The Epic Games Forums now offer minimum and recommended system requirements for Bulletstorm, People Can Fly's upcoming first-person shooter (thanks BeyondUnreal). These specs follow.

Bulletstorm requires the following minimum configuration:

Operating System Windows XP (SP3), Windows Vista (SP2), or Windows 7
Processor Intel Core 2 Duo, AMD Athlon X2, or equivalent, running at 1.6 GHz or greater
Memory (RAM) 1.5 GB
HDD Space 9 GB available
Video Card DirectX 9.0c compatible, 256 MB of VRAM; NVIDIA GeForce 7600 GS, ATI Radeon HD 2400 Pro 256 MB, or greater
Soundcard DirectX 9.0c compatible, 16-bit
Disc Drive 16X CD/DVD Drive
Network Internet (TCP/IP) connection

The following configuration is recommended to run Bulletstorm:

Operating System Windows Vista (SP2), or Windows 7
Processor QuadCore 2.0 GHz
Memory (RAM) 2 GB
HDD Space 9 GB available
Video Card DirectX 9.0c compatible, 512MB of VRAM; NVIDIA GeForce GTX260, or ATI Radeon 4870
Soundcard DirectX 9.0c compatible, 16-bit
Disc Drive 16X CD/DVD Drive
Network Broadband Internet (TCP/IP) connection