Gigabyte GV-R777OC-1GD. Graphics processor: Radeon HD 7770, Maximum resolution: 2560 x 1600 pixels, Graphics processor family: AMD. Graphic adapter memory: 1024 MB, Graphics adapter memory type: GDDR5-SDRAM, Memory bus: 128 bit. Interface type: PCI Express 2.1. OpenGL version: 4.2. Minimum system power supply: 450 W