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 905 MHz core (17% overclock) and 1115 MHz Memory (12% overclock). Pretty nice results here, some free extra performance from overclocking is always great, even though overclocking capability is not the prime focus of this market segment.
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 14.5%.
Temperatures
Both idle and load temperatures are comfortably low, which also means there is still some headroom left to quieten down the fan some more.
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.
| Core Clock | Memory Clock | GPU Voltage (measured) |
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Desktop | 157 MHz | 300 MHz | 0.90 V |
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Blu-Ray Playback | 400MHz | 900 MHz | 1.01 V |
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3D Load | 775 MHz | 1000 MHz | 1.13 V |
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CCC Overdrive Limits |
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Core | 850 MHz |
Memory | 1050 MHz |