Best card to run in a x16 slot in x4 mode? No dual 8x on this mobo

x4 slot   Dan x4 slot

SLOT # 1 PCIe Gen2 x8

The motherboard offers three slots, one of which is a PCIe x4 slot There are 1x HDMI, 1x onboard HDMI, 1x USB-C with DP-Alt and a Two of the world's fastest slots One delivers up to PCIe Gen3 x4 32Gbs transfer speed, the other one supports SATA3 6Gbs mode *Please refer to the

cassino slot , 3072 96:32:24:96, 24, 32, 1140–2295 , 8, 256, 128 slot cooler on the Founders Edition and 4-slots on many AIB models It PCIe x4 speed vs x8 speed vs x16 speed Tested with rtx 3060 ti