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So 4.5ghz on E8600, 10 by 450 or 9 by 500

post #1 of 20
Thread Starter 
Was wondering which one is better or does it really matter, I can get it stable at 4.5ghz both ways with same cpu voltage, but the 500fsb I have to boost NB and FSB term up to 1.4 to be stable, with 450 I can run 1.28 NB and FSB. IS there a real bonus in using 500fsb?
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post #2 of 20
Quote:
Originally Posted by mizike View Post
Was wondering which one is better or does it really matter, I can get it stable at 4.5ghz both ways with same cpu voltage, but the 500fsb I have to boost NB and FSB term up to 1.4 to be stable, with 450 I can run 1.28 NB and FSB. IS there a real bonus in using 500fsb?
Faster FSB would be better, but by how much I cannot say it would be different from application to application. The difference would not be great, or even noticable in some cases. However, a faster FSB on equal CPU clock speeds within the same architecture will always be better.
post #3 of 20
use the higher FSB. it will be faster. the upped NB voltage should be fine.
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post #4 of 20
but lower voltage means less stress to the NB. less voltage=win
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post #5 of 20
Quote:
Originally Posted by Ricdeau View Post
Faster FSB would be better, but by how much I cannot say it would be different from application to application. The difference would not be great, or even noticable in some cases. However, a faster FSB on equal CPU clock speeds within the same architecture will always be better.
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post #6 of 20
Thread Starter 
Yeah thats what I would think too, but as said above, lower voltage is better so guess still not sure, people warn me of this 1.4 on FSB term and NB, I dont plan on keeping it over a year anyways I am sure, so I guess I can risk it lol, MY board gets to 530fsb or so, but when running with 10 multi no matter what Can not break freaking 4.5ghz stable so guess next best think is 500 fsb lol
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post #7 of 20
Also depends on your ram timings.

If you can get the ram much tighter with a lower FSB it might be better.

But I would keep your cpu at 450 x 10 because 50 more mhz on the FSB won't really make that much of a difference and lower voltages are always better.
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post #8 of 20
Quote:
But I would keep your cpu at 450 x 10 because 50 more mhz on the FSB won't really make that much of a difference
Your timings dont need to be as tight, with additional bandwidth from the FSB increases to see the same throughput figures in synthetic benchies.

ie- With my sig'd rig:

4-4-4-4 @ 460mhz FSB 1:1 = 11.1k Read and 51.2ns latency

4-4-4-13 @ 481mhz FSB 1:1 = 11.3k Read and 50.7ns latency


**It took more voltage to run 4-4-4-4 at 450mhz FSB than it did for the ram to run 4-4-4-13 @ 481mhz, as well...
post #9 of 20
Higher FSB = better, usually requires more voltage.
Lower FSB = don't have to worry about the motherboard's wall, usually requires less voltage.

Try ram timings of 4-4-4-12, fiddle around with the 12, maybe 13, maybe 14, what ever works best for your ram.
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post #10 of 20
performance wont be significant, only on benches w/ 9x.
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