Unless you consider 8k-X might not have the needed gpu power to run it. We won’t know til we do. Time will tell what will be.
True theorectical needs to be put to actual tests.
Amd CF dies have interesting benefits.
Pretty sure Pimax were able to achieve 60hz stable on their 8KX test model according to the information given in their ama, but i’m unsure if thats over one cable or two.
as I already said, pimax forcing you to reduce the refresh to 80hz makes absolutely no sense, I want the 8K-X because I plan on getting faster GPU’s in the future, I am prepared to undersample in the meantime but that should be MY choice, not forced on me by pimax, that would be an extremely poor decision by pimax
it only makes sense if there is a hardware limitation in the headset, and “the scaler” no longer makes sense as a reason
if someone only has a GTX 1070 do they have to tell pimax now so that they can receive a 60hz only version?
Dunno how you plan to do that when you’ll need a gpu at least x2.5 times faster than the 2080ti and SLI only stacks with two cards and doesn’t give consecutive performance gains, just 20-50% in most cases where it works
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Bandwidth & gpu power. Current gpu rated 4k gaming not 2x4k gaming.
Apparently during the QnA? They said auming for 80hz. 10hz less less gpu power. Who knows.
Vr mgpu is different than standard mgpu.
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80hz 8kx only makes sense if it’s actually the panels they’re not able to run at 90. we’ve assumed so far that it was the scaler that kept the 8k back.
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But SLI still needs to have support coded into each game before its available and its not always consistent performance gains when it does work, so seems like a waste of time to me still (if i see 2080ti in SLI benchmarked over many VR games including old titles and theres a 200% consecutive stacking performance gain on all titles i’d change my mind @SweViver )
so if you are saying we need 2.5 times a 2080ti to run the 8K-X at 90hz, do you honestly think 80hz makes any difference at all in this equation, like 2.2 times required, so why even bother reducing it
Theu already have another project running a single 4k@90hz. So cam be related to projected gpu power needed.
Really pointless when its ready we will know more.
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Part of it can be supported in the vr driver.
it really doesn’t have anything to do with the gpu power though. just bandwidth and refresh rate.
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Gpu out now are said for 4k gaming.
Pimax 8KX required pixel throughput for 80hz
3840 × 2160 x2 = 16,588,800 x 80(80hz) = 1,327,104,000 pixels p/s
Pimax 5k+ required pixel throughput for 90hz (2080ti required for current rasterized titles)
2560 x 1440 x 2 = 7,372,800 x 90(90hz) = 663,552,000 pixels per second
to answer your question, it’s x2 the performance of the 2080ti required to run the 8KX at 80hz in current rasterised titles with the same performance as the 5k+ at 90hz on the 2080ti.
if the 2080ti in SLI gave you 200% stacking gains in performance in all titles, then you could say you can run the 8KX with a SLI setup with the same performance as 5k+ with a single 2080ti.
I did say I planned to UNDER sample until GPU power caught up, my point stands, 80 v 90hz is a tiny difference, even using your calculation
for refrerence I already run onward on about 300% supersampling on the vive which is actually more pixels than the 8-kX, gpu power makes no sense to release a product hobbled when it makes a tiny difference to the GPU power required
Maybe @SweViver or someone with a card and headset already might be interested to do a review on how much performance gain you get undersampling to 50% in SteamVR and Pitool settings .5 compared to 1 and 100% in SteamVR on the 5k+ to give you an idea of performance gains, I know you dont need antialiasing in higher resolutions so you can factor that in. But it’d be hard to measure considering the frame cap is at 90hz.
In any event I doubt a single 2080ti would be able to get you 80hz stable on current titles even when undersampled due to the sheer pixel count. and I don’t know why you’d reduce the SteamVR input resolution below 4k if you wanted to play on the 8KX, seems counter intuitive.
Whats your point? They shouldn’t release the 8K-X at all?
My point is its going to be at least 2-3 years before the 8KX is even feasible to run at 80hz unless 2080ti in SLI gives you stacking 200% performance in all titles, probably more like 5-10 years if AMD doesn’t offer competition with the high end nvidia products, as that would allow nvidia to continue to prolong their releases and trickle down performance improvements 20% at a time with no high end competition.
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Yeah, so what? Why does that justify releasing at 80hz instead of 90hz?