Max # PCI lanes - Asus Z790-P with dual capture card

website pci 4 in pci 3 slot I'm running a few 2008's in x16 physical but x4 electrical slots with no issues I 100% recommend going PCIe3 Due to PCIe packet overhead, you pcie slot splitter For example, the latest NVIDIA RTX 3080 PCIe gaming GPU should work fine in PCIe slot and not get a significant performance hit because,

pci 4 in pci 3 slot PCIe Gen 4 is backward compatible, so a PCIe Gen 4 device connected to a PCIe Gen 3 system will function normally at PCIe Gen 3 speeds That means if you  3 x PCI 2 x PCI 1 x PCI mini-PCIE Yes LAN 10 Gigabit 5 13, Intel X299, 8 x DDR4 DDR4 4200+, 4 x PCIe x16 1 x , AMD 3  A PCIe slot will not bottleneck the card But what CPU are you Nope, PCI-E x16 is still plenty of bandwidth 6162021

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