PowerColor LCS HD7970 3GB Reviewccokeman -
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Temperature testing will be accomplished by loading the video card to 100% using Unigine's Heaven Benchmark Version 2.5, with MSI's Afterburner overclocking utility for temperature monitoring. I will be using a resolution of 1920x1200 using 8xAA and a five-run sequence to run the test, ensuring that the maximum thermal threshold is reached. The fan speed will be left in the control of the driver package and video card's BIOS for the stock load test, with the fan moved to 100% to see the best possible cooling scenario for the overclocked load test. The idle test will involve a 20-minute cool-down, with the fan speeds left on automatic in the stock speed testing and bumped up to 100% when running overclocked.
- Monitoring with MSI Afterburner
- Unigine Heaven 2.5 1920x1200 8x AA
- 5-run sequence
- 20-minute idle duration
- Temperature measured in degrees Celsius
Lower = Better
As a liquid-cooled video card, the LCS HD 7970 from PowerColor delivers excellent thermal performance without adding an additional thermal load to the airflow inside the chassis. By discharging the thermal load outside the chassis via a radiator, the temperatures inside the chassis stabilize at a lower level than the XFX Dual Dissipation card. The slightly higher idle numbers are due to the card in a combined CPU/GPU liquid loop. Under load, the payoff for a liquid-cooled video card is clearly evident with load temperatures maxing out at 44 ºC despite a very healthy overclock.