As one of the lucky relatively few who have managed to score an 3080 before they ran out of stock (or have they come back
in the USofA ?), you may want to post on the Nvidia forums. There are probably more people there who have experience
with the new gpu's.
"I only got 10ish more fps with the 3080 than my 2070"
- When running RUST ? If not ... Apples and Oranges. RUST may not be well optimized, and the 2070 is still a great performer.
A big part of the difference between the two is RTX performance.
It doesn't look like there is a bottleneck though. If there were a bottleneck you would see something more like 90+% cpu use
with 50% use on the gpu.
Having said that, 40% cpu with 50% gpu is a bit unusual. The gpu is normally hitting on or near 100% in games
that use 40+% cpu.
Things such as flight sims and similar games that do a lot of calculations tend to be a bit more cpu intensive,
but I wouldn't think RUST is in that group.
- I see the game is using just under 8GB VRAM so would guess your are running with a very high resolution. I believe this would generally
also tend to push gpu use over 50%, but I can't verify as I don't often check VRAM use.
- The system RAM use is also pretty high at 12GB, so if you have other stuff running in the background that may be
reducing performance.
"I did notice that I get 90 FPS in Rust at low settings, but 80ish at Max."
- When you use all low settings there is potential for pushing more processing onto the cpu, so you do want to
push graphics settings as high as possible to avoid creating an artificial bottleneck. This would be more common
when using a lower end gpu though.
If the game was not using more than say, 60\70% gpu with the 2070, then 50% gpu with the 3080 may be about right.
- If the power supply were not adequate the game would crash, or your system 'randomly' reboot.
- Assuming you have the correct RAM for your motherboard there should be no need to mess with speeds.
Using the motherboards default speed offers the best stability, but if you don't have stability issues with games
while using XMP settings, go for it.
.