Temperatures
After we fixed the mounting pressure of the cooler, the temperatures are quite decent. We heard from PowerColor that the typical load temperatures they've seen are 80°C, so our little modification improves temperatures by over 10°C!
GPU Temperature Comparison |
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| Idle | Load |
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PowerColor HD 7990 Devil 13 | 38°C / 37°C | 71°C / 65°C |
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GTX 690 | 34°C / 35°C | 80°C / 81°C |
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HD 7970 | 45°C | 78°C |
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HD 7970 GHz | 40°C | 83°C |
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Important: GPU temperature will vary depending on clock speed, voltage settings,
cooler design, and production variances. This table just serves to provide
a list of typical temperatures for similar cards determined during TPU review.
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 performed the measurement on the pins of a coil or a capacitor near the GPU voltage regulator.
| Core Clock | Memory Clock | GPU Voltage (measured) |
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Desktop | 300 MHz | 150 MHz | 0.85 V |
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Multi-Monitor | 500 MHz | 1375 MHz | 1.00 V |
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Blu-ray Playback | 501 MHz | 1375 MHz | 0.99 V |
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3D Load | 925 MHz | 1375 MHz | 1.17 V |
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CCC Overdrive Limits |
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Core | 1125 MHz |
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Memory | 1575 MHz |
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