70°C is not overheating for GTX 560... 90°C is.
99c is the overheat point not 90c.
i cant even furmark the card, without it skyrocketing to 90 degrees from 40 degrees in like a minute....
That is the whole purpose of Furmark, that's why both AMD and Nvidia refer to it as a "Heat Virus" and IIRC don't
recommend it's use.