Analysis of the EPYC 145% performance gain in Cloudflare Gen 12 servers

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This post details the performance analysis of Cloudflare's Gen 12 servers utilizing AMD EPYC 9684X (Genoa-X) processors. It compares these to other 4th generation EPYC variants (Genoa and Bergamo) and the previous generation (Milan 7713). The analysis includes results from cf_benchmark and an internal performance simulation tool, highlighting a 145% performance gain and 63% efficiency improvement with Genoa-X. Sensitivity analysis demonstrates linear scaling with core count and TDP, and significant performance gains with increased L3 cache size, indicating its critical role for Cloudflare's workload.