SIMD - compressing has gotten faster, but (assuming OP is correct rather than just missing info) the reference algorithm didn't have room to take advantage of SIMD. The relevant improvements since 2010 or so mostly look like bandwidth improvements not latency, and coincide with increasing ubiquity of SIMD instructions and SIMD-friendly algorithms.

> Can you explain how to square that with the link saying compressing data hasn't gotten any faster since 2005?

Compression may be bottlenecked by ram (L2 or L3 cache) access speed, or maybe even dram (main memory) access speed.

That wouldn't make sense - compression has very cache-friendly access patterns, and would benefit greatly from the observed improvements in memory bandwidth.

That surprises me to hear. I would expect it to jump around in ram a lot. And at higher compression settings, some compressors use a lot of ram, more than will fit in cache.

I have an i7-3770k and an i9-12900k sitting here. Do you know of a benchmark I could run myself that would give me the same results on both CPUs?

sleep 1?