Why can't my rig get past 3.7 GHz? - Page 2 - Overclock.net - An Overclocking Community

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Why can't my rig get past 3.7 GHz?

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post #11 of 13 (permalink) Old 03-12-2012, 02:16 PM
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Originally Posted by MrThatGuy View Post

If you left everything besides the HT and memory on auto then you are also overclocking the memory controller when you increase the base clock speed. If you're are already overclocking you probably want to keep the memory controller overclock, so give the CPU-NB a little more voltage, I think 1.25-1.35v is where you need to be for it.

Yep, your overclocking the CPUNB which is usually 2.6 for a deneb and 2.8-3.0 for thubans:D

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post #12 of 13 (permalink) Old 03-12-2012, 02:22 PM
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CPU_NB sounds like its a problem, MAX for C2 chips being around 2600 with ~1.4v (default multiplier at 260 bus gets you this number exactly).

But C2 chips almost always, from what I have seen, crap out at around 3.7-3.8. I have two C2 Phenom II's and both hit a wall around that clockspeed. Even many more volts dont help much.

And its not a thermal limitation either, both chips are running at less than 50c on the socket and less than 40c on the core sensor.

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post #13 of 13 (permalink) Old 03-12-2012, 02:24 PM - Thread Starter
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Yes, it's a C2 chip. frown.gif

Oh well.

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