Sapphire Toxic HD 5970 4GB Reviewccokeman -
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Temperature testing will be accomplished by loading the video card to 100% using the MSI Kombuster utility that 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 cards BIOS for the first test with the fan moved to 100% to see the best possible cooling scenario. 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
- 15 minute idle duration
- Temperature Measured in degrees Celsius
Lower = Better
When it comes to cooling a dual GPU card, you are going to see higher temperatures from the hardware based on how the fan and heatsink are arranged. The 2GB model from Sapphire, as well as the rest of the reference designs, use a Vapor chamber equipped heatsink that can dissipate up to 400 watts of GPU load. Sapphire has gone outside the box with the use of Arctic Cooling's Accelero Xtreme 5970 cooling. The Toxic delivers great temps with the idle temperature at 30°C and the load at 67°C which is a full 19° cooler than the 2GB card when the fan speed is at 100%. Impressive! Even when you bump up the voltage, the cooler still delivers better thermals than the reference cooling solution by 8°C without the noise generated by the reference solution.