The comparison is to SMHasher's CRC32 implementation, which is simple but slow, forked from zlib some time ago. SIMD CRC32 implementations can be more than 14x

The comparison is to SMHasher's CRC32 implementation, which is simple but slow, forked from zlib some time ago. SIMD CRC32 implementations can be more than 14x faster than recent zlib's. I dropped some details as comments on the original blog post.