The older motherboards often have a smaller Purple Ceramic CPU, similar style board, but the RAM are smaller and 'clip in' differently.

Or a huge CPU that's got a couple of bolts sticking out of the Gold cap, or the rectangle Pentium Pro, that's worth good $$.



There's been a couple of old computers that I wish I never scrapped down now. 1984 HP & a older one.
There's two I left 'as is' simply because they didn't seem to have a CPU.
A " good desision " I was told by a guy who collects Sord computers.