Today we will be looking at the big brother of AMD’s Cape Verde architecture, the HD 7770. This time its HIS that was kind enough to send a sample to be punished by our review staff. The HIS HD 7770 GHz Edition comes in with more shaders and a much higher clock speed (1GHz, hence the name!) than its little brother the HIS HD 7750. Let’s take a more detailed look at the card and see just how much difference it makes in these mainstream based cards.