Asus EAH4770 Series graphics card is the entry level graphics card instead of that It have the most advanced GDDR5 memory technology combination of HD gaming performance. This is the first card in ATI to have die shrink from 55 nm to 40nm. Because of the Die Shrink clock speed is increases. It have the lower transistor count of 826 million whcih will inevitably all ATI to count production cost.

The below specification is taken from the asus official site
Graphics Engine - ATI Radeon HD 4770
Bus Standard - PCI Express 2.0
Video Memory - DDR5 512MB
Engine Clock - 750 MHz
Memory Clock - 3.2 GHz ( 800 MHz DDR5 )
Memory Interface - 128-bit
DVI Max Resolution - 2560 x 1600
D-Sub Output - Yes x 1 (via DVI to D-Sub adaptor x 1 )
DVI Output - Yes x 2 (DVI-I)
HDMI Output - Yes x 1 (via DVI to HDMI adaptor x 1 )
HDTV Output (YPbPr) - Yes
HDCP Support - Yes
Software Bundled - ASUS Utilities & Driver