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milo20
Adept I

PCIe x16 running at x8 instead - any solutions?

In the AMD Radeon Software, the GPU is set at PCIe x8 but it's inserted into the PCIe x16 slot. Is there any correlation with the Ryzen 7 2700x or can I set it up through BIOS or any other way? My motherboard is Aorus B450 Pro.

Thank you.

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6 Replies

Which GPU? Does your motherboard cut the PCIe bandwidth if other slots or connectors are in use? Is your BIOS set to use PCIE x16_1 at x16 Generation 3.0?

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GPU Radeon RX 5500 XT 4GB OC 

Probably it does but I don't use any other slots for GPU and I also don't use any M.2 

I found PCIe settings in BIOS and it's set on auto, I have other options which are Gen1 Gen2 Gen4 Gen4

EDIT: My GPU's card bus is PCIe 4.0 but my motherboard only supports PCIe 3.0. Could that have any correlation?

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The 5500XT (Navi 14) only has 8 PCIe lanes, so it is normal that it is running at x8.

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I didn't know that, thank you for the answer.

Cheers.

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Earnhardt
Grandmaster

Or are you running an M.2 SSD? depending on the slot,It may also cut it down to X8

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I don't have an M.2 SSD in my computer, thank you for the possibility though.

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