this post was submitted on 04 Jul 2025
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Lack of PCIe bandwidth can nerf RTX 5090 by up to 25% in content creation workloads — Puget data confirms performance hit when using older generations and fewer lanes (www.tomshardware.com)
submitted 5 days ago by [email protected] to c/[email protected]
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[–] [email protected] 1 points 5 days ago

This seems to be an issue with most new cards.

AMD because it isn't full-width PCIe connection (x8 or even x4) so you have less bandwidth on PCIe 3.0.

Intel Arc has a reliance on ResizableBAR but also some issues caused by less-new CPUs (which I assume is some graphics pipeline thing).