AMD Radeon HD 7770 GHz Edition Video Card Review
The AMD Radeon HD 7770 GHz Edition (Cont’d)
Contents
The Radeon HD 7770 GHz Edition uses a standard aluminum cooler with a 80 mm fan.
Figure 4: Video card cooler
In Figure 5, you can see the video card with its cooler removed. It uses a voltage regulator with three phases for the GPU and one phase for the memory chips. The phases for the GPU uses ferrite-core coils, but the phase for the memory uses an iron-core coil. All capacitors used on this video card are solid.
Figure 5: AMD Radeon HD 7770 GHz Edition
The reviewed video card uses four Hynix H5GQ2H24MFR-T2C GDDR5 chips, each one storing 2 Gbit of data, making the 1 GB of memory available on this video card. Each chip is connected to the GPU through a 32-bit lane, creating the 128-bit datapath that is available. These chips can run up to 5 GHz. On this video card, they are accessed at 4.5 GHz, leaving an 11% margin for you to increase the memory clock still within specifications. Of course, you can always try to push the memory clock above its specs.
Figure 6: Memory chips
Before seeing the performance results, let’s recap the main features of this video card.