not to overtake this guys thread but speaking of cache..  my MDD as stated is a dual 867 with 1mb L3 per cpu vs. 2mb on the higher models.  think i'm still better off with 2mb total L3?
Mac mini C2D 1.83GHz - 2GB RAM - 200GB 7200rpm HD
Sawtooth w/G4 1GHz - 1GB RAM - SIIG SATA w/2x1TB HD
B&W w/G4 600MHz - 1GB RAM - 2x80GB HD
Sawtooth G4 400MHz - 512MB RAM - 40GB HD
Dell Ultrasharp 2007WFP 20" Widescreen LCD
2.94TB Total Storage