Phoronix

AMD EPYC Turin 128 Core Comparison: EPYC 9745 "Zen 5C" Vs. EPYC 9755 "Zen 5"

AMD’s EPYC 9755 and EPYC 9745 are both 128‑core Turin processors, but the 9755 uses full‑fat Zen 5 cores at 500 W TDP while the 9745 packs dense Zen 5C cores into a 400 W (or 320 W cTDP) package. The 9755 clocks higher (2.1 GHz base, 4.1 GHz boost) and carries 512 MB L3 cache, whereas the 9745 runs at 2.4 GHz base, 3.7 GHz boost and 256 MB L3. Benchmarks from Phoronix show the 9745 delivering comparable performance per watt, making it attractive for power‑constrained servers. Both CPUs retail around $7,200, positioning them as direct competitors in the high‑density data‑center market.