Socket 370 definition hardware, standard, processor
(PGA370) A physical and electrical specification for a motherboard processor
socket. Socket 370 uses a square SPGA ZIF
socket with 370 pins, arranged 37x37 (sometimes described as 19x19). Intel
originally designed Socket 370 for PPGA
Celeron processors. Newer Socket 370 motherboards additionally support FC-PGA
Celeron and Pentium III
The difference between the two versions is electrical; some pins are used differently and voltage requirements have been changed from Intel's VRM 8.2 to VRM 8.4. In addition, Celeron processors require a 66 MHz front side bus (FSB
), and Pentium III processors require a 100/133 MHz FSB.
Some older Socket 370 motherboards support VRM 8.4 and variable bus speeds, so adapters are available that convert the socket pinout to allow FC-PGA processors to work. VIA
's Cyrix III processor was designed to work with Socket 370 motherboards.
Intel Celeron Processor in PPGA form factor - Integration (http://pentium.com/design/quality/celeron/ppga/integration.htm).
Pentium III Processors - Design Guidelines (http://intel.com/design/PentiumIII/designgd/).