"Clive" wrote in message
...
|
| Dear Motherboard Gurus.... tell me if ...
|
| ... it would do any harm to plug in a CPU of a higher FSB rating than
| the MOBO is designed for ?
| My mobo has a fsb rating of 400MHz but my P4s rating is 800Mhz.
| I personally feel it woud do no (physical) harm except, perhaps,
| to 'pull down' the P4's capability and cause it to be under-utilised?
| Please correct me if I'm wrong
| thnx

You do not have to be a guru to apply some simple rules.

Various models of CPU use differing voltages and multipliers. The BIOS
extracts a model code from the CPU and uses this to identify the chip and
set the working parameters accordingly on modern auto configure mobos:
(remember the old boards where you had 8 or 10 jumpers to set voltages,
frequencies and such, plus perhaps a DIP switch or two).

Unless you can set these things manually, then the CPU type must be on the
board's list of acceptable CPUs for a known outcome. Refer to the maker's
specs in the book or on their web page. (Occasionally closely related CPU
versions work, sometimes in a limited mode, sometimes the chip may be
damaged - take your chances or get someone else to try it).
John.