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Better to have a high FSB or a higher CPU Multi?

post #1 of 18
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I was just wondering when it comes to over clocking is it better to lower the cpu multi and add a higher FSB or is it better to have a lower FSB and a higher multi. I know raising the multi affects the ram speed, and as far as I know raising the multi does nothing to the system but raise the CPU speed.
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post #2 of 18
I think a high FSB makes a pc unstable, so low FSB and high multi would be best.
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post #3 of 18
Higher FSB are good for all around performance increase but higher multi must be used to get highest clock speed possible.

FSB=ALL faster
Multiplier change=CPU faster/slower
    
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post #4 of 18
Must have good mobo and very good RAM for above say 350-400+FSB but with higher multi get better CPU speeds with less stress on the NB.
    
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post #5 of 18
Ok... I do some experiments by myself... and this is what I got...

Multiplier----FSB--------Vcore-------Frequency-----CPU Score(3dmark06)
----7X--------340--------1.15v--------2.72GHZ-------1999 Points
----8X--------340--------1.15v--------2.72GHZ-------2264 Points

So in conclusion... is better a high multiplier
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post #6 of 18
that makes no sense mate because 340x7 is only 2380mhz so of course its going to be faster at 2.7

What the guy meant in the question was is 380x7 = 2.7ghz faster than 340x8=2.7ghz

And a think the answer would be the 380x7 as it increases memory bandwidth also but stresses the nb more so i usualy choose to use a higher multi instead.
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post #7 of 18
This is what you call extreme FSB.....


post #8 of 18
Quote:
Originally Posted by sonicmat View Post
that makes no sense mate because 340x7 is only 2380mhz so of course its going to be faster at 2.7

What the guy meant in the question was is 380x7 = 2.7ghz faster than 340x8=2.7ghz

And a think the answer would be the 380x7 as it increases memory bandwidth also but stresses the nb more so i usualy choose to use a higher multi instead.
When i put 340*7 my pc was showing 2.72ghz...
What can happend if you stress the nb a lot?
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post #9 of 18
Nothing i dont think aslong as its still running cool enough, i just prefere not to stress it out too much, i need to keep my pc for a long time.

Ok well just do the calculation, 340x7 = 2380 so i wouldnt know why your pc said it was running at 2.7.
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post #10 of 18
This question is seriously MB dependent. For example my AB9 would run faster benchies at 415mhz than say a P5B. In this case it's due to the latency on the NB strap. A P5B MB will loosen the strap to 1333 and my Abit runs at 1066 so the tighter latency makes for a faster system.
In the end a higher FSB will make a higher bandwidth for your rig as a whole.
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