CLUB3D 8600GT Passive Heatpipe 512 MB. Graphics processor: NVIDIA G84-300, Maximum resolution: 2560 x 1600 pixels, Processor front side bus: 540 MHz. Graphic adapter memory: 512 MB, Graphics adapter memory type: DDR2, Memory bus: 128 bit. Interface type: PCI Express. OpenGL version: 2.0. Compatible operating systems: Windows 2000/XP/MCE/XP64/VISTA 32bit/VISTA 64bit