If your x79 motherboard, i7 CPU and Geforce graphics cards all support PCIe 3.0 then shouldn't everything run at PCIe 3.0 speeds? The answer is no, by default your x79 motherboard and graphics cards will only run at PCIe 2.0 speeds which significantly hinders system and gaming performance. You have to Force Enable PCIe 3.0. By enabling PCIe 3.0 you will see a frame-rate increase of anywhere from 30-100 frames per second in-game.
https://www.youtube.com/watch?v=gzGSqsidL30
Motherboard: ASUS ROG Rampage V Edition 10
CPU: Intel 6950x 4.2GHz
GPU: 2x Nvidia ASUS RTX 3090 with EK Water Blocks
Memory: Corsair Dominator Platinum 64GB (4x8GB) 3,600 MHz
M.2 SSD: Samsung 960 Pro NVMEI
Sound: Creative XFI Fatal1ty Champion Series
PSU: Corsair AX1200i
