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Pentium M vs. Pentium 4?

Maybe it's a stupid question, but...

I'm looking for a new laptop, but I'm not sure of the difference between Pentiums M and 4. I know that M is lighter and more effecient, but I can't figure out how the GHz compare. That is, a Pentium M 1.6 GHz seems to be a lot better then a Pentium 4 1.6 GHz. Can anyone clarify how I can compare the two based on the numbers?


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definately a Pentium M

In reply to: Pentium M vs. Pentium 4?

aside from faster performance than the P4, it only consumes 25-ish watts of power and gets good battery life w/o overheating. The P4 consumes battery and gets extremely hot. (up to 140F in some cases!)

Personally I think you should look at the Turion 64 chip as well. Good battery life and performance plus 64-bit support for future proofing.

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In reply to: definately a Pentium M

How do I compare the specs on them? They seem to use different standards... That is, 1.6 GHz is not the same speed on both processors.

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In reply to: Comparison?

Double it. That's the simplest comparison, though it's actually slightly less than that. My 2.0 P-M is roughly equal to a 3.65 or 3.7 Ghz P4. But it's lighter and cooler, so that's an additional plus to consider.

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In reply to: Pentium M vs. Pentium 4?

I'm in the same dilema, i'm looking for a new lap top, and i dont understand the difference between the pentium m and the pentium four, i am also looking for reccomendations on notebooks under 1000$. If you have and idea on what i should buy you can email me at Thanks.

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Pentium 4-M

In reply to: Notebook

I'm also looking at new laptops. I saw the Toshiba P-35 which uses a Pentium 4 or Pentium 4-M. How does the Pentium 4-M compare to the Pentium M? Does it still make more heat and less battery life? I'm guessing it's between Pentium 4 and M, right?

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