Shootouts

Mainstream Attack - The ATI Radeon HD 5770

By Kenny Yeo - 13 Oct 2009

Temperature, Power Consumption and Overclocking

Temperature

While its performance thus far might be just a tad disappointing, its operating temperature of 68 degrees Celsius is actually quite commendable given that the Radeon HD 4870, its closest match, recording a lava-hot 84 degrees Celsius. In fact, as the graph shows, it is the coolest card here of the competitive comparison.

Power Consumption

As the graph shows, power consumption figures of the new Radeon HD 5770 is excellent. They were by far the most power efficient cards, with idle and peak recordings lower than even the Radeon HD 4850. In fact, the Radeon HD 5770's power consumption figures rival that of a GeForce 9800 GT. Of all the cards here, the Radeon HD 5770 is without doubt the one offering the best performance per watt ratio.

Overclocking

We had mixed results with the two Radeon HD 5770 cards. On the PowerColor card, we could only manage a conservative 900MHz at the core and 5200 MHz DDR at the memory before the card could no longer work reliably. This gave us 4514 3DMarks, a 5% improvement in performance.

On the HIS Radeon HD 5770, however, we managed to achieve 960MHz at the core (the highest ATI Overdrive would allow us) and a stratospheric 5520MHz DDR at the memory. On the Extreme preset, this gave us 4730 3DMarks, representing a remarkable 12% improvement in performance, on par with the Radeon HD 4890.

In light of these two contrasting results, it is difficult to comment on the willingness of the Radeon HD 5770 to overclock, but there is some room no doubt.

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