Windows
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 Download Size:772MB 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 and http://www.rockstargames.com/support 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).