Asus Nvidia GT640-2GD3

Graphics Engine
NVIDIA GeForce GT 640
Bus Standard
PCI Express 3.0
Video Memory
DDR3 2GB
Engine Clock
901 MHz
Memory Clock
1782 MHz ( DDR3 )
Memory Interface
128-bit
Resolution
D-Sub Max Resolution : 2048x1536
DVI Max Resolution : 2560x1600
Interface
D-Sub Output : Yes x 1 
DVI Output : Yes x 2 (DVI-D)
HDMI Output : Yes x 1 
HDCP Support : Yes
Power Consumption
up to 75Wno additional PCIe power required
Software
ASUS Driver& Utilities
GPU Tweak
ASUS Features
Fan Sink 
Super Alloy Power
Dimensions
8.27 " x 4.92 " Inch
Note
● No UEFI support.
* No native UEFI BIOS support, for UEFI BIOS, please download from ASUS technique support site. (The update tool only for ASUS MB.)