A friend bought a faster AMD processor suitable for their motherboard - a second user item from ebay, so there was obviously some risked attached.
On installation it was unstable at 200MHz FSB. Also unstable at 166... and at 133... and only barely stable at 100MHz FSB. Oh dear. Instead of running at 2.2GHz (XP3200+) it runs at 1GHz (XPno idea but slower than the original processor).
Attempts have been made to clean the processor up and it's stable now but only at this slowest FSB setting.
This is all way over my head so I come here for advice.
The clock multiplier is being set to "Auto" for each FSB speed. Is it possible to set the multiplier manually at a lower setting in order to obtain a sub-optimal-but-stable processor at one of the higher FSB speeds? (Does that question even make sense?!).
What I'm getting at is, the processor may not be stable at 200MHz FSB with a clock multiplier of 11, but maybe it will be at a multiplier of 10. Is there some particular step change of multiplier that has to be used - that is, can we try 10.9, 10.8, 10.7 etc or do we have to change it from 11 to 10 then 9 or what?
Are we flogging a dead horse even comtemplating this idea?
Clearly, I don't even understand my own question, but I hope to understand the answer (with a bit of luck). All replies appreciated.
The MB certainly does support the faster CPU according to the manufacturers site and does not require a BIOS update - fully confirmed.
Regarding whole number multiplier numbers, is there a technical reason for this or not? I'm aware that at some FSB speeds the automatic multiplier is not a whole number (13.5 in one case I think) so it doesn't seem to be a hard and fast rule.
Instead of people guessing, has anyone actually had to try this and know for certain? I'm quite a good guesser myself, but I'm asking for direct experience.
Sorry i dont have direct experiance, But my brother had problems with his new install of an AMD processor i.e unstable, We only got it sorted because the memory etc was linked to the FSB and was causing all sorts of problems. Maybe it is worth looking at all the things that are affected by the FSB. I hope this helps.
PC3200 RAM installed and it didn't help, unfortunately. Reverted to the original processor and all's back to normal, albeit with a bit more RAM (faster to but not accessed at rate that shows any benefit).
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