GPU performance issues due to incorrect PCI bus speed
GPU performance issues due to incorrect PCI bus speed
Hello, Your GPU is showing PCIe x8 3.0 instead of the expected x16. I’m unsure why this happens since it’s installed in the first PCIe x16 slot. There’s a WiFi card in the second slot and a USB 3.0 card in the x1 slot. Could these factors be affecting its performance? I checked the BIOS, setting PCI_E1 gen to gen 3 didn’t help—it remains Auto. Everything else in the PCI settings is also Auto. I recently reinserted the GPU and other components into their slots, but the issue persists. Any suggestions would be greatly appreciated. Thanks.
RX 6650 XT is a PCIe 4.0 8x card. A B450 board doesn’t handle PCIe 4.0, so it falls back to 3.0. Although the physical layout suggests 16x, it functions as an 8x slot in 3.0 mode. It operates as expected, though performance isn’t ideal. The only solution is upgrading to a B550/X570 board. AMD Radeon RX 6650 XT Details | TechPowerUp GPU Database Bus Interface PCIe 4.0 x8
Hello, Your system remains stuck at x8. The Link State Power Management feature is turned off in Power Options.
RX 7600 and 4060ti represent the latest models. The 4060ti has been added because Nvidia is essentially offering a similar silicon package to the older RTX 3050 8GB, which also had only an 8x interface. Shader usage stands at 23.8%, nearly matching the maximum bin size of the xx102 dies, showing they are quite similar in physical dimensions.
Some time ago, manufacturers attempted to implement PCIe 4.0 on B450 and Ryzen 3000 series processors. Certain motherboards supported UEFI functionality, though these solutions were often removed or fixed due to issues. You might locate a compatible board on MSI’s site, but I wouldn’t suggest trying it yourself. Exhibit 1: