Its well known that the COD engine was designed with the ability to use DX 11, but was not implemented, as the game code wasn't optimized enough to use it, and there were problems with Microsofts DX11 code aswell.
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Intel core I7 950 @ 3.8
Asus PT6 Motherboard
6 gigs OCZ DDR3 1600
Asus GTX580 Direct CU II
60 gig Corsair SSD [with only COD and dual boot OP system]
500 gig HHD
LG 37" LCD
MSFF2 Joystick
Cougar Throttle
Saitek Pro Rudder pedals
Voice Activation Controls
Track IR 5 ProClip