Sapphire AMD/ATI HD 7770 1 GB GDDR5 Graphics Card
OR
Asus AMD/ATI Radeon HD 7770 2 GB GDDR5 Graphics Card
OR
Sapphire AMD/ATI HD 7850 1GB OC GDDR5 1 GB GDDR5 Graphics Card
Which one of these is a the best ??
OR
Asus AMD/ATI Radeon HD 7770 2 GB GDDR5 Graphics Card
OR
Sapphire AMD/ATI HD 7850 1GB OC GDDR5 1 GB GDDR5 Graphics Card
Which one of these is a the best ??