i have two systems capable of running 3D Mark '05 right now; one of which isn't Windows driven (which makes the score it came up with interesting)
System1:
AMD Athlon64 FX-53 2.7GHz 2MB Cache
PNY SLi GeForce 6600 Ultra 256MB PCI-X (16x / 280MHz / 600MHz )
Gigabyte nForce3 Pro/2
Kingston 3GB 533MHz CAS 2-1-1-8 Hyper-X
Hitachi 120GB ATA/133MHz 8MB Cache ( D:/Contained Mark 05 )
Microsoft Windows XP Professional 2002 Service Pack 2
6,235marks
System2:
AMD Athlon64 FX-51 2.2GHz 2MB Cache
IBM NV45 256MB PCI-X (16x / 450MHz / 600MHZ )
Kingston 512MB 533MHz CAS 2-1-1-8 Hyper-X
Hitachi 80GB ATA/133MHz 4MB Cache
Linux running DirectX / Windows Common Libraries natively
7,141marks
got some more tests as far as this Linux based OS is conserned as well as how much further we can take it.