40 lane vs 16 lane PCIe

Hunter_01

Commendable
Mar 21, 2016
1
0
1,510
Hi everyone,
So I've done a little research into this but nothing I've seen really helps.
I'm working on a build and I want to have 2 GPUs (R9 Nano) and a NVMe solid state card. I am trying to find out what the performance comparison running these 3 on a 40 lane CPU at 16x 16x 8x vs a 16 lane at 8x 4x 4x. Certain things I have read suggest that the difference will be minor but I feel like it will be a lot. Any ideas or comments, please give me your advice thanks