AMD EPYC 9005 (Turin)
The 192-core x86 host CPU under a large share of the world's GPU nodes.
You're looking at a chip record: what this processor is, its key specs, who designs, manufactures and supplies its parts, and where it gets used.
Fifth-generation EPYC scales to 192 Zen 5c cores and 12-channel DDR5. In AI clusters its job is host duty — feeding accelerators, running dataloaders and storage stacks — where AMD's core counts and PCIe 5.0 lane counts made it the default choice for many H100/MI300 platforms.
Specifications & key facts
Each figure is labeled by basis: vendor spec, vendor claim, reported, estimate, or official. "Not publicly disclosed" means exactly that — we never invent values.
Overview
Physical
How this connects to the rest of the stack
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Designed by
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Competes with
Sources
Record reviewed as of 2026-01-15 — see Methodology.