PCIe 5.0 X16 Riser Cable Right Angle Left Angle Straight Flexible Bundle Cable for AI Server 50-60 CM Length Black and White (Black, Left Angle 60cm)

Agree, cable quality is important and length should be as short as possible. I recently replaced a Lian-Li 600mm PCIe 4.0 riser cable (ribbon style) because I was getting a large number of PCIe errors (as reported by HWINFO64) even though it was still working because of PCIe error recovery. I replaced it with a 600mm GIGA-MEGA PCIe 5.0 X16 Riser Cable (https://a.co/d/0jhWLKCz) which is working without any PCIe errors at PCIe 4.0 speeds - I haven't tested it at PCIe 5.0 speeds due to lack of GPU. The alternative to riser cables is to use something like the LR-Link PCIe re-timer or switch adapters with SFF-8654 cables.