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Q9450 vs Q9550 OCing Abilities - Page 2

post #11 of 35
SOME 9450's can hit 4.0. It's kind of ridiculous - it takes me 1.29 vCore idle to make 3.8 rock stable but 3.9 takes 1.4 and 3.964 takes suicide runs - my board won't push higher than 496 FSB with a quad.
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post #12 of 35
Quote:
Originally Posted by procpuarie View Post
woops i ment like 3.8. 4.0 was for really good e0 chips wich he should get if he ordered it now. also, it was on water.
there are no e0 q9450's
    
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post #13 of 35
Quote:
Originally Posted by ErBall View Post
there are no e0 q9450's
. i feel so stupid now. i have seen 4.0 q9450's but i had no idea that there wasn't e0's. *runs to the shame corner*. reps for you for pointing that out. i still stick with getting the q9550.
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post #14 of 35
Quote:
Originally Posted by blee1149 View Post
where's everyone today?
D00d. Please wait 24 hours before bumping threads.
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post #15 of 35
Thread Starter 
opps, never knew about the 24hr bump rule, (i see too many ppl violating it )
there's only C0 and C1 for Q9450, --> which one is better though? C1?
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post #16 of 35
Quote:
Originally Posted by rpm666 View Post
SOME 9450's can hit 4.0. It's kind of ridiculous - it takes me 1.29 vCore idle to make 3.8 rock stable but 3.9 takes 1.4 and 3.964 takes suicide runs - my board won't push higher than 496 FSB with a quad.
Yeah, after 475MHz FSB starts taking insane voltage bumps on vcore and vtt for me to be stable.

I'm really heat limited with my Xigmatek at such speeds, but I could probably get my X3350 to 4Ghz stable, but I would need over 1.4 vcore and around 1.4 vtt.
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post #17 of 35
Quote:
Originally Posted by Blameless View Post
Yeah, after 475MHz FSB starts taking insane voltage bumps on vcore and vtt for me to be stable.

I'm really heat limited with my Xigmatek at such speeds, but I could probably get my X3350 to 4Ghz stable, but I would need over 1.4 vcore and around 1.4 vtt.
At 476 FSB heat isn't a big deal - anything above that and the voltages have to be damn near maxed out - plus you really have to tweak the GTL reference volts
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post #18 of 35
I have my GTLs fully tweaked.

Heat is a big deal for the Xigmatek and OCed quads. It's three heatpipes just cannot carry away the heat a 3.8GHz+ yorkfield makes fast enough.

I can stay at acceptable temps passively cooled at up to 3.4GHz, run a near silent slipstream at 3.7GHz, but past 3.8GHz not even a 115CFM 120x38mm Panflow with 10+ mm of static pressure can keep temps in check if my ambients climb.

Before I make a serious attempt at 3.9-4Ghz stable, I'm going to get a true and de-lid my chip.
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Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
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post #19 of 35
Thread Starter 
so "usually" Q9550 need a lower voltage when it's the same clock speed?
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post #20 of 35
Dude 500FSB is REALLY hard on a lot of chips and motherboards. Don't ever buy a chip because you expect to get 500 FSB lol... that's silly!

A good chip on a good motherboard could yield you 4GHz yes, but that in no way means you should get your hopes up. I'm aiming for 4 GHz on mine, currently testing at 3.825GHz. If my mobo can do it than yours probably can, key word being probably.
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