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 930 MHz core (13% overclock) and 1260 MHz Memory (10% overclock).
Both overclocks are relatively small and nowhere near what we have seen from other cards of the Radeon HD 7000 Series. It seems that HD 7750 is generally not overclocking so well. Another point to consider is that performance gains from overclocking are comparatively small, down to a point where overclocking might simply not be worth the extra trouble.
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 2.1%.
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.
| Core Clock | Memory Clock | GPU Voltage (measured) |
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Desktop | 300 MHz | 150 MHz | 0.82 V |
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Multi-Monitor | 300 MHz | 1150 MHz | 0.96 V |
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Blu-ray Playback | 820 MHz | 1150 MHz | 1.04 V |
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3D Load | 820 MHz | 1150 MHz | 1.08 V |
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CCC Overdrive Limits |
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Core | 900 MHz |
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Memory | 1300 MHz |
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