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Overclocking guidline

Hi there, is this guideline, to count the busspeed twice as important as teh cpu-speed good? For example: I overclock my Pentium 166 to 180. the cpu gets 14 MHz extra, but the bus gets 6 less, so that makes an overall profit of 14 - 6*2 = 2 MHz.    
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i8085
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i8085
1 Solution
 
finikCommented:
There is not such a thing. There are no deterministic formulas you can relate in this filed. It's purely statistic, since it depends on too many factors and your components. The best solution
is to check the overall performace by some testing program. When I overclocked
my PII, I executed WinTune testing on smth like 7-8 different configurations,
and choose the most fast (and stable)
one from the list. There are never ways
to "calculate" performance, only "estimate" it, but this estimatation often gives the different result, then the one obtained by testing.
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mitrakisCommented:
Have a look at this site:
http://www2.tomshardware.com/overclock.html

You'll always get more performance if you increase bus speed instead of cpu speed !
At Tom's site there are a lot of comparison charts you can check out.

The best way to improve system performance is to increase the bus speed. If you can't do that, either because your motherboard doesn't support higher bus speeds or your RAM or your PCI devices aren't up to it, you can change the multiplier instead.
Don't expect much gain in performance, however, if you increase the multiplier but you decrease the bus speed!!!

For example, changing from 166 @ 2.5x66 MHz to 180 @ 3x60
MHz will actually decrease your overall performance.
The same rule applies to changing from 133 @ 2x66 to 150 @ 3x50.

These types of changes will not make your system any faster!!
(...as Tom already stated...)

-Stavi-
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