Sapphire HD 5770 FleX ReviewRHKCommander959 -
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Temperature testing will be accomplished by loading the video card to 100% using MSI Kombuster, which is paired with MSI's afterburner overclocking utility for temperature monitoring. I will be using the stability test set to a resolution of 1920x1200 using 8xAA. I will use a 15 minute time frame 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 first test, with the fan moved to 100% to see the best possible cooling scenario for overclocking. The idle test will be a 20 minute cool down with the fan speeds left on automatic.
- Monitoring with MSI Afterburner
- GPU Stability test in MSI Kombuster
- 15 minute load duration
- 20 minute idle duration
- Temperature measured in degrees Celsius
Lower = Better
Stock idle temperatures were similar for the Sapphire 5770, 5850, and 5870, and the load temperature was one of the lower results of the group. Overclocking made it so that the card could not throttle its clock speed down low as it does at stock speed and likely contributed to the heat, but at load the temperatures improved 4°C thanks to the 100% fan speed used.