F-PGA

[fvay]

Is F-pga is more closer to slot -1 or PPGA ? can someboyd explain more about it

[Szech]

I think you're referring to FC-PGA (Flip Chip Pin Grid Array). And in terms of similarity, it is the same size and pin form factor as PPGA (Plastic Pin Grid Array). However, the FC-PGA CPUs (namely coppermines and Celeron II's) run on less voltage than the PPGA (namely Celerons) CPUs, and the two are not compatible with each other. The FC-PGA also has two components switched (or flipped), since one of the components generates more heat, and was pushed closer to the outside closer to the heatsink. You can get a Slotket that will support both FC-PGA and PPGA, however, and you might find it useful to get one.