Please note, this is a TechSmart shop product, and not a full TechSmart review. 

Chipset	GeForce GTX 770
Core Clock	Base / Boost clock：1137 / 1189 MHz
Memory Clock	7010 MHz
Process Technology	28 nm
Memory Size	2048MB
Memory Bus	256 bit
Card Bus	PCI-E 3.0
Memory Type	GDDR5
DirectX	11.1
OpenGL	4.3
PCB Form	ATX
Digital max resolution	4096 X 2160(via a single HDMI connector and not supported with two DVI connectors)
Analog max resolution	2048 x 1536
Multi-view	4
I/O	DVI-I*1 DVI-D*1 DisplayPort*1 HDMI*1
Card size	L=292mm W=129mm H=43mm
Power requirement	600W (with one 6-pin and one 8-pin external power connectors)