To test the temperatures of the Sapphire Vapor X 5750 I fired up FurMark 1.70 and GPUz. Running FurMark at a resolution of 1024×768 was more than enough to bring the work load to 100%
All temperatures were taken with the fan control on auto. Starting out at 48 degrees is comparable to where the reference 5750 started out. Under full load however, is a different story. The reference card jumped up to 74 degrees while the HIS Radeon HD5750 heated up to 73 degrees; this is not a sizable difference. You can find the details on the reference card here.
Benchmark Results: To be honest I was a little bit let down when it came to the temperatures of the HIS Radeon HD5750.