GV-R577SO-1GD  
Powered by ATI Radeon HD 5770 SOC Edition
‧GIGABYTE GPU Gauntlet™ Sorting Technology
‧Core Clock: 900MHz (std:850) / Memory Clock: 4800MHz
‧Integrated with 1024 MB / 128-bit GDDR5 video memory
‧GIGABYTE Ultra Durable VGA High Quality Components
‧GIGABYTE OC Guru – Graphic Card Smart Tuner
‧GIGABYTE OC Guru – Graphic Card Smart Tuner
‧13% better performance than standard HD 5770
‧4.3% better performance than standard GTX 260