Socket370 is named for the number of pins this particular socket has. After Intel found a way to cheaply put the cache of a CPU on the die itself, the benefit of having a processor on a daughtercard was minimized. With that, it became not only an added cost to continue to produce Slot 1 processors, but also a useless cost. Intel then took the chip off of the PCB, and created Socket370. It's basically Socket 7 with an extra row of pins on all four sides. The first processors to use it were the PPGA Celerons, then quickly following were the FC-PGA Pentium III processors along with the Celeron II line. Socket370 chips can be placed on a daughercard just like Socket 8 chips in order to fid into a Slot 1 Interface. Socket370 is also made to use previous Socket 7 heatsinks, although most of these cooling devices are too small and weak to cool these modern processors. This Socket is used for Pentium III, Celeron, and Celeron II processors.
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