Gigabyte GV-R928XOC-3GD Radeon R9 280X Graphics Card

Chipset: Radeon R9 280X
Digital max resolution: 4096 X 2160(via a single HDMI connector and not supported with two DVI connectors)
Analog max resolution: 2048 x 1536
Process Technology: 28 nm
PCB Form ATX
Core Clock: Base / Boost clock：1000 / 1100 MHz
Memory Clock: 6000 MHz
Memory Size: 3072 MB
Memory Bus: 384 bit
Card Bus: PCI-E 3.0
Memory Type: GDDR5
DirectX: 11.2
OpenGL: 4.3
Multi-view: 3
I/O: DVI-I / mini DisplayPort*2 / HDMI*1
Card size: L=285mm W=126mm H=38mm
Power requirement: 600W(with one 6-pin and one 8-pin external power connectors)