Originally the Socket 370 (PGA370) was designed for Celeron Mendocino CPUs. These processors were manufactured in plastic PGA (PPGA) package,
ran at speeds 300 MHz - 533 MHz, and had 66 MHz front-side bus
this socket with the help of special
PPGA-to-FC-PGA adaptersor To support newer Coppermine Celeron and Pentium III processors Intel revised specifications for the socket 370.
The revised socket was mechanically compatible with the original specification, but there were differences in electrical specifications
If you read the specs on "your" socket 370........ you would have to - have one of these or both done already to your computer, not too sure.....
Read this link and see if this explains it for you.......
http://www.cpu-world.com/Sockets/Socket%20370%20(PGA370).html