Submitted by one_eyed_sphinx t3_10x50us in deeplearning
I need to build a home server that will use Dual RTX 4090 cards. all of the motherboards support PCIe configuration of 8x 8x for dual GPU (16x for single).
I know data transfer is not a bottleneck usually, but if I need to serve a lot of models the loading/unloading of every model can take significant time even on 16x mode.
Are there any recommendations for what CPU to get (if I don't want to take server grade CPU like threadripper)?
suflaj t1_j7s57dy wrote
At the moment a 7950X in eco mode combined with a ROG Strix X670E seems to be the best combo.
It running in 8x mode on PCI-E gen 4 doesn't really matter, according to benchmarks the performance difference is a few %. It will take a lot of time in 16x because it's pretty much the same speed. It will not get significantly faster with a different mobo, you're limited by the GPU itself, not the interface.