The "core" in a processor is the microprocessor inside of the CPU(Central Processing Unit). For example, if you have a Dual Core CPU then you have 2 microprocessors inside of the CPU, this allows you...
If it shares the same slot-type and the motherboard supports it, yes. In some cases, a motherboard will support a processor with a higher number of cores than was originally intended thanks to BIOS...
The chip that is the 'brain' of the computer. The faster the processor, the better a computer will perform. The latest processors have multiple 'cores', meaning that in effect there are several...