Temperatures
Palit's cooler improves temperatures over the reference design, but noise levels are not improved enough to, in my opinion, justify the 2.5-slot cooler.
GPU Temperature Comparison |
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| Idle | Load |
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Palit GTX 770 JetStream | 31°C | 78°C |
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Gigabyte GTX 770 | 34°C | 76°C |
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ASUS GTX 770 DC II | 29°C | 76°C |
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NVIDIA GTX 770 | 35°C | 80°C |
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GTX 680 | 45°C | 85°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 | 135 MHz | 162 MHz | 0.85 V |
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Multi-Monitor | 135 MHz | 162 MHz | 0.85 V |
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Blu-ray Playback | 135 MHz | 162 MHz | 0.85 V |
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3D Load | 1150 - 1270 MHz | 1753 MHz | 1.075 - 1.200 V |
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The card uses NVIDIA's dynamic overclocking mechanism, which will dynamically adjust clock and voltage based on render load, temperature, and other factors.
For the graph below, we recorded all GPU clock and GPU voltage combinations of our 1920x1200 resolution benchmarking suite. The plotted points are transparent to allow them to add up to indicate more often used values. A light color means the clock/voltage combination is rarely used and a dark color means it's active a lot.