423
Pegboard PC
(lemmy.world)
I designed 3D printed components to mount my ITX + 3080 + SFX to an IKEA Skadis pegboard, so it can be wall-mounted behind my TV.
3D printing details here: https://www.printables.com/model/571343-pc-mounting-kit-for-ikea-skadis-with-t-nuts
if the riser is rated for 16x you shouldn't have any slowdowns.
you can always check if the card is linked at full speed. if it's at 16x, then there's no difference.
I think OP was more concerned about latency than throughput.