AMD HD7770 & HD7750 Roundup: Sapphire, XFX and HIS

The tests were performed in a controlled air conditioned room with temperatures maintained at a constant 24c – a comfortable environment for the majority of people reading this.

Idle temperatures were measured after sitting at the desktop for 30 minutes. Load measurements were acquired by playing Crysis Warhead for 30 minutes and measuring the peak temperature. We also have included Furmark results, recording maximum temperatures throughout a 30 minute stress test. All fan settings were left on automatic.

The AMD HD7750 reference board manages to maintain a 76c limit when loaded with Furmark, the synthetic stress test. This drops to 68c when gaming. The XFX HD7750 Black Edition has the most capable cooler in that specific range, dropping temperatures to 52c when gaming – a commendable result.

The tiny fan on the Sapphire HD7750 low profile card doesn't spin that quickly although the modest clock speeds and low voltage keep temperatures down to 61c when gaming.

The surprise result of the test was the HIS HD7770 GHZ Ed IceQ X, which peaked at 79c when gaming. This is higher than we would like, but we would assume that HIS have upped the voltage a little to maintain stability at the greatly enhanced clock speeds.

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