AMD Radeon HD 7990 6 GB Review 156

AMD Radeon HD 7990 6 GB Review

Value & Conclusion »

Temperatures



Temperatures are good and seem to be well-tuned to the card's heat output through the cooler's heat-dissipation capabilities, while also keeping fan speed as low as possible.

GPU Temperature Comparison
IdleLoad
HD 799042°C / 42°C80°C / 76°C
ASUS ARES II27°C / 27°C53°C / 50°C
ASUS HD 7970 Matrix39°C70°C
Sapphire HD 7970 Toxic36°C71°C
AMD HD 7970 GHz40°C83°C
NVIDIA GTX 69035°C81°C
NVIDIA GTX Titan30°C81°C
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)
Desktop300 MHz150 MHz0.85 V
Multi-Monitor501 MHz1500 MHz0.95 V
Blu-ray Playback501 MHz1500 MHz0.95 V
3D Load1000 MHz1500 MHz1.20 V

The second GPU runs the same clocks and voltages, but is in ZeroCore mode in both single-monitor and multi-monitor mode, and with Blu-ray.

CCC Overdrive Limits
Core1100 MHz
Memory1575 MHz
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