Overclocking

To find the maximum overclock of our card we used a combination of ATITool's successor 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 final overclocks of our card are 735 MHz core (5% overclock, 16% over reference clocks) and 1305 MHz Memory (8% overclock, 15% over reference). The overclock over the stock frequencies is nice but not that impressive. When looking at the clocks from a reference design perspective they look much better. 15% without any tweaking is really nice and will ensure another performance boost.

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 is 4.2%, 13% over reference.

Temperatures

Idle temperatures of the Inno3D GTX 275 OC are comfortably low. The load temperatures are at what I would consider a safe maximum. As you saw on our noise testing page, the fan is already running really fast which means the thermal capacity of the cooler is pretty much maxxed out.