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 10 months ago by cm0002@lemmy.cafe to c/gpu@programming.dev

1 comments fedilink hide all child comments

top 1 comments

sorted by: hot top controversial new old

[-] insomniac_lemon@lemmy.cafe 1 points 10 months 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).

this post was submitted on 04 Jul 2025

4 points (100.0% liked)

GPU

129 readers

2 users here now

GPU - 3D graphics programming, neural networks, WebGL, WebGPU, WebNN, shaders, generative textures and models, OpenGL, DirectX, Metal, Vulkan, Computer Generated Holography

founded 2 years ago

MODERATORS

Pawel@programming.dev

cm0002@programming.dev