Pentium M Celerons:
Banias-512
This Celeron (sold under the Celeron M brand) is based on the Pentium M , and differs from its parent in that it has half the L2 cache, and does not support the clock-varying SpeedStep technology. It performs reasonably well compared to the Pentium M, but battery life is noticeably shorter on a Celeron M–based notebook than it is on a comparable Pentium M notebook.
The Celeron M processor is not considered to be part of the Centrino platform, regardless of what chipset and Wi-Fi components are used.
Dothan-1024
A 90 nm Celeron M with half of the L2 cache of the 90 nm (Dothan) Pentium Ms (twice the L2 cache of the 130nm Celeron Ms, though), and, like its predecessor, lacking SpeedStep.
Shelton (aka Banias-0)
The Shelton core is a Banias core without any L2 cache, and without SpeedStep. It is used in Intel's small form factor D845GVSH motherboard, intended for Asian and South American markets. The processor identifies itself as a "Intel Celeron 1.0B GHz ", to differentiate it from the previous Coppermine-128 and "Tualeron" 1.0 GHz processors
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CELERON M:
Celeron-M is not the traditional Celeron. It inherits all the new innovations done to Pentium M which, includes Enhanced Branch Prediction, deeper pipeline, optimized 400MHz Front side bus and Dedicated Stack Engine, and more. These are all new stuff.
Do not under-estimate the Celeron M, It's the same as a Pentium M (processor of choice for centrino) with less cache and perhaps burns a little bit more power than the Pentium M. But for the savings you get, you are getting a new generation chipset with awesome power.
Some analyst feel Celeron M should not be branded as "Celeron" because it will probably win the "low-power" CPU competition too easily and that it's really initially produced as a full-power Pentium M.
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