Resident Evil 5 minimal specs:
• OS: Windows XP
• CPU: Intel Pentium D / AMD Athlon 64 X2
• RAM: 1 GiByte Windows Vista / 512 MiByte Windows XP
• HDD: 8.0 GByte
• Monitor: 800 x 600 pixels
• Graphics card: 256 MiByte VRAM / Shader Model 3.0 / Nvidia Geforce 6800 / Ati Radeon HD 2400 Pro
• Input: Mouse and keyboard

Resident Evil 5 recommended specs:
• OS: Windows Vista
• CPU: Intel Core 2 Quad / AMD Phenom X4
• RAM: 2 GiByte Windows Vista / 1 GiByte Windows XP
• HDD: 8.0 GByte
• Monitor: 1,280 x 720
• Graphics card: 512 MiByte VRAM / Nvidia Geforce 9800 / Ati Radeon HD 4800
• Input: Xbox 360 Controller for Windows

http://www.nzone.com/object/nzone_re5_downloads.html