Macs Fan Control allows you to monitor and control almost any aspect of your computer's fans, with support for controlling fan speed, temperature sensors pane, menu-bar icon, and autostart with system option. Works on Windows as well (Boot Camp). Macs Fan Control is a software solution to noise problems such as those caused by iMac HDD replacement, or overheating problems like those found on a MacBook Pro.
What's new in version 188.8.131.52
Fixed reading of GPU temperatures
Fixed Fixed missing GPU Proximity / Heatsink sensors on some Mac models