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Any advice for getting my Q9550 (C1) past 4GHz? (P5Q Deluxe)

post #1 of 14
Thread Starter 
Currently sitting (unstably, according to Prime95 and LinX) at 4GHz, and I'm not sure where to go from here. I'd like to make it to 4.25GHz on my P5Q Deluxe, but right now, vcore is at 1.52v and 4GHz isn't comfortably stable. Not to mention, it loads at 83C, which is pretty eurgh (Ambient ~22C).

Surely just adding more vcore isn't the way to stability? I know I'm on a C1 Q9550, but that can't be hampering my efforts that much, can it?

All the fancy settings (PLL and NB and clock skew and whatnot) have been left on Auto or have been otherwise untouched - perhaps there lies the secret to 4.0+.

Also, what are the odds I'm limited because I'm running 4 sticks of DDR2?
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post #2 of 14
I'm not familiar with that board but, I can tell you this: if your vcore is at 1.52 actual (like in CPU-Z) you are waaaay past the limit. That's a helluvalot of voltage bro.

Try this: take 2 of your RAM sticks out and then try and get the cpu stable, with only 2 sticks in and WITHOUT oc'ing the memory. (Keep the RAM at or even below the stock speeds so you only have to trouble shoot the cpu for now.) That way, when you do get the cpu stable, all you have to do is pop the other 2 sticks back in and then mess with the NB voltages.

I'm sure someone with experience with that board will help you out eventually.

Wish I could help out more bro.

Edit: Q9550 + P5Q DELUXE.

P5Q OWNER'S.

Good luck.
Edited by crashdummy35 - 7/16/11 at 11:13pm
 
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post #3 of 14
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post #4 of 14
I'd say you found your problem on your own!
Quote:
Also, what are the odds I'm limited because I'm running 4 sticks of DDR2?
This will put a lot of added stress on your cpu, and the fact that your mixing brands of ram. Just not a good idea!
These factors will limit your ability to overclock!
Quote:
Memory
[4x2GB|DDR2-1000/1200|5-5-5-15][G-Skill|OCZ]
Not good!

Take out 1 set, and test again!
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post #5 of 14
1.512 way too high for 45nm...

thats near the max for 65nm.. your gona burn your chip up.

thumb.gif
post #6 of 14
Quote:
PLL and NB and clock skew

PLL - 1.62v
NB - 1.45v
clock skew - delay 100

Take your vcore, and keep lowering it till it wont boot up, then raise it a few ticks, and test for stability, with only the G.Skill memory installed.
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post #7 of 14
I have managed to run my P5Q Pro @ 506MHz FSB and it was stable in games,3DMark 11,Cinebench but it would error on cores i P95 Large FFT test..

P5Q Deluxe is better mobo and it has better CPU GTL and NB GTL options in BIOS,but still I'm almost sure that 500MHz FSB stable in P95 Large FFT test is not possible on it..

Maybe ~ 485MHz FSB is more realistic overclock..


And KEEP Vcore UNDER 1.4V (UNDER LOAD) AT ALL TIME..

KEEP YOUR CORE TEMPERATURES UNDER 75C AT ALL TIME..



CHEERS..
     
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post #8 of 14
Quote:
Originally Posted by Inteller;14243597 
PLL - 1.62v
NB - 1.45v
clock skew - delay 100

Take your vcore, and keep lowering it till it wont boot up, then raise it a few ticks, and test for stability, with only the G.Skill memory installed.

OMG, I didn't even see that.

@ DEC42: yeah bro, you want to take one of those mismatched sets out for now. Leave one set in and do your oc'ing. That could be causing you some serious issues right there.

And just my 2cents.gif but 1.45v is the highest I've ever gone in CPU-Z. But my temps have never gone above 58c under load (PRIME95).

You are definitely in the Danger Zone at that voltage man. Couple of years back AlMighty did an experiment with a 45nm chip and at 1.6v it burnt the pads. 1.6v 24/7 The chip still worked but the pads were burnt and that means the cpu socket itself was soon to go too. Your hardware, just a heads up for you.

Good luck.

___________________________________________________________

And if you don't mind my asking:
What TIM are you using?
What fan/s do you have on that Mega?
Is it tightened ALL the way down?
Edited by crashdummy35 - 7/17/11 at 9:03am
 
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post #9 of 14
That's some crazy voltages. Remove 2 sticks of RAM if you want an easier time.

I wouldn't use your voltage settings for daily unless you're OK with risk.
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post #10 of 14
Thread Starter 
Quote:
Originally Posted by crashdummy35;14246010 
OMG, I didn't even see that.

@ DEC42: yeah bro, you want to take one of those mismatched sets out for now. Leave one set in and do your oc'ing. That could be causing you some serious issues right there.

And just my 2cents.gif but 1.45v is the highest I've ever gone in CPU-Z. But my temps have never gone above 58c under load (PRIME95).

You are definitely in the Danger Zone at that voltage man. Couple of years back AlMighty did an experiment with a 45nm chip and at 1.6v it burnt the pads. 1.6v 24/7 The chip still worked but the pads were burnt and that means the cpu socket itself was soon to go too. Your hardware, just a heads up for you.

Good luck.

___________________________________________________________

And if you don't mind my asking:
What TIM are you using?
What fan/s do you have on that Mega?
Is it tightened ALL the way down?

Well, I used to have it at 1.47v on my BioStar TP35D2-A7, but that was because the vdroop on it was unholy. I guess I'll have to be more diligent with my vcore on this board.

I don't think I really want to run the chip at 1.5v+ 24/7, so, don't worry too much about that wink.gif.

TIM is AS5, long cured. Fans are some 120x25mm Antec case fans that I don't know all too much about. I'm certainly sure that the Mega's tightened all the way down.
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Autistic Savant
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