XFX & Sapphire HD 7950 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
Equipped with the Double Dissipation cooling system, the XFX HD 7950 Black Edition delivered excellent cooling performance at stock speeds, The Sapphire HD 7950 delivered even better cooling with its large dual-fan heat sink by 13 ºC — a significant point of difference that translates at overclocked speeds as well with the Sapphire cooling solution being a full 6 ºC better under load. Cranking the voltage up on both cards shows that the additional voltage is having an impact as both dump a large portion of the thermal load into the chassis to be recycled as the now warmer cooling air in the chassis.