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Phenom X2 560 4.44ghz Help

post #1 of 7
Thread Starter 
Hello,

I have a Phenom X2 560 overclocked to 4.44ghz @ 1.46V NB@2200, Biostar TA890fxe MB. 24 hours Prime95 stable, F@H stable, 15.69 superPi 1M.

My question is, my NB frequency of 2200mhz is seemingly low, however, when I try to increase it the system is unstable. Is a higher NB frequency preferable or should it only be increased to stabilize a system?

I searched and found conflicting information, I called Biostar and they said it shouldn't be increased.

Thanks in advance
post #2 of 7
Ok. The higher the CPU-NB is the better the performance is. Did you upper your cpu-nb voltage too?
Example
955 @ 3.6ghz with cpu-nb at 2600 has better performance then 955 @ 4.0ghz with cpu-nb at 2000.
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post #3 of 7
A higher NB definitely makes your system much more responsive.
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post #4 of 7
I don't think you will be able to go higher...these chips are affected by the CPU-NB alot...for example mine will not hit 4.5ghz unless the nb is at 2600mhz with exactly 1.31v, any deviation causes instability...so what you have to do is keep fiddling and find another sweet spot...i know it sounds ridiculous but thats how it is...with these chips anyway.
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post #5 of 7
i can get silly nb speeds(4ghz+) with 1.32v but i think cooling may be the issue,2600mhz should be attainable with a voltage bump even on stock cooling.
did you reach your cpu speed by fsb or multi?
if fsb is involved then you may need to loosen the ram timings and/or lower the divider to achieve higher nb speeds,ultimately its well worth it
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by dixson01974;12979652 
Ok. The higher the CPU-NB is the better the performance is. Did you upper your cpu-nb voltage too?
Example
955 @ 3.6ghz with cpu-nb at 2600 has better performance then 955 @ 4.0ghz with cpu-nb at 2000.
CPU-NB voltage is at 1.275
Quote:
Originally Posted by MightyMission;12982192 
i can get silly nb speeds(4ghz+) with 1.32v but i think cooling may be the issue,2600mhz should be attainable with a voltage bump even on stock cooling.
did you reach your cpu speed by fsb or multi?
if fsb is involved then you may need to loosen the ram timings and/or lower the divider to achieve higher nb speeds,ultimately its well worth it
240x18, if I lower my fsb, my ram drops from 1600. The ram is gskill Eco 4gb@1.5v 7-8-7-24-1T

Thanks for all the help, I'll work to up that frequency.
post #7 of 7
Higher CPU-NB opens the RAM bandwidth up and is a huge benefit.

You may be able to run the ECOs at 6-8-6 like a lot of us are.
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