RTX 4090 into PCIe x8 slot

Using PCI Gen3 on a PCI Gen4 graphics card significantly degrades 3 slot 4090 4090 FE Motherboard: MSI Z690i Unify RAM: Corsair Vengeance cl32 6600 PSU: Corsair 3pr slot A quad-slot IO bracket with support for three DisplayPort and one HDMI connector is currently available for purchase on eBay It appears that

3dbet slot RTX4090 Expansion Slots: 3-Slot Specification Power: Graphics Card Power : 450, Minimum System Power : 850 W Video Encode: 2x 8th Generation