Overclocking

The overclocks listed in this section were achieved with the default fan and voltage settings as defined in the VGA BIOS. Please note that every single sample overclocks differently, that's why our results here can only serve as a guideline for what you can expect from your card.



Maximum stable clocks of our card are 1135 MHz core (14% overclock) and 1510 MHz Memory (34% overclock).

Overclocking is decent, yet at the lower end of the spectrum we have seen on the cards tested today. I'd say a typical overclock is about 1150 MHz core and 1600 MHz memory, so PowerColor's card sits a bit below that.

Overclocked Performance

Using these clock frequencies we ran a quick test of Call of Duty 4 to evaluate the gains from overclocking.


Actual 3D performance gained from overclocking is 16.6%.

Temperatures

Temperatures are great and have plenty headroom for overclocking. Seeing 29°C during idle makes me wonder why PowerColor didn't reduce the fan speed in idle to make the card quieter, like the other manufacturers.

Clock Profiles

Modern graphics cards have several clock profiles that are selected to balance power draw and performance requirements.
The following table lists the clock settings for important performance scenarios and the GPU voltage that we measured. We measure on the pins of a coil or capacitor near the GPU voltage regulator.