TForge 0.67 adds SHA-256 algorithm BASM optimization (applies also to SHA-224 which is based on SHA-256). Now the library contains BASM-optimized implementations of MD5, SHA1, SHA224 and SHA256 algorithms for Win32 and Win64 platforms.
Here are some benchmarks; I measured the time required to hash 500 MB of data on my laptop (Win7 64-bits, Intel Core i3 CPU) in milliseconds. Both Pascal and BASM implementations use fully unrolled compression routines. I used default compiler settings.
32-bit compiler (Delphi XE):
64-bit compiler (FPC 2.6.2):