Sapphire Radeon HD 7790 2GB OC Reviewccokeman - April 21, 2013
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Sapphire HD 7790 2GB OC Testing:
Temperature testing will be accomplished by loading the video card to 100% using Unigine's Heaven Benchmark Version 4.0, 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 4.0 1920x1080 8x AA
- 5-run sequence
- 20-minute idle duration
- Temperature measured in degrees Celsius
Looking at the cooling results shows that the HD 7790 2GB OC slips behind the dual fan-equipped cards from Sapphire and XFX at stock speeds. All three cards use a dual heat pipe design yet the HD 7790 2GB OC has a single fan and smaller fin array. However when the fan speed is pushed up to 100% the larger fan becomes the great equalizer, dropping the temperatures right on down to the level of the XFX card and within two degrees of Sapphire's Dual-X solution. Fan noise at stock speeds is negligible and can't be heard from outside the chassis. At 100% the fan is audible but not to the point of being loud.