The CPU determines GPU performance. On Nvidia anyway.

[jigger]

The 10gb VRAM buffer has been discussed at length in this thread and has never been proven insufficient but feel free to add to the discussion if you have some new information that's come to light.

https://forums.overclockers.co.uk/threads/10gb-vram-enough-for-the-3080-discuss.18897519/page-224

The 6800XT is a good product but is it better than the 3080? I guess it depends on what you want from it but personally I prefer a card that has the ability to run new AAA games with the lastest graphical enhancements turned on.

I’ll pop some screen shots up later. In my experience yes.

RX 6800XT>RTX 3080

To get the most of Ampere you need a top end CPU and RAM both overclocked to within an inch of their existence, along with extreme cooling and a very high end PSU. On top you need to be running a DLSS supporting game and probably a high end NVME drive to catch any buffering/page file swaps in the case of the RTX 3080 and it’s 10gb VRAM limit. Move away from that scenario and RDNA2 is better.

 

[jigger]

I could well believe that with 16GB of VRam the 6800XT has better or more consistent frame times.

Even if the game doesn't need more than 8 or 10GB, which is not an exacting argument as games will (to with in limits) make do with whatever they have by file swamping, the less VRam you have the more of that will go on so its not difficult to see how more is better, if you have a 10GB card and using 8.7GB but the same game with a 16GB GPU using 10.6GB i have no doubt you will feel a difference.

Then Nvidia would be burning even more CPU clock cycles with memory calls and a 6gb difference could be easily swamp system memory and then you end up calling on even more CPU cycles caching back to storage from RAM. All while the lowly RTX 3060 has long tapped on processing grunt and has 12gb of VRAM twiddling it’s thumbs. Got to love Nvidia.

 

[jigger]

Looks as if nv Hopper could include CPU cores. This could possibly solve Nvidia’s CPU overhead issues.

https://news.ycombinator.com/item?id=26781440

An interesting concept.

 

[jigger]

It has been done before, Maxwell had a ARM CPU in it.

Project Denver X86. Sore subject.

It’s an interesting but also slightly strange move by Nvidia, with CPU core counts increasing at such a rapid pace.