Reply 20 of 25, by Rikintosh
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Yeah, I've been reading around, and I'll bring what I learned to this topic, to help people in the future.
Apparently Intel made the traditional Pentium 4 and the P4M on the same silicon wafer, the chips that were the best and passed all the rigorous tests were the P4M, while the "junk" is the traditional desktop pentium 4. Laptop versions have speedstep which will make the desktop only recognize the lowest speedstep multiplier, for example: A 2.4Ghz pentium 4 with 200mhz fsb (400 DDR) would use the x12 multiplier to achieve this speed, but versions with speedstep, it has several multipliers, and the lowest multiplier, would be like 6x to work at 1.2Ghz, so a desktop motherboard, will immediately recognize it as 1.2Ghz, and to reach the standard speed, you will have to increase the multiplier or FSB in the bios. These processors can work flawlessly requiring very little vcore voltage (that's why they were the premium part of the silicon wafer), but that doesn't stop them from working with higher voltages. Some models could work even without a cooler due to low voltage (and low multiplier), at the same time, they can work at voltages higher than 1.6v, reaching clocks higher than 3.0Ghz.
Lucky for me, I have a 3.2Ghz Pentium 4M here, which made me eager to test it out. I hope my computer's chipset and bios don't frustrate me.
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