doesnt it really depend on the CPU? you should download that MaxCaseTemp program and see what your max temp should be.. oh wait, you have an X2.. yeah, 61C is too hot, and im usually not that worried about temps (what with having my mums barton at 90C+ at one stage, just to see how hot it would get before it got unstable.. it was still perfectly stable at that temp, i just thought "ahhh, no.. shutdown time" lol)
I would drop the volts down a little bit, as they are definately the worst cause of heat in a CPU
Careface*