B650E Steel Legend PCIe 4.0 x8 instead of x16 |
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Senac
Newbie Joined: 22 Feb 2023 Status: Offline Points: 85 |
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Posted: 27 Feb 2023 at 5:32pm |
Hi. I have a question. On the B650E Steel Legend board, are the PCIe Gen5 lines for the top PCIe 5 x16 slot shared with the Blazing M.2 socket (M2_1, Key M). Currently, I have a GPU connected to PCIE1 and a bootable NVMe drive connected to the Blazing M.2 socket. For the GPU, I have PCIe 4.0 set to x8 instead of x16.
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eccential
Senior Member Joined: 10 Oct 2022 Location: Nevada Status: Offline Points: 4330 |
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No. AM5 CPU has 28 lanes, 4 of which are used to connect to the chipset.
16 lanes to PCIe slot1 4 lanes to PCIe slot2 4 lanes to M2_1 ---------------------- 24 total And 4 more to the chipset, as mentioned already. What GPU? Some lower end GPUs only have 8 lanes, like RX-6600*, RX-5500*, RTX-3050, etc. But there was another thread talking about the same issue. Some fixed with reseating the CPU, another fixed with a replacement CPU. I don't remember if there was other solutions. |
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Senac
Newbie Joined: 22 Feb 2023 Status: Offline Points: 85 |
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RX-6800XT. Thank you for your reply. So one possibility is already ruled out. I will try reseating the GPU and CPU.
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Senac
Newbie Joined: 22 Feb 2023 Status: Offline Points: 85 |
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Looks like the problem is solved, reseating the GPU helped. It was apparently not pressed down enough before.
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eccential
Senior Member Joined: 10 Oct 2022 Location: Nevada Status: Offline Points: 4330 |
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Good to hear. These modern connectors are doing a lot, because the signal rate is so high. I also had a problem some months ago where cleaning the connector contacts with alcohol fixed it. I'm much more careful about not touching any exposed contacts these days.
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