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Question

MSI RX 480 not recognized in x16 port runs horrible on x8

Jun 12, 2017 5:53PM PDT

After I rmad my mobo due to bios issues and audio problems, I got it back, installed it, and now it won't recognize the GPU in the PCI-E x16 lane. It also performs horribly in the x8 lane, but it's detected there. By horribly I mean low fps (4 or 5) opening chrome tabs or going to start.

Discussion is locked

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Answer
Specs
Jun 12, 2017 5:56PM PDT

MOBO: Gigabyte z170x Gaming 6
CPU: Intel Core i7 6700k
RAM: G. Skill TridentZ 32gb 3200mhz (clocked at 2133 for now)
GPU: MSI RX 480 8gb
PSU: Corsair cx550m

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Sounds like a warranty issue.
Jun 12, 2017 6:05PM PDT

They should have you check BIOS versions before a return.