Hello Friends,

SABERTOOTH 990FX/GEN3 R2.0

It is a pretty heated topic on some forums, the ASUS board you mentioned claims PCIe 3.0 support yet many say it is only emulated not true PCIe 3.0. Given that no GPUs currently available in the consumer segment can fully saturate or bottleneck on PCIe 2.0 x16 bandwidth there is no way to determine if ASUS' claims are true or just a BIOS trick that fools the OS into detecting PCIe 3.0. The only reason anyone would want PCIe 3.0 is for SLI/Crossfire solutions as PCIe 2.0 x8 is about the same bandwidth as PCIe 3.0 x4 so with more than 2 GPUs you will be running into some bottleneck on a PCIe 2.0 board. Personally I don't see what all the fuss is about, you lose only a tiny amount of performance via bottleneck anyway given that multi GPU scaling yields diminishing returns for every GPU you add past 2 anyway. There is no way to know for sure if the GPUs are bottlenecking or if it is just the scaling causing a performance hit.