I just did my first overclock today on a Intel Q6600 (after doing a lot of reading on the subject on how to setup the Bios settings).
Here is a chart showing Temp as I increased FSB speed.
Core Speed 2394Mhz CoreTemp 54C
Core Speed 2484Mhz CoreTemp 56C
Core Speed 2574Mhz CoreTemp 58C
Core Speed 2664Mhz CoreTemp 60C
Core Speed 2754Mhz CoreTemp 65C
Core Speed 2844Mhz CoreTemp 68C
Core Speed 2934Mhz CoreTemp 68C
Core Speed 2997Mhz CoreTemp 70C
The temperatures were taken with Core Temp while the computer was under stress with IntelBurnTest. My CPU is cooled by a CORSAIR Cooling Hydro Series CWCH50-1. CPU voltage was left on AUTO. It read about 1.36 volts when idle.
The last setting of 2997Mhz runs pretty hot under load, but when I am using the computer under normal circumstances it never goes over 50C.
I am a little disappointed with my CORSAIR cooler. I thought it would work better than it did. Others have gotten better results.
My question is, where is the upper limit for temperature for a CPU under stress during testing with IntelBurn Test?
70C seems hot to me, but as I said, the CPU never goes over 50C during normal use.