There will not be any fix from AMD as this is most likely. a HW related problem with "highend" AMD cards . I am selling them as well , ordinary AMD 7850 ran well at 60Hz , nvidia has ran flawlessly as well. A big fail from AMD IMHO
I just picked up this Samsung monitor on my local classifieds and thought I would give some impressions.
The overall look is excellent. Thin bezel, sleek design and interesting brushed metal looking stand.
The picture is ok. I'm coming from a glossy 1440p monitor and while the detail is very sharp, the colors look washed out and bland compared to the IPS 1440p monitor I'm used to. I used someone's calibration profile on here and it improved, but not to what I had hoped.
Performance wise, some games I play don't work properly with crossfire 290's. Watchdogs gives me horrible horizontal flickering and stuttering.
I don't seem to have any problems with this monitor coming out of sleep mode as some of you guys do.
I'm not sure if I'm going to keep this monitor and stick with the 1440p monitor I have and wait until a nice IPS panel comes out in 4K and hope drivers are improved by then.
Does anyone have a color profile that they think compliments this display well?
Flicker-free @60Hz on 3 of the most recent 4K displays
I had the opportunity to simultaneously test the following 4K displays * Samsung U28D590
* ASUS PB287
* AOC U2868
Many people have issues with flickering at 4K resolution (3840x2160) when trying to run it @60Hz.
I had no problems on any of the screens to run them at the highest resolution at 30Hz but at 60Hz, the situation changed.
Many now seem to indicate that it would have with the signal between graphics card and monitor to do. That the signal from above all AMD cards are too weak, or that the screens are not sensitive enough to pick up the signal. Some claim that with a shorter cable or higher quality cable, that could impact the result while others say it will have no affect at all. I tried the 3 DisplayPort cables that came with the three screens and could not experience much of a difference between them. But I didn't have the possibility to test any other super-duper-extra-special-with-double-cheese-and-extra-all cable.
With my Sapphire Tri-X R9 290X card I only got the Samsung screen to work flawless after I installed the latest AMD 14.6 beta drivers. The other two had problems at full 4K resolution (3840x2160) at 60Hz.
The ASUS screen had moments when it was working ok, but then came some flickering and sporadically came a crackling sound from the speaker and the screen went black for 1 second before the picture comes back. Have seen that others have reported the same issue with screen. I also had to change the settings at the display to DP 1.2 instead of 1.1 what it was as default.
With the AOC monitor, that I wanted the most because it has an USB 3.0 hub built-in, the situation was more serious than the ASUS screen. Here it was a very annoying and constant flickering. Although there were no blackouts like the ASUS screen, it was completely impossible to use. But as soon as I turne it down to 30Hz all 3 worked flawlessly.
Interestingly enough, I did the same tests with my MSI Lightning 7970 (one of the best 7970 cards on the market, Review ) and got a different result. Suddenly all three displays now worked flawlessly at 60Hz
So the claims that the signal strength from the cards is not enough in some cases look for me to be true. The MSI card is of course a much more expensive card compared to the reference model of 7970 which could be the reason why it worked flawlessly with this card and not with many of the other 7970 cards and my R9 290X card.
I keept the Samsung display due to that I'm going to keep the 290X card and soon are going to try to sell my MSI 7970 card.
Now I also got a recommendation, after I sent the other displays back so couldn't test it on them, to increase the Power Limit to +10% or +20% on the GPU. You can do that either from AMD Catalyst Controll Center --> Preformance --> AMD Over drive or from MSI afterburner
I hope this can be valuably to some of you.
So this is 529 at ncixus. Had a few problems buying from here as they could not figure out how to do my second line of my address or something.
Anyway, will i be able to get 10+ fps on my 7870? Didn't buy it for gaming, but it might be nice to try.
Didn't read the thread, but is it capable of higher hz at lower rez? ie 90@1080?
I got the Samsung U28D590D 28in Ultra HD 4K LED LCD Monitor from Memory Express for $580. The LED power status light was not working and could be barely seen in a completely dark room, otherwise there was no visible light from it in a normal room during daylight. The monitor would also not wake up after the computer was in sleep/hibernate. Unplugging and plugging the monitor back in would wake it up. Returned the monitor for a refund, minus shipping costs. Video card used was Gigabyte Windforce 290x OC. The monitor was shipped so possible damage during shipping or handling.
Then I bought another one for $550 from Best Buy (Canada). This time the power LED status light worked as it should. The monitor also wakes up from sleep properly so no issues there. Using a Gigabyte Windforce 290 OC bought from NCIX for $410 (which included the Never Settle Forever Radeon Gold Reward Bundle) and shipping was free. I find the monitor a bit bright so using around the 30 brightness setting. Sometimes high 20s, but most of the time low 30s. I was tempted to get the ASUS one because of the flicker-free technology but feel the $150 price difference is just not warranted.
Using 4k with 200 DPI scaling on Windows 7 with the default display port cable. My only complaint is that sometimes there is this brief horizontal line that flickers once in the middle of the screen. It happens rarely and only for an instant. Most likely a video card or cable issue. Also, Battlefield 4 currently randomly crashes on some maps on 4k but that's most likely an AMD/Mantle driver issue.
Otherwise the Samsung U28D590D seems to work well with the Gigabyte 290 OC in games at various resolutions, including 4k. Graphical settings always at max/ultra for everything, except for Battlefield 4 where AA is off (50-60 fps with dips). Edited by testing12344321 - 7/24/14 at 12:05pm