While Sapphire and HIS release the versions radeon HD 4770 with the cooling systems from their own development, gigabyte company decided to release a video card with the doubled memory capacity - 1 GB GDDR5.
New model obtained the designation GV-R477UD-1GI. It is characterized by regular frequencies 750 MHz for GPU and 3200 MHz for the memory, it has 640 stream processors, 128- bit bus memory and supports the regime crossFireX.
In Europe the version with 1 GB memory costs about 117 Euros, which is 30 Euros more expensive than the version with 512 MB memory.