GIGABYTE GV-N660OC-3GD, GeForce GTX 660, 3 GB, GDDR5, 192 bit, 4096 x 2160 pixels, PCI Express 3.0 GIGABYTE GV-N660OC-3GD. Graphics processor family: NVIDIA, Graphics processor: GeForce GTX 660, Processor frequency: 1033 MHz. Discrete graphics card memory: 3 GB, Graphics card memory type: GDDR5, Memory bus: 192 bit, Memory clock speed: 6008 MHz. Maximum resolution: 4096 x 2160 pixels. DirectX version: 11.2, OpenGL version: 4.4, Dual Link DVI. Interface type: PCI Express 3.0. Cooling type: Active, Number of fans: 2 fan(s)