CF/SLI建議換張主機板是至少支援「雙PCIe X8」。
不過只有為了這個PCIE換MB,不太划算。
更正:衰減不明顯,注意文章後面一段。
We hope our data helps settle a lot of flame wars on the forums. PCI-Express 3.0 x8 is just fine for this generation of GPUs, and so is PCI-Express 2.0 x16. You lose about 4% in performance at PCI-Express 2.0 x8 and PCI-Express 3.0 x4, but that's no deal breaker. If you're still gaming on a PCI-Express 1.1 platform, congratulations, your future-proofing has worked for many years, but it may now be time to upgrade.
參考:techPowerUp - NVIDIA 1080 PCI-Express Scaling