About the Reference As one of the graphics card manufacturers are always remove graphics card with ATI chipsets, recently released ATI Sapphire HD 4770 them. ATI HD 4770 graphics card is the latest from ATI is using a 40 nm production process. Reliability To see this graphics card, Hardview also imposes a series of testing on this Sapphire HD 4770. ATI Sapphire HD 4770′s are still using...