OS: Windows 7 32/64 Service Pack 1, Windows Vista 32/64 Service Pack 2, Windows XP 32/64 Service Pack 3 Processor: Intel Dual Core 2.4 GHZ -  i7 3930K 6 Core  x 3.06 GHZ / AMD Dual Core 2.6 GHZ - FX8150 8 Core x 3.6 GHZ Memory: 2GB - 16GB Hard Disk Space: 35 Gigs Video Card: NVIDIA® 8600 GT 512MB VRAM – NVIDIA® GeForce® GTX 680 2GB VRAM / Radeon HD 3400 512MB VRAM - Radeon HD 7970 3GB VRAM Sound Card: 100% Direct X 9.0 compatible – Direct X 9.0 compatible supporting Dolby Digital Live Additional:Please refer to your hardware manufacturer for current compatibility information. Some system components such as mobile chipsets, Integrated, and AGP graphics cards may be incompatible. Unlisted specifications may not be supported by publisher. Other Requirements: Initial activation requires internet connection and a valid Rockstar Social Club account (13+ to register); Online play requires log-in to Rockstar Social Club (13+); software installation required including GameShield IronWrap; DirectX and Microsoft Visual C++ 2008 SP1 Redistributable Package (x86).