Originally Posted by Smoot178
Just got my QNIX and I LOVE it. Bright and beautiful. **** stand, but the stand isn't why we buy them.
I am wondering how 3 of these in surround mode on two EVGA GTX 780ti SC would fare. Anyone have any benchmarks on this? I bought this monitor along with those 2 cards and I kinda wanna try the three way surround.
The GTX780ti is the fastest GPU period right now but the problem isn't speed it is VRAM. With one 1440p monitor it is recommended to have 2GB+ of VRAM, having three you will need 6GB+ to support the pixel space and not get bottlenecked. Now that doesn't mean it won't work and work well in some situations, it just means certain games with huge texture sizes will get bottlenecked. One good example is Skyrim, i have a GTX780ti and when playing skyrim on my Qnix i have seen the VRAM get to about 2.4GB. Now that is with one screen so if you triple that you are going to be getting cut short with on;ly having 3GB total usable VRAM.
Now for testing purposes i have setup my crossover, Qnix and Dell(1440p) in surround to benchmark(and borrowed a second and third GTX780ti). Needless to say using one card got destroyed in many modern games, however older games like shadowrun, Dead space 1, tomb raider anv. all were within playable FPS(around and just over 30-45) with some mainly texture or VRAM intensive settings off(AA, object detail, texture detail).
With two cards many games like BF4, Skyrim, and crysis did get a good deal better in FPS but there was a catch. At all points in the game there was always parts were i would get a BIG drop in FPS, like turning a corner and getting view of a very large area with a lot of textures visible. I know this happens to a certain extent anyway but this was different and the change was excessive. Like in Skyrim when in a cave i could get as high as 80FPS but when leaving the cave and going into open space(or "skyrim") i would drop to 20-30FPS. Battlefields results and crysis(3) were very similar. Older games ran perfectly fine on two cards, i think the somewhat raided setup of the VRAM gave it just enough to handle older textures fast enough.
With three cards the FPS increased in older games again but it was a lot less predominant. Only gaining about 25-30% in overall frames. There was also several spots that the frame were less than with 2 cards. Newer games were even worse. The increase was apparent in certain parts of the games that were very confined(skyrim cave) but any open view areas were just about the same as having two cards. Areas that i dropped to 25FPS with two cards dropped to 28-30FPS with 3.
Now one thing that made a big difference in these bottleneck points was dropping any setting that was heavily reliant on VRAM. Like in Skyrim turning texture size all the way down and turning view distance all the way down made a huge difference being outdoors. Battlefield didn't get much better in most areas but there was a difference(i think BF4 is just buggy anyway). The most convincing evidence that this is a VRAM bottleneck is that these settings changes only effected the lowest FPS and not so much the average.
So bottom line triple monitoring these with two GTX780ti's would be potentially viable if your expecting to turn a few settings down(related to VRAM use) and get no better than 60FPS(which would make overclocking a little mute). Really in this situation it may be more viable for a Titan or if a 6GB variant of the GTX780ti(higher than 6GB would be best but options are limited). VRAM overclocks also seemed to help more than what i would usually expect(10FPS from a mere 100mhz). Lastly if you do run portrait surround with 1440p monitors i highly recommend debezeling due to the thick bezel size.
Originally Posted by HardwareDecoder
it's not because of heat, or being oc'ed too high, well it is because of being oc'ed too high but not because the card is oc'ed past what it is stable @ 60hz. I know what you are saying but it's not correct in this case.
I'm on water and my core hits 50c max. it isn't normal gpu artifacting I know what that looks like. It is full display corruption.
The way to explain it is most of us with this problem can do 1200mhz @ 60hz or 1100 mhz @ 120hz.
but not 1200mhz @ 120hz. Which doesn't completely make sense since the max monitor oc should have nothing to do with the max gpu oc
It seems to be a problem with the qnix since I think people can do 1200mhz @ 120hz on different monitors besides the qnix
This may be unrelated but i run my GTX780ti at 1241mhz and run my Qnix at 144hz while gaming in first person shooters(120hz in everything else). So if the issue was with the Qnix shouldn't it be constant between cards? Or could this be an issue with the Qnix combined with AMD cards. I also ran the Qnix at at least 120hz with a GTX 460, 570(SLI), 760, 770(SLI), 780ti. I did notice a higher potential refresh overclock with single card solutions and noticed there was a slight trade off in overclock between the monitor and VRAM(meaning with certain VRAM overclocks would limit monitor overclocks but nothing related to the GPU clocks).Edited by Spartan F8 - 12/28/13 at 9:53am