Multiplier problems with C2Q QX6700

thedeathclox

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Jun 22, 2012
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I'm havign an overclocking issue with my Core 2 Extreme Quad QX6700. Its hard to explain so I'll put it this way:

I can achieve 3.40GHz effortlessly by cranking the FSB from 266 --> 425 and keeping my ram at 851MHz all stable.

I cannot achieve 3.40GHz by lowering my FSB and increasing the multiplier; if the multiplier is over 10 (min 6, max 31) then it causes instability, crashing, and if high enough it might hang on start.

Why is it that increasing my FSB is yielding such dramatically better results? Shouldn't an overclock to the FSB be far more dangerous and unstable in comparison to a multiplier adjustment? Also, yes I am doing all of my overclocking from within bios.

Motherboard: Asus P5Q SE
CPU: Intel Core 2 Quad (Extreme) QX6700
RAM: 7GB DDR2-800 from Crutial (I have heat spreaders on them)

I don't get it? I'm not particularly new to overclocking and this totally contradicts anything I have seen. Faulty CPU? Is this not a very good chip set for overclocking the LGA775 cpu's? I understand P5Q SE isn't an outstanding motherboard but its decent and has good overclocking features. Thanks in advance!

-edit- Riddled with typo's.