why is it that pins of cpu changes?

@ruelou (263)
Philippines
April 18, 2007 4:19am CST
i wonder every time a new cpu is released, new motherboard is required. new memory slots are re configured. why is it that the pins arrangements of cpu changes. like slot 1 to pentium 3 to pentium 4, all requires different motherboards.
1 response
@Destiny007 (5820)
• United States
19 Apr 07
This is because the newer CPU's and mboards have a whole new architecture that requires a higher pin count or a different format. Old generation components are usually not compatible with the new stuff anyway and it helps to prevent damage to your system in case of a mismatch. One example is the different memory that won't fit in sockets other than those designed for that particular memory such as the difference between DDR and DDR2 memory. They have different pin counts and are made so that they won't fit in each others slots.