VR with newer EGPU enclosures
I've done this in the past with the Gigabyte Aorus GTX 1080 box and a Akita Node with a EVGA 2080 (corsair sfx psu), and it worked fine on machines where I disabled the internal nVidia card (otherwise there was an intermittent stutter). 90hz with HTC Vive works fine I've found. However I got a Valve Index a while back and found that apparently it doesn't work at 120hz with both setups. When I asked Valve they confirmed last spring (original Index release timeframe) that they were only able to get 90hz and it wouldn't work reliably at 120hz with EGPU setups. Has anyone been able to achieve this recently? I've not bothered to try again, but wondered if anyone else had or had been able to hit 120hz with a Valve Index reliably with some setup?
Any further thoughts or updates? My index arrives in a couple weeks and I want to be ready. I might just buy a desktop if I can't make this work well.
@blipblorp, Did you get any further with this?
|dGPU||eGPU @120||eGPU @ 90|
|Ram usage GPU||2.8/8 Gb||3.6/10 Gb||4.6/10Gb|
|Temp GPU/CPU||65c / 70c||60c / 60c||56c / 57c|
I've been able to hit 120FPS with my setup, 2080ti + RB15 early 2019.
That said... 90FPS with boosted res works FAR more consistently & better. Keep in mind eGPU's excel at resolutions, not framerates. 120FPS is doable in a lot of games with my eGPU setup, but it doesn't blow it out of the park. I often have to have my res lowered or the game settings lowered significantly. If I'm playing something like Superhot, that works perfect. But generally, I vastly prefer higher game settings + 125-130% resolution + 90FPS vs having everything much worse looking to achieve smooth 120FPS.
All that said... the newer 3XXX cards I hear can achieve this. And it's recently been discovered that tigerlake/icelake remove a lot of the bottlenecks that eGPU's famously hit on most laptops by running the TB3 controller through a PCH. My laptop's PCH connection gets hit hard when I'm using my 2080ti in VR to the point where I can't have anything else plugged into it except a KB+M otherwise all my USB connections start dropping out. I garuntee if I had a tigerlake laptop I'd easily claw back 10% performance, which matters when it comes to things like VR. And it'd be even more if I had beefier cards like a 3080 or 3090.
I was running HLA pretty well with a 5700XT XGS Pro at 90fps. But there were definitely some lag spikes. I'm planning to try an Nvidia card and then make a final decision on what to stick with permanently.