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PC Processors

Jeuda
Adept I
‎07-13-2023 07:14 PM

rtx4070 cant run at pci-e 4.0 on a 5900x

Recently upgraded to a rtx 4070. Setting pci-e1 to Auto or Gen 4. GPU stuck in pci-e 1.1 even with load. Currently set Gen 3, it works at pci-e 3.0. Has anyone encountered the same dilemma? Do share, thank you.

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1 Solution
Jeuda
Adept I
‎07-21-2023 02:33 AM

https://forum-en.msi.com/index.php?threads/mpg-b550-gaming-carbon-wifi.387477/

Turns out that there is nothing wrong with the 5900x, the mainboard can't swtich to x16 PCI-E 4.0 at Auto/Gen 4 mode. Changed to another mainboard solved the issue.

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3 Replies
Jeuda
Adept I
‎07-13-2023 07:21 PM

Ryzen 5900x

Corsair RMx 850W

MSI MPG B550 GAMING CARBON WIFI updated 1E bios

Both m.2 used, 3 sata drives.

Usb sbx G6 sound

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Jeuda
Adept I
‎07-21-2023 02:33 AM

https://forum-en.msi.com/index.php?threads/mpg-b550-gaming-carbon-wifi.387477/

Turns out that there is nothing wrong with the 5900x, the mainboard can't swtich to x16 PCI-E 4.0 at Auto/Gen 4 mode. Changed to another mainboard solved the issue.

Santiavi
Journeyman III
‎08-22-2024 07:18 AM

I had the same problem and I racked my brains looking for the error, I even thought it was the motherboard and I changed it from an Aorus B550m pro to an Asus B550-f and it didn't work for me, I've read in several forums and it seems that it is a persistent problem in AMD chips, the PCIe port only works in 3.0, not only with video cards but also with audio cards, until now there is no bios update that fixes this problem.

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