Chipset Radeon HD 7770 Digital max resolution 2560 x 1600 Analog max resolution 2048 x 1536 Process Technology 28 nm PCB Form ATX Core Clock 1050 MHz Memory Clock 4500 MHz Memory Size 1 GB Memory Bus 128 bit Card Bus PCI-E 3.0 Memory Type GDDR5 DirectX 11 OpenGL 4.2 Multi-view 4 I/O HDMI * 1 DVI-I * 1 mini DisplayPort * 2 Card size H=41.5 mm, L=212 mm, W=136.5 mm Power requirement 450 W