The chaps over at Raven Software just fired this through. Its the Singularity recommended system requirements.

Singularity is a highly anticipated time warping FPS thats out at the end of the month.

Singularity Minimum System Requirements
CPU: Intel Pentium D (dual core) 2.8GHz or AMD Athlon X2 4800+ or better
RAM: 1 GB of RAM
VGA: 3D hardware accelerator card required - 100% DirectX 9.0c-compliant 256 MB video card and drivers* (ATI Radeon X1800, 256 RAM)
DX: DirectX 9.0c
OS: Windows XP/Vista/Windows 7 (Does not support Windows 2000)
HDD: 8 GB of uncompressed hard disk space (plus 400 MB for the Windows® swap file and 12 KB free for saved games)

Singularity Recommended System Requirements
CPU: Intel Core2 Duo E8400 and or AMD Athlon 64 X2 6000+

RAM: 2 GB of RAM

VGA: NVIDIA GeForce 8800 GT, ATI Radeon HD 3850

Controller: Xbox 360 Controller for Windows

Note: *Supported Chipsets for Windows XP All NVIDIA GeForce 8800 GT 256 MB RAM and better chipsets (excluding GeForce 9400) All ATI Radeon X1800 256 MB RAM and better chipsets (excluding X1800 GTO, Radeon HD2400, Radeon HD2600, and Radeon HD3450) Motherboard integrated video chipsets not supported

Important Note: Some 3D accelerator cards with the chipsets listed here may not be compatible with the 3D acceleration features utilized by Singularity. Please refer to your hardware manufacturer for 100% DirectX 9.0c compatibility.