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Why does...............?

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Name: indigian
Date: September 19, 2003 at 16:58:42 Pacific
OS: 98se&xp pro
CPU/Ram: Athlon 2400xp/512 pc3200
Comment:

nf7-s
512mb pc3200
fx 5600 256mb
xp 2400+

OK.My question is,the 2400 uses an fsb of 133 and a multiplier of 15 which =2ghz,right?
I've put my fsb to 200 and the multiplier to 8.5 which is only =1.7ghz,but my pooter runs faster?????????
When I try to change the multi to 9 it won't even post?but at 8.5 everything is good and stable.

With the multi at 9 it still only equates to 1.8ghz,which is lower than the original 2.0ghz.Why?

Will running my pooter with a higher fsb hurt?

I've got 550w psu,I've heard u guys talkin about increasin chipset voltages etc,would a multi of 9(or more)give better performance?Which parameters should I increase or have I reached the limit.

LIKE most of you guy's I don't need the extra power,I'm just doin coz I can....



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Response Number 1
Name: SkipCox
Date: September 19, 2003 at 17:38:58 Pacific
Reply:

Did you try combinations between 133 and 200?
Small changes, a benchmark utility and a notepad/pencil will give you the most bang for the buck.

Explanations of why fsb changes give more performance than multi changes are all over this forum. In a nutshell it's a 1.4:1 ratio. You need to find the sweet spot for your rig.


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Response Number 2
Name: johnoh
Date: September 19, 2003 at 18:16:35 Pacific
Reply:

"OK.My question is,the 2400 uses an fsb of 133 and a multiplier of 15 which =2ghz,right?
I've put my fsb to 200 and the multiplier to 8.5 which is only =1.7ghz,but my pooter runs faster"

200fsb is is 50% faster than 133fsb. Using the 40% fsb contribution rule that means a 10x200 computer is 40%x50% = 20% faster than a 15x133 computer. Or in your case, a 8.5x200 computer is 4% faster than a 15x133 computer. These numbers are just estimates btw. There really isn't a 40% rule - its just the result of averaging score increases when increasing fsb while holding ghz constant that I found on the net a while back.

So your computer does not post at 9x200 but does post at 8.5x200. That is weird. I suggest (this is a good idea to do with every new mobo) that you set the fsb at a minimum and see if it will boot with all multipliers, then set the multiplier at a minimum and see if it will boot at all fsb's. It may be a bug with the multi of 9.

Yes a higher fsb hurts your computer, but your computer can take it. It makes it work harder on several levels but that's the idea so, no biggie.


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