I have an XFX Radeon HD 6870 that keeps on overheating, so I tried to use AMD Overdrive (which has worked before to change fan speeds on this card) to change the fan speed to maximum to stop the problem. The software indicates a change in speed, but physically there is no difference, and the temperature remains at around 80-100 degrees celcius.
As a side note the card is in crossfire with a Sapphire Radeon HD 6850.
As a side note the card is in crossfire with a Sapphire Radeon HD 6850.