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Originally Posted by unregistered
the thermal protection (by Intel) cuts in within cycles, literally faster than the temp response of the bp
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I was of the understanding that the cycle-reduction style of thermal-throttling offered by Intel CPU's could be disabled within the BIOS for many of the modern overclocking focussed boards. My Socket 478 P4 board is a little older and doesn't have that BIOS option, but I've been assured by many of the 3DMark overclocking fiends that they have the option in the BIOS and turn it off regularly as a matter of ensuring that they get the highest possible benchmark scores.
I was, however, more referring to critical thermal shutdown, as in 135C internal die temperatures for P4's, in that a CPU still does have sufficient time to react to critical shutdown temperatures.
For AMD, the Abit NF7-S board does offer voluntary thermal throttling of AMD CPU's through monitoring of the CPU internal diode, but it does not allow you to read what that diode is reporting. See section 4-4 of the NF7-S manual.
By far the majority of my testing is done with non-thermal-throttling AMD CPU's.