Right now I run 2 GTX 780s. so a GTX 970 or AMD 290 graphics card equivalent or greater and two GTX 780s are definitely equivalent if not better than a 970 and even a 980.
But it seems that all VR tests only read one Card and not if any are in sli.
I did the Steam test and it fell in the 75 percent area in the Capable. But is it testing Sli?
Since the oculus test offers no numbers or actual benchmarks... Ill use the Steam VR Test.
Test 1: Average Qualtiy 4.1 Frames tested 9519 Frames below 90 0 0% Frames CPU bound 0 %
Test 2: 3.9 9850 0 0
test 3: 4 9548 0 0
My intentions with the OR
The movie theatre Virtual Desktop Tabletop Sim Arma 3
My questions are;
Does the Steam VR base its results on the SLI but only reads it as a single card? Is there any test that tests the SLI? What are other results of a 980/970/ and other 780s?
I believe SLI is not fully impelemented by either platform at the moment. Single GPU only. Nvidia has SLI implemented in VR Works and it supported in the Unreal Engine 4 .. but it is far too early for developers to bother with that. a GTX 970 is minimum recommended spec.
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I did a bit of research for you. SLI causes latency in alternate frame mode (where every nth frame gets rendered by each GPU), for desktop and a 2d display that is okay, but not for VR. Nvidia has added a VR SLI feature recently that allows each GPU to render to each eye ... but this is bleeding edge and most developers have not added that to their pipelines yet.
Core i7-7700k @ 4.9 Ghz | 32 GB DDR4 Corsair Vengeance @ 3000Mhz | 2x 1TB Samsung Evo | 2x 4GB WD Black ASUS MAXIMUS IX HERO | MSI AERO GTX 1080 OC @ 2000Mhz | Corsair Carbide Series 400C White (RGB FTW!)
That will likely be required for higher resolution displays (sli controlling each screen independent of each other) The display tech is already there, 4k,8k and 10k screens already exists. Just the processing power to push for vr is lacking.
and remember SLI only works if developers support it .. its not a 2x speed increase just because you have 2 GPU's
I never claimed that it did, I know how SLI works. -- But apparently with VR, that might be the case with one GPU pushing to one eye, and the other pushing to the other eye.
I did a bit of research for you. SLI causes latency in alternate frame mode (where every nth frame gets rendered by each GPU), for desktop and a 2d display that is okay, but not for VR. Nvidia has added a VR SLI feature recently that allows each GPU to render to each eye ... but this is bleeding edge and most developers have not added that to their pipelines yet.
If that is the case, I am sure AAA titles will support things like this in the future. If I can run it on high, I can probably run it on Med, But I am looking to get the OR, and when the new Nvidia cards come out grabbing two 980s when the price drops.
So question with the VR test on steam
Is there a way to tweek the settings on the video or does it adjust the settings to maintain roughly 120 FPS?
@About47Pandas OR has 90 Mhz screens so it needs to maintain that 90fps frame-rate to prevent motion sickness. I believe devs of both the vive and Oculus Rift have made it either very hard or impossible to tweak anything to maintain the experience.
Core i7-7700k @ 4.9 Ghz | 32 GB DDR4 Corsair Vengeance @ 3000Mhz | 2x 1TB Samsung Evo | 2x 4GB WD Black ASUS MAXIMUS IX HERO | MSI AERO GTX 1080 OC @ 2000Mhz | Corsair Carbide Series 400C White (RGB FTW!)
Well if it isnt SLI supported... I suppose I should wait.
I have only ever run SLI/Crossfire PCs, even when it was a pain in the ass awhile back. it got super smooth, now its back to being garbage again with VR...
