Overclocking

To find the maximum overclock of our card we used a combination of GPUTool and our benchmarking suite.
The overclocks listed here 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.



The overclocks of our card are 930 MHz core (33% overclock) and 1300 MHz Memory (13% overclock). Very nice overclocking here. In order to keep the heat output of the card low, PowerColor is shipping their card at reference clocks. AMD's production process seems to be churning out top GPUs that can run high clocks without problems, so if you are willing to invest some time into overclocking you can get a nice performance boost out of the card.

Overclocked Performance

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


The actual 3D performance gained from overclocking is 23.7%.

Temperatures

Temperatures are in a safe range and have enough headroom for the card to be jammed into a low ventilation media PC case.

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 major performance scenarios and the GPU voltage that we measured. We measure on the pins of a coil or capacitor near the GPU voltage regulator.