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 985 MHz core (23% overclock) and 1600 MHz Memory (42% overclock).

Memory overclocks just as well as on all other HD 7000 Series cards - very impressive.

Unfortunately overclocking the GPU does not work so well. Okay, 23% overclock is impressive, but I was hoping for the same 1.1 GHz+ that we have seen in the HD 7770 reviews, which use the same GPU. Maybe our card's GPU ended up on a HD 7750 because it didn't make the 1 GHz clock qualification required for HD 7770. This could mean that some HD 7750s could end up with golden GPUs that overclock up to 50%.

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 3.2%.

Temperatures

Temperatures are low across the board, everything good here.

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.