p next to it atm and it looks so pixelated...

4k is a huge upgrade and can't be understated.
I think we are all in agreement that 4k would be a huge jump from 1920x1200. But I would like to know how much 4k on a 28" screen vs 2560x1440 on a 27" screen would be in practical terms. I cant rationalize the move to 4k on 28" but am interested in 4k at 30-32" down the road as a logical move from my 1440p 27" display.
 
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wand3r3r

Diamond Member
May 16, 2008
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Updated the OP with more content about the experience in a nutshell.

As for the difference between 1440p and 2160p (4k), it would certainly be a big upgrade. I can tell the difference between 1080p and 1200p easily, well I also use the real estate for productivity so it's very noticeable to get more e.g. content in a display.
 

amenx

Diamond Member
Dec 17, 2004
3,764
1,900
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Updated the OP with more content about the experience in a nutshell.

As for the difference between 1440p and 2160p (4k), it would certainly be a big upgrade. I can tell the difference between 1080p and 1200p easily, well I also use the real estate for productivity so it's very noticeable to get more e.g. content in a display.
Pixel-wise, 4k is indeed a huge jump from 2560x1440.

1920x1080 = 2,073,600 pixels
2560x1440 = 3,686,400
3840x2160 = 8,294,400

But I doubt it would have as much of a visual impact with moving images (gaming, movies) on 27/28" screens. I'm inclined to believe that 4k was more intended for TVs (due to the larger screens) than they were for PC monitors, unless for professional or scientific uses that may require the extra res or precision. I think for under 30" screens, there is a point of diminishing returns for 4k (since I'm quite content with what 1440p does for me). Visible pixelation of 1080/1200p are not a problem at 1440p, and I could easily tell the diff between these resolutions on the desktop, BUT less so with gaming. 4k from 1080/1200p should be very visibly apparent, just not so sure it applies on a similar level from 1440/1600p on 27/28" screens. 'Productivity-wise' it should be massive but even that may be limited to how small you can allow things to be while remaining comfortable (no squinting).

To flesh out more detail with 4k content, I think I would need a bigger screen to appreciate it. Of course I could be wrong, so would love to hear opinions of those who moved from 1440/1600p to 4k on less than 30" displays.