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

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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 4 weeks ago by cm0002@lemmy.cafe to c/gpu@programming.dev

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[–] insomniac_lemon@lemmy.cafe 1 points 4 weeks 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).