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Nice basic E6600 overclock, but...

post #1 of 19
Thread Starter 
Have it at 3.2 GHz, 400x8, vcore set in BIOS to 1.275 v, BIOS reading 1.224 v, cpuz reading 1.232 v, mem 4-4-4-12 load temps 46*C with twin Orthos, 51*C when loading with TAT, stable.
Very nice indeed, with the low voltage and nice temps.
However, I haven't been able to get it any higher (0.1 GHz steps...). It can run this speed with this low voltage, but not much higher, even if I raise the voltage.
I must be missing something... not raising vcore enough? Do I have to set other voltages manually?

Edit: Since I have the Promo Corsairs, I tried higher with x9 multi and lower clock...
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post #2 of 19
Quote:
Originally Posted by Waperboy View Post
Have it at 3.2 GHz, 400x8, vcore set in BIOS to 1.275 v, BIOS reading 1.224 v, cpuz reading 1.232 v, mem 4-4-4-12 load temps 46*C with twin Orthos, 51*C when loading with TAT, stable.
Very nice indeed, with the low voltage and nice temps.
However, I haven't been able to get it any higher (0.1 GHz steps...). It can run this speed with this low voltage, but not much higher, even if I raise the voltage.
I must be missing something... not raising vcore enough? Do I have to set other voltages manually?

Edit: Since I have the Promo Corsairs, I tried higher with x9 multi and lower clock...
Set v-core to 1.35v/1.40v and try again. With your temps and o/c I'd expect you to be able to go a fair bit higher with some more voltage. Try not to go above 1.45v though. Also, you might want to try a 9x multi to find your CPUs max o/c with your cooling.

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post #3 of 19
You might find this useful.

http://www.xbitlabs.com/articles/cpu...o-e6300_8.html

"The first problem surfaced when we got close to 400MHz FSB frequency. Any further frequency increase would prevent the mainboard from booting. It had evidently nothing to do with the CPU, because Vcore increase didn’t affect the situation in any way. We discovered, however, that at this high bus frequency chipset North Bridge fails, although Intel uses pre-selected most stable and reliable chips for its i975X core logic. The problem can be resolved easily by raising the chipset MCH voltage.:The first problem surfaced when we got close to 400MHz FSB frequency. Any further frequency increase would prevent the mainboard from booting. It had evidently nothing to do with the CPU, because Vcore increase didn’t affect the situation in any way. We discovered, however, that at this high bus frequency chipset North Bridge fails, although Intel uses pre-selected most stable and reliable chips for its i975X core logic. The problem can be resolved easily by raising the chipset MCH voltage."

I've tried so hard to get the same setup as you. But it would seem that my mb temp is holding me back. What is yours mb temps at?
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post #4 of 19
Thread Starter 
Quote:
Originally Posted by CrazyHeaven View Post
I've tried so hard to get the same setup as you. But it would seem that my mb temp is holding me back. What is yours mb temps at?
I can't really tell, I have two other temps - System and AUX. After hours of idling, my System is 47*C, and AUX is 50*C. Now comes the werid part.
In SpeedFan, I have a Speed03, which is at 36% all by itself. if I raise it, or lower it, AUX temp goes to 120*C...
So I don't really know what the MB temp is.

Edit: As implied earlier, I've never gone over 400 fsb, all attempts have been with lower fsb, higher multi
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post #5 of 19
Thread Starter 
The voltages I can change in BIOS, other than vcore and vdimm, are:
FSB termination voltage
MCH chipset voltage
ICH chipset voltage
All three are set to auto, so I can't tell what's the stock voltages.
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post #6 of 19
Leave your FSB Term. voltage to auto, along with your ICH chipset voltage.

Change your MCH chipset voltage to 1.6v, that should help make your OC more stable.

The stock voltages are usually the lowest selectable setting.
    
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post #7 of 19
Thread Starter 
Wowza, CrazyHeaven - thanks, you both helped a lot. I got a stable 3.4 GHz, typing this on 3.6, unstable.

Oddly, the next step up from stock that I could set MCH voltage is 1.65v. Vcore now at 1.35v.

Feels promising, back to BIOS.

Edit: All my fans are at lowest speeds - so far, temps are not a problem. The IHS and HSF are unlapped, and the thermal compound was rather sloppily 'painted' on - stuff to be taken care of!
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post #8 of 19
Thread Starter 
Ok, giving up 3.6 for tonight. Tried with vcore 1.4v, MCH 1.65v.
3.4 is stable at 1.365 vcore (was wrong above) and MCH 1.55v.

Temps were going above 60*C at 3.6 anyway, which is not something I can live with.

Future will tell.
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post #9 of 19
by dropping the multi down to 8x, you just force the NB to feed on more voltage. Just pump more NB voltage and it should solve your problem.

Or leave the multi to 9x and try 400mhz. vcore 1.5 for 3.6
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post #10 of 19
Thread Starter 
Everything above 3.2GHz was with 9x multi. Since I have the Promos Corsair mem I don't want to go over 400MHz until I find the maximum of the rest of the system.

So even more voltage, then - thanks.
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