3. Intel Pentium-M processor speeds

from NotebookReview
by Lowlymarine

People ask, “Why on earth are Centrino processors so slow?” Well, they really aren't. The advanced mobile-optimized architecture used in Intel's newest notebook chips, the Pentium-M and the lesser Celeron-M, allows the chip to operate much more efficiently than Pentium 4s and Celeron-Ds clock for clock. Here's a rough guide for converting Pentium-M chips to their equivalent Pentium 4 cores.
Note that we're assuming that up to 4GHz non-hyperthreading Pentium 4s exist.

Celeron-Ms:
C-M 1.20GHz - 2.42GHz Celeron-D
C-M 1.30GHz - 2.60GHz C-D
C-M 1.40GHz - 2.86GHz C-D
C-M 1.50GHz - 2.93GHz C-D

Ultra-low voltage Pentium-Ms:
C-M 0.9GHz ULV - 2.0GHz Celeron-D
P-M 1.0GHz ULV - 2.0GHz Pentium 4
P-M 1.1GHz ULV - 2.2GHz P4
P-M 1.2GHz ULV - 2.4GHz P4

Alviso/Sonoma Pentium-Ms:
P-M 1.40GHz* - 2.5GHz Pentium 4
P-M 1.50GHz - 2.8GHz Pentium 4
P-M 1.60GHz - 3.0GHz P4
P-M 1.73GHz - 3.2GHz P4
P-M 1.86GHz - 3.4GHz P4
P-M 2.00GHz - 3.6GHz P4
P-M 2.13GHz - 3.8GHz P4
P-M 2.26GHz - 4.0GHz P4
*Not avaialable in an Alviso/Sonoma model; comparison uses the older Banias core.

Core Solo/Duo Pentuim-Ms:
Core Solo 1.50GHz - 2.8GHz P4
Core Solo 1.66GHz - 3.0GHz P4
Core Duo 1.66GHz - 3.2GHz Pentium 4HT
Core Duo 1.83Ghz - 3.6GHz P4HT
Core Duo 2.00GHz - 3.8GHz P4HT
Core Duo 2.16GHz - 4.0GHz P4HT

Hopefully you've noticed a pattern that can be applied as the P-M series continues. These are rough equivalences only; much as there is dispute on the P4HT vs. Athlon 64 equivalences, no one is able to agree on an exact standard for converting the Pentium-M's speed to an equivalent P4.