Sidux is a distribution based on Debian Sid. It requires a CPU of at least Pentium II class, but otherwise the requirements are not too demanding:
Intel Pentium pro/ Pentium II
AMD K7 Athlon (not K5/ K6)
VIA C3-2 (Nehemiah, not C3 Samuel or Ezra)/ C7
any x86-64/ EM64T capable CPU or newer; the full i686 command set is required.
≥192 MB RAM, ≥ 512 MB RAM for liveapt.
VGA graphics card capable of at least 640x480 pixel resolution.
optical disk drive or USB media.
≥3 GB HDD space, ≥10 GB recommended.
Merry Christmas from Finland!