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How to compare laptop's CPU speed to desktop's

by PizzaGuy / April 11, 2005 5:59 AM PDT

I noticed that the processor speed used in most laptops are slower than those of desktop's, are they actually slower or are they in different category and cannot just compare the numbers?

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Just noting.
by R. Proffitt Forum moderator / April 11, 2005 7:30 AM PDT

One has never been able to compare MHz to MHz or GHz to GHz. You'll have to use BENCHMARKS and decide if the benchmark applies to your need.


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Still not convinced.
by PizzaGuy / April 11, 2005 2:02 PM PDT
In reply to: Just noting.

I understand that we can't just compare the numbers, I just want to have a rough idea of comparing the CPU power, so that I can decide which one to buy. Say for example, a Toshiba M40-YP3 with Intel Centrino 750 at 1.86GHz and a Toshiba Satellite A70-AB2 Intel Pentium 4 548 with 3.33 GHz, are they of the same class? Is a Centrino processor superior than a Pentium 4 so that a lower speed Centrino processor is already equivalent to that of Pentium 4?

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The rough guide.
by R. Proffitt Forum moderator / April 11, 2005 9:23 PM PDT
In reply to: Still not convinced.

Take the GHz of a Centrino and double it to get a rough idea of the equivilent P4 (not-HT) speed. P4 HT speeds and those with EM64T or DUAL CORE will be tough to compare on a GHz clock rate, but for Centrino I found the 2X rule of thumb to be very close.

If the Centrino has dedicated RAM for video, it does better than one with shared RAM.


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Thanks, this is exactly what I need to know
by PizzaGuy / April 12, 2005 1:26 AM PDT
In reply to: The rough guide.

Thanks a lot, this is exactly what I need to know.

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