"Nevertheless, one fortunate side effect of the whole exercise, which mainly involved trying to make sense of the various overlapping ways that Intel uses the letter "M" in combination with the words "Pentium" and "Celeron", was that I began to take a closer look at the processor that's at the heart of Intel's Centrino platform: the Pentium M. Known for a while by its codename, Banias, the Pentium M represents the first "new" architecture from Intel since the P4's Netburst. But of course, the Pentium M's roots go all the way back to the Pentium Pro--it is, in fact, the latest and greatest iteration of the P6 architecture that powered every Intel processor from the PPro up to the PIII. So my newest article's look into the Pentium M's architecture is almost like a look at "what might have been," had the P6 core been extended instead of replaced by Netburst."
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Ars Technica
