That's what I use. You can also use AMD's OverDrive (AOD) utility, and one of the tabs will give you temp and fan speeds, plus a ton more information. You can download it from AMD's website:http://game.amd.com/it-it/drivers_overdrive.aspx
I use the above mentioned app and also SpeedFan for when I am interested in only fan speeds and temp.
Also, you might want to look in to a good sidebar gadget. Not familiar with one that gives realtime fan info, but it could be out there.