Originally Posted by Carniflex
It really depends on the content. A single 7870 can push 2x 4k screens at 120 Hz if it's mine-craft
So if the content is designed to give one 120 Hz 4k on a 970 or its equivalent then it is perfectly achievable. It sure would not look worse than something at 2160x1200 resolution, at worst it would look the same (with physically smaller pixels and less screen door effect as a result). Now problem with "4k at 120 Hz" comment is actually currently bandwidth and the fact that current generation headsets use only a single cable. DP 1.2a maxes out at approximately 90 Hz with 8 bit color per channel at 4k resolution after taking into account the overhead in the protocol. What would be sensible thing to do would be using two connectors ofc (one per eye) and having the physical displays support variety of resolutions / refresh rates. Meaning that one could do in such a scenario, for example, 1440p (upscaled to the native resolution of the display) at 200 Hz per eye or native UHD at 90 Hz per eye. Then there is the DP 1.3 standard which increases the bandwidth further but even then two cables has twice the bandwidth of one
Yeah that's very true. It's very dependent on the content, that's why I mentioned that the hardware demands of games built for VR are likely to be quite a bit different than non VR Games.
I can see alot of optimization taking place to get the vision of the developers working well in VR, if it's a first person game you probably wouldn't need to render something very far off into the distance, thus saving computational resources, or even things the player wouldn't be able to see from where they are positioned, things like multi resolution shading would also help a great deal as-well in terms of performance.
VR can work really with with the PlayStation 4, or even a single 7870 or a more powerful GPU, it's just highly dependent on the games and the content created for VR.
I myself would like to play VR games and non VR games with a VR headset on my PC, games like Guild Wars 2, Fallout 4 and Grand Theft Auto V. It'll probably be really taxing to run those games at 75-90 fps, especially Guild Wars 2 and Fallout 4, but nevertheless it would be fun to play them.
Alongside that, watching movies and anime in VR with SVP to run them at a higher frame-rate.
Originally Posted by xioros
I'm mostly interested in this
That would be crazy, 2560x1440 per eye sounds insane!
But I can't help but think about the computational power required to push that many pixels at 90-120 fps.