Here are the important characteristics of processors:
- Processor make and model
The primary defining characteristic of a processor is its make—AMD or Intel—and its model. Although competing models from the two companies have similar features and performance, you cannot install an AMD processor in an Intel-compatible motherboard or vice versa.
- Socket type
Another defining characteristic of a processor is the socket that it is designed to fit. If you are replacing the processor in a Socket 478 motherboard, for example, you must choose a replacement processor that is designed to fit that socket. Table 5-1 describes upgradability issues by processor socket.
Table 5-1. Upgradability by processor socket type
Pentium II/III, Celeron
Slot 1 systems are not economically upgradable.
Slot A systems are not economically upgradable.
Celeron, Pentium III, VIA
Celeron, Pentium III
Limited availability of new Socket 370 processors. Relatively high cost for limited improvement.
Socket 423 processors are no longer available new. A motherboard upgrade is the best choice for a Socket 423 system.
Athlon, Athlon XP, Sempron
Limited processor choices. A BIOS upgrade may be needed, and the memory may need to be replaced. Old Socket 462 (A) motherboards may not support Sempron processors. ...