I have several config's running Abyss...
My Home Server:
Intel Celeron 2.13GHz, 512MB RAM, 40GB, 80GB, 200GB, 250GB, 2x500GB HD's, Windows XP SP2, Abyss X2
My Desktop PC:
Intel Core2Duo E6750 2.66GHz, 4GB RAM, 2x80GB HD RAID0, Windows Vista Ultimate x64 SP1, Abyss X1
My Laptop:
Intel Core2Duo E5250 1.66GHz, 2GB RAM, 120GB HD, Windows XP SP2, Abyss X1
My Dedicated Server:
Intel Pentium 4 HT 3.06GHz, 2GB RAM, 750GB HD, Windows Server 2003 Web Edition, Abyss X2