Analysis of information sources in references of the Wikipedia article "Socket 479" in English language version.
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The first socket in this family was the mPGA478A called Socket 479(A) for the Tualatin core Mobile PIII-M CPUs. This socket actually had 478 pins despite being called "Socket 479." It had a 100 or 133 MHz FSB like other PIIIs…The second socket was the famous mPGA478B Socket 478 for the desktop and mobile Pentium 4s. It had a 400, 533, or 800 MHz FSB…The third socket was mPGA478C, also called Socket 479. It was for the two generations of Pentium M- Banias and Dothan. It had a 400 or 533 MHz FSB identical to the P4's bus. It again had 478 pins despite being called Socket 479…The fourth socket in the line was mPGA478MT, aka Socket M. This was used for the Core Duo/Core Solo, early Core 2 Duo mobile chips, and a very brief run of low-voltage Core Duo-based Xeons. They had a 533 MHz or 667 MHz FSB.
