Sep 0.10.0 was released April 22nd, 2025 with optimizations for AVX-512 capable CPUs like the AMD 9950X (Zen 5) and updated benchmarks including the 9950X. Sep now achieves a staggering 21 GB/s on the 9950X for the low-level CSV parsing. 🚀 Before 0.10.0, Sep achieved ~18 GB/s on 9950X. See v0.10.0 release for all changes for the release, and Sep README on GitHub for full details. In this blog post, I will dive into how .NET 9.0 machine code for AVX-512 is sub-optimal and what changes were made ...