[SOLVED] Radeon 6600XT (PCI-e 4.0x16) In my PCI-e 3.0x16 board.

[elliott.ed18]

Hey all, I recently bought a Red devil Radeon 6600xt which has a bus type of PCI-e 4.0, Now I know my board supports PCI-e 3.0 but my question is, why is my card running at 3.0x8 when my board and all research says it should run at 3.0 x16?
Is this due to my motherboard, my bios settings, both?
Any advice or answers appreciated.

Hardware mentioned:
Red Devil Radeon 6600xt
Asrock A320M Motherboard

 

[renz496]

Now I know my board supports PCI-e 3.0 but my question is, why is my card running at 3.0x8

by design AMD limiting RX6600XT (physically) to x8 only. i believe this is done so they can reduce the cost on PCB. on system with PCI-E 4.0 system x8 still offering the same bandwidth as PCI-E 3.0 x16. the issue is when you were running them on PCI-E 3.0 slots. because that will limit the speed to PCI-E 3.0 x8 only. in theory GPU like RX6600 should see no issue running at PCI-E 3.0 x8. but there are condition where it can pose a problem.

 

[TommyTwoTone66]

you still get 8GB/sec on PCI-E 3.0 x8, which is more than the RX6600XT can use, so don't worry about this at all.

 

[elliott.ed18]

by design AMD limiting RX6600XT (physically) to x8 only. i believe this is done so they can reduce the cost on PCB. on system with PCI-E 4.0 system x8 still offering the same bandwidth as PCI-E 3.0 x16. the issue is when you were running them on PCI-E 3.0 slots. because that will limit the speed to PCI-E 3.0 x8 only. in theory GPU like RX6600 should see no issue running at PCI-E 3.0 x8. but there are condition where it can pose a problem.

Thanks for clearing this up, I knew there would be next to no performance loss, I was just wondering if I was doing something wrong. Thanks!