Single GPU setups show no performance degradation at 2.0 x16 and some/slight degradation at 2.0 x8., 5GB/s should do just fine. https://www.techpowerup.com/re

Single GPU setups show no performance degradation at 2.0 x16 and some/slight degradation at 2.0 x8., 5GB/s should do just fine. https://www.techpowerup.com/reviews/NVIDIA/GTX_980_PCI-Express_Scaling/21.html https://www.techpowerup.com/reviews/NVIDIA/GTX_980_PCI-Expre...