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A detailed benchmark comparison of two AMD EPYC Turin 128-core server processors: the EPYC 9755 (Zen 5, 500W TDP) and the EPYC 9745 (Zen 5C, 400W TDP). The Zen 5C-based 9745 trades half the L3 cache (256MB vs 512MB) and lower boost clocks (3.7GHz max vs 4.1GHz) for a 100W lower TDP and optional 320W cTDP mode. Both processors are similarly priced at ~$7,200, making the 9745 primarily attractive for platforms limited to 400W TDP or workloads prioritizing power and thermal efficiency. Over 500 benchmarks were run on a Gigabyte MZ33-AR1 single-socket server to compare performance and power consumption across all three configurations.

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