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blipblorp
(@blipblorp)
New Member
Joined: 4 years ago
 

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?

This topic was modified 1 year ago

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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pazza
(@pazza)
New Member
Joined: 1 year ago
 

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.

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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imconfused
(@imconfused)
Active Member
Joined: 11 months ago
 

@blipblorp, Did you get any further with this?

I just got my RTX 3080 running in an eGPU and I'm seeing HUGE performance decreases compared to the dGPU GTX 1080

  dGPU eGPU @120 eGPU @ 90
FPS Peak/AVG 120/94.5 75/72.3 89/78
Lag GPU/CPU 6.5ms/3.6ms 11ms/10ms 8.5ms/4ms
Ram usage GPU 2.8/8 Gb 3.6/10 Gb 4.6/10Gb
Temp GPU/CPU 65c / 70c 60c / 60c 56c / 57c

 

2017 15" Acer Predator Triton 700 (GTX1080) [7th,4C,H] + RTX 3080 @ 32Gbps-TB3 (Razer Core X Chroma) + Win10 // benchmarks 3dmark,TW3,CV6,Forza 4,Metro Exodus [build link]  

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Azorico
(@azorico)
New Member
Joined: 9 months ago
 

Shame there isn't an update on this. It was one of the factors that led me to bet on a laptop upgrade instead.

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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Lycid
(@lycid)
Eminent Member
Joined: 2 years ago
 

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.

Laptop: Razer Blade Advanced 15" w/ GTX 2060, i7 8750H, 16GB RAM
eGPU: Razer Core x Chroma w/ 2080ti


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lwf
 lwf
(@lwf)
Estimable Member
Joined: 1 year ago
 

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.

2020 15" Lenovo Slim 7 [10th,4C,G] + RTX 3070 @ 32Gbps-TB3 (ASUS XG Station Pro) + Win10 [build link]  

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