The official Games for Windows site has just been updated, with an update on the Grand Theft Auto IV page with the recommended system requirements. In order to run Grand Theft Auto IV smoothly on your Windows PC, you’ll need a computer with specifications similar to the one shown below.
Operating System: Windows XP SP2
Processor: Dual core processor (Intel Pentium D or better)
RAM: 2GB
Hard Disk Drive: 18GB free hard disk space
Video Card: 512MB Direct3D 10 compatible video card or Direct3D 9 card compatible with Shader
Optical Drive: DVD-ROM dual-layer drive
Read full news post here...