Overclocking and FSB

[paruhd0x]

I have an Abit KT7 and a Tbird 1.2GHz. I know the multiplier only goes up to 12.5 When I change the FSB does the FSB effect all my devices in my system? I need to know a stable FSB I should be able to do.

-Thanks

 

[osage]

yep, when you increse the FSB it effects the pci, and agp bus also.
depends on your components as to what will be a workable setting, some nic,and hdds don't like to run out of spec.
most ppl can only run this chipset to about 105-110 anyway, so you won't be too far out of spec.

give it a try just keep bumping it till you start to have problems, then back it down a bit.

 

[neddog]

My equip is listed below..I am having real problems , I can run at 10x and 101 FSB, I can even go to 10.5 multiplier by raising my voltage to 1.85. But anytime I try to raise the FSB I get into freezing or my Video card doesn't display anything and I have to reset the MB to get a display.

I am almost wondering why I bothered buying high end ram... as I cannot seem to get any higher than with the pc100 ram that was in my system before :-(

So what procedure would be recomended...

Raise voltage to maximum sustainable....
Raise mulitplier to max bootable and stable..
Raise FSB/PCI to max
then raise just the FSB?

NeDDoG

 

[Mikaelb]

General. Raising FSB helps performance best. However it is a question of where PCI speed gives problems.
AGP is okay with geforce.
Is my system the limit is 5% overclock of FSB. over this UDMA has to be swithced of which kills performance.
Investigate this limit first with voltage at maximum reasonable 1,85V. Stop at a FSB that works.
This should be at 5-10% overclock with some happy customers hitting 15% or even 20% however the motherboard you have often stops at 110 Mhz. also remember that with >37Mhz PCI it is a gamble every time you ad something new to your hardware.
Next step is increasing the multiplier with 1,85 V and the new FSB. Find sweetspot.
Try easing voltage down a little after found maximum . Sometimes 1,75 or 1,8 works too.
finsihed!

 

[neddog]

THanks great piece of info
one question though.. how does I/O voltage work into the scenario? I have been reading lots of posts and have noticed this new wrinkle...

NeDDoG