Hi there, I'm resurrecting what is probably a common topic by asking what are the normal operating temperature ranges, with fan speed, for a white MacBook (mid-2009 era). Even with rather low CPU usage of 15%, temperature rarely goes over 67 degrees, but the fan spins at maximum speed, making it annoyingly noisy and defeating one purpose of having installed an SSD. But it seems there's no hard rule with this one: with Macs Fan Control set to "auto" (assuming it follows the factory settings), sometimes it goes over 70 degrees while running the fan half-speed. When I based the fan speed on the enclosure temperature, CPU temp rose much closer to my experience with i7, with 70 degrees a low-usage temperature. So what are the normal temperature ranges for the bottom enclosure and CPU diode for a MacBook5,2?