The other question I had, was how "paranoid" were you about crushing the chip's core (given that it doesn't have the protective metal thingy/ heat spreader)? Do you think it is fairly robust? Would most Socket 478 heatsinks be appropriate, do you think?
Here's an interesting article on desktop overclocking with the Pentium 4 - M:
This guy has removed a heat spreader from an old Williamette P4, and is using it to protect his P4-M (along with some sticky tape, and some thermal paste). Quite inventive.
Also, here is a useful summary of the nomenclature of Intel's Pentium $ desktop and mobile chips:
http://support.intel.com/support/proces ... 007500.htm
Mobile Intel Pentium 4 supporting hyperthreading - Have a 533 FSB. Socket 478. Range in speed up to 3.2 Ghz. These appear to have a thermal guideline similar to the desktop (standard) pentium 4. More recent chips have 1 Mb L2 cache. According to the intel spec finder, these seem to run at 1.3 or 1.5 volts (it varies), so maybe some of them are pumping out marginally less heat than the desktop variants.
Mobile Intel Pentium 4 = Have a 533 FSB. Socket 478. Range in speed from 2.4 to 3 Ghz. These appear to have a thermal guideline similar to the desktop (standard) pentium 4. These seem to run at 1.5 volts.
**Mobile Intel Pentium 4 - M = the chips we are talking about here. Run at about 30-35 Watts. Supposedly are socket 479, but fit into a socket 478. (What's the difference between the two?) Have a 400 Mhz FSB, and run stock at 1.3 Volts. Range in speed from 1.4 to 2.5 Ghz.
[Pentium 4] = standard desktop chip. Run at 1.5 volts.
IT'S VERY CONFUSING.
But at any rate, it seems like it's only the "Mobile Intel Pentium 4 - M" that would be running significantly cooler than a standard desktop Pentium 4. Does that seem right?? Or are these P4-M mobile chips pretty much the same as the other mobile P4 chips in terms of heat output, i.e., are the apparent dramatically higher higher thermal guidelines on the other mobile P4 chips (>60 Watts, compared to 30-35 Watts for the P4-M chips) are an artifact of the way the specifications are calculated?