Clock Speeds
For this test, we first let the card sit in idle to reach thermal equilibrium. Next, we start a constant 100% gaming load, recording several important parameters while the test is running. This shows you the thermal behavior of the card and how the fans ramp up as temperatures increase. Once temperatures are stable (no increase for two minutes), we stop the load and record how the card cools down over time.
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 is used in those states.
| GPU Clock | Memory Clock | GPU Voltage |
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Desktop | 300 MHz | 400 MHz | 0.750 V |
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Multi-Monitor | 909 MHz | 2000 MHz | 0.944 V |
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Blu-ray Playback | 318 MHz | 400 MHz | 0.800 V |
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3D Load | 1560 MHz | 2000 MHz | 1.119 V |
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