FSB Speed

toxic

toxic

toxic

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5 Mar 2006
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Scotland
Quick question...

Currentyly have cpu at 2.6 on a 260FSB...and the RAM at 1:1....if I raise the FSB to say 300 or 300+, and run a divider on the RAM and lower multi on the CPU so that both the CPU and RAM are operating at the same speed....will i get any increase in performance boosting the FSB speed only????
 
No, the A64 chips are not particularly dependent on RAM being 1:1 with FSB to get good clocks. Simply put a divider on the RAM and raise the FSB normally.
 
A.N.Other said:
No, the A64 chips are not particularly dependent on RAM being 1:1 with FSB to get good clocks.
Click to expand...

Not that I'm disagreeing, but is there anything I can read online to substatiate this?
 
MT01XP said:
Not that I'm disagreeing, but is there anything I can read online to substatiate this?
Click to expand...
Google is your friend :)

AMD XP chips were relient on a 1:1 ratio to get really decent results from clocking and putting dividers on them did hurt performance. A64s aren't the same.
 
what im getting at is at the moment 255FSB x 10 on the CPU (2.55G), and mem is on 255 FSB 1:1 (510Mhz). If I raise the FSB to say 300...run the CPU on a divider of 8.5 (2.55G) and them memory on a 5/6 divider (2.5Ghz).....will I get a better peformance beasuse I am running my FSB at 300 even though the effective CPU and memeory speed remain the same????
 
No you won't see any difference with the 300 FSB afaik - some boards don't even like going to 300, does your's (this may be a rather futile discussion)?

You really don't need to change the multi at all. Just raise the FSB as far as it'll go on the default multi.
 
I'd like to know the answer too regardless that it's probably unlikely to make much difference.

Toxic, how about trying both methods of clocking and test with SuperPI 1M and post the results here. :)
 
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