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Get me stable!

post #1 of 20
Thread Starter 
Hey guys. I have a Q9300, which, as most of you know, has a clock speed of 2.5GHz at stock. Now, i've successfully overclocked and booted to 3.2 GHz, but i was not stable whatsoever. This is a problem because i've seen records of people who've overclocked and are stable at 3.4-3.5GHz. Now, my question to you is: What can i do to make my overclocks more stable during stresstesting.

My stress testing program is OCCT, and when i'm at 3.2 GHz or so, it simply freezes after about 5 seconds of the beginning of the stress test.

Right now i can run my PC at 2.915 or whatever it's posted at in the picture, and it's stable for a good while, but because i've seen that it's possible to get it higher, i just want to be capable of that.

Can one of you all give me a bit of a nudge in the right direction?

Thanks a ton in advance,

Jack
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post #2 of 20
You need to let us know what the rest of your system is because we can make any judgments.

I.E. What motherboard you are running that quad with, are you on the stock cooler? what ram are you running with? at what voltage are you VDIMM, MCH, etc etc.
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post #3 of 20
Thread Starter 
I apologize for the lack of information i left you guys with. I'm running on an EVGA 750i FTW motherboard. I have a Zerotherm heatsink : http://www.newegg.com/Product/Produc...82E16835887011

My ram is 2x2 A-data gaming memory : http://www.newegg.com/Product/Produc...82E16820211282

the voltages i could dig up for you were :

CPU Core: 1.256 V
CPU FSB : 1.20 V
Memory : 2.025 V
nForceSPP:1.40 V

for some reason...and i don't really get this because it's not THAT much better than my factory heat sink, but my temps are kinda crazy. They stay consistent, but they're fairly high. I found out that they would stay at those temps regardless if the OC was more or less....

idle: Core 1 + Core 2 = 56 C, Core 3 and Core 4 = 41 C
Full load : Core 1 + 2 = 70 C, core 3 and Core 4 = 56 C
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Teh Rig
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post #4 of 20
i think u need to bump ur CPU FSB up to maybe 1.3 1.4v... did u try pushin the vcore up a little to see if its stable? if that doesnt work u can always loosen the ram timings a little more.
Loosey Goosey
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post #5 of 20
Hey. It could be that your pushing your ram a bit to far, its only pc6400 (800mhz), and you have it overclocked up to 466 (932mhz). Have you tried using a different ram divider?
Edited by kathman - 6/15/08 at 1:31am
Oh, hai.
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Oh, hai.
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post #6 of 20
never exceed 1.35 volts on 45nm CPU. It will die.

Use FSB Volt of 1.2 to 1.3.... test back and forth, i find that the higher vcore you have, 1.3 helps atthe FSB

when I was running 1.28 vcore, 1.2FSB v helped things get stable at lot lower voltages

Also set your RAM unlinked to remove it as the problem

Use Realtemp to measure CPU temps if you are iffy about it

Make sure you have good cooling too - Quads are HOTT
    
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post #7 of 20
Thread Starter 
I'd be lying to you guys if i said i was an experienced overclocker. I'll try bumping up my CPU FSB a bit more, as far as vCore goes, that means the CPU Core voltage, correct? Terribly sorry. I will try to loosen the ram timings a bit.

Earlier when i was typing to you all, i had my timings set that they were linked to my FSB increases, so...they were jacking up the RAM with the CPU.

After i had posted this thread, i had changed from linked to synced, and the RAM is staying at 4-4-4-12 as the stock DDR2 800 that it was rated at and i seem to be holding 3.075GHz stable so far, so perhaps my ram was holding me back there.

To the most recent previous poster -- how could i change the RAM divider / what is it? I apologize for causing you to explain the situation.

And since you guys have a good handle on what you're talking about, how far is *too far* when it comes to upping voltage, obviously the last thing i want to do is fry my parts.

Thanks so much guys, you're a great help.
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Teh Rig
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post #8 of 20
Quote:
Originally Posted by woodelfe View Post
I'd be lying to you guys if i said i was an experienced overclocker. I'll try bumping up my CPU FSB a bit more, as far as vCore goes, that means the CPU Core voltage, correct? Terribly sorry. I will try to loosen the ram timings a bit.

Earlier when i was typing to you all, i had my timings set that they were linked to my FSB increases, so...they were jacking up the RAM with the CPU.

After i had posted this thread, i had changed from linked to synced, and the RAM is staying at 4-4-4-12 as the stock DDR2 800 that it was rated at and i seem to be holding 3.075GHz stable so far, so perhaps my ram was holding me back there.

To the most recent previous poster -- how could i change the RAM divider / what is it? I apologize for causing you to explain the situation.

And since you guys have a good handle on what you're talking about, how far is *too far* when it comes to upping voltage, obviously the last thing i want to do is fry my parts.

Thanks so much guys, you're a great help.
Dont know about the 750i but you should be able to select "unlinked' for your devider...

For 45nm specs look at the related link in my signature... do not exceed 1.365 volts EVER.

and if you cant unlink RAM, set the divider to whatever yeild the "slowest" ram speed to be safe for now
    
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post #9 of 20
Thread Starter 
Okay, so i changed the Ram to unlinked. Stuff seems to be going pretty solid so far. I'm still noticing my higher temps, even with the after-market heat sink. Should i be really worried about 73C if i'm keeping an eye on it constantly? I'm kinda skeptical.

One more quick question for you guys. If i slow my RAM down a bit like you're all suggesting, is that going to slow down my system by much? I mean...I'm trying to make the most reasonable sacrifices for raw power. Also, an other concern of mine was that my buddy told me that thermal grease has a bit of a break in period. Is this true, and if so what is it? I don't want to do anything that might hurt my parts or seriously cut down my hardware's life-time by much. I understand that by over clocking, i'm willingly shortening the life-span of the hardware, but if i overclock from 2.5GHz to a stable 3.0 or 3.2 or so, about how much would i be cutting the lifetime by?
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Teh Rig
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post #10 of 20
you dont leav the RAm unlinked

Once you are stable for good, then bring the RAM back up to speed. We are getting your CPu stable, leave RAM out of the equation, makes it easier.

Break in periods are only for AS5 compound, anything else takes 20 minutes of heat to get situated then you are fine

And overclocking within safe ranges (of heat and volts) will take your CPU lifespan from 10 years to....6 years? nobody keeps a CPU for that long anyhow

and 73*C is WAY TO HOT

Stay under 68*C... thermal limit is 72
    
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