These PC specs are straight from Electronic Arts:
MINIMUM
Operating System - Windows XP (SP3), Windows Vista (SP2), Windows 7
Processor - Pentium D, 3.2GHz / Core 2 Duo, 2.0GHz / Athlon 64 X2
Memory - 2GB RAM
Video Card - Video card must be 256MB or more and contain these chipsets or better: NVIDIA GeForce 7800 GT ; ATI X1900. Laptop versions of these chipsets may work but are not supported. Updates to your video and sound card drivers may be required.
HDD Space - 9GB
Soundcard - Soundcard with DirectX 9.0c compatibility
DirectX - DirectX 9.0c
Disc Drive - 8x or faster CD/DVD Drive
RECOMMENDED
Operating System - Windows Vista (SP2), Windows 7
Processor - QuadCore 2.0Ghz
Memory - 2GB RAM+
Video Card - A video card with 512MB of VRAM and one of the following chipsets: NVIDIA GeForce GTX260; ATI Raedeon 4870
HDD Space - 9GB
Soundcard - Soundcard with DirectX 10 compatibility
DirectX - DirectX 10
Disc Drive - 16X CD/DVD Drive