AMD Radeon HD 6670 Video Card Review

The AMD Radeon HD 6670 (Cont’d)

In Figure 4, you can see the video card with its cooler removed. It uses only solid capacitors and ferrite-core coils (which makes the regulator present higher efficiency because they present lower energy loss than iron-core coils). The voltage regulator circuit has two phases for the graphics chip and one phase for the memory chips.

Figure 4: Video card with the cooler removed

The GPU heatsink can be seen in Figures 5 and 6. It has a copper base, aluminum fins, and a 45 mm fan.

Figure 5: The GPU heatsink

Figure 6: The GPU heatsink

The Radeon HD 6670 reference model uses four 2 Gbit GDDR5 memory chips, making its 1 GB memory (2 Gbit x 4 = 1 GB). The chips used are H5GQ2H24MFR-T2C parts from Hynix, which support up to 2.5 GHz (5 GHz DDR), and since on this video card memory is accessed at 2 GHz (4 GHz DDR), there is still a huge 25% margin for you to increase the memory clock rate while keeping the chips inside the maximum they support. Of course you can always try to overclock the memory chips above their specs.

Figure 7: Memory chips

Before seeing the performance results, let’s recap the main features of this video card.