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E6750 to 3.0ghz using cpu stock cooler?

Forum Overclocking : CPUs - E6750 to 3.0ghz using cpu stock cooler?

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jincuteguy   05-04-2008 at 09:38:41 AM

Do you guys think I can OC my E6760 2.6ghz stock to 3.0ghz using the stock cpu cooler ? or do i need a good separate brand cpucooler? thx.

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Horhe   05-04-2008 at 10:07:25 AM
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I have mine at 3.0 GHz (1.3165 V) with the stock cooler. The temp of each core doesn't rise above 65C under the stress test. You may succeed with a smaller voltage, because I've got a chip that doesn't overclock that well.


Message edited by Horhe on 05-04-2008 at 10:09:12 AM
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jincuteguy   05-04-2008 at 10:13:50 AM
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if everything turns out to be stable at 3.0ghz, will there be any downgrade in the future to my cpu? like about how long will it last at 3.0ghz speed before it got fried and i ahve to buy a new one?

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jincuteguy   05-04-2008 at 11:05:24 AM
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Also I have a Asus P5K board and it only has 6, 7, and 8 as the multipliers. So if I want to overlocked my E7650 (2.6ghz) to 3.0ghz I have to change the FSB to 375 (375x4 = 1500) right?

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Horhe   05-04-2008 at 11:21:41 AM
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It won't have that much of an impact on your CPU's lifespan because you can go to 3 GHz without an increase in voltage. The default voltage set in BIOS for my CPU was 1.35 V, which is overkill for it's default speed. What is your CPU voltage right now? If it's 1.35 V you can try and lower it, to reduce heat and increase your CPU's life.

To get 3.0GHz you'll have to set the FSB to 375 MHz, so you're correct.

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jincuteguy   05-04-2008 at 06:02:27 PM
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yea you're right the P5K board default voltage is 1.3500v so u think i should lower it? will it cause the board anything if i lowered it? I mean since it's default at 1.35v shoudl we leave it at that?

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jincuteguy   05-04-2008 at 06:05:35 PM
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Actually I think i was wrong about the voltage, I just ran CPU-Z and it said the voltage of my cpu currently is 1.216V. Is there a better program that tell the voltage for the cpu more precise than this?

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jsc   05-04-2008 at 06:21:28 PM
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An E6600 runs quite nicely at 3.0 GHz with the stock cooler.even after I undervolted from the default 1.35 volts to 1.25 volts.

Stress test for whatever period of time you feel reasonable (I use 24 hours). Then start lowering the voltage until the system becomes unstable.

I suspect that such a moderate OC, especially with no increase in vcore, will have little practical effect on the lifetime of your system

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iluvgillgill   05-04-2008 at 07:00:00 PM
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there hasnt report by anyone that their OC CPU died on them.so i guess you will be upgrading before the CPU actually die.

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jincuteguy   05-04-2008 at 07:08:26 PM
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What program that you recommend to see the CPU voltage?

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iluvgillgill   05-04-2008 at 07:12:48 PM
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well the best would be CPU-Z if you havent already downloaded it.also you will need Speedfan and HWmonitor.

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monst0r   05-04-2008 at 07:19:59 PM
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look in the bios, usually programs aren't that accurate.

------------------------------ http://tinyurl.com/5mvund
E6300@3.2ghz 1.32v | Gigabyte P35-DS3R 1.0
4x1GB C5@900Mhz | 8800GT
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Horhe   05-04-2008 at 07:20:56 PM
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jincuteguy wrote :

Actually I think i was wrong about the voltage, I just ran CPU-Z and it said the voltage of my cpu currently is 1.216V. Is there a better program that tell the voltage for the cpu more precise than this?

 

The voltage shown by CPU-Z is the real voltage. It is lower than the one shown in BIOS because of the voltage droop. But you are interested only in the voltage shown in BIOS. Oc to 3 GHz then run a stress test with Prime95 for several hours*. If it's stable, try lowering the voltege and run the stress test again.

 

* Some say 8h, some less, some say 24h. I say to think on how many hours you'll make intense use of the CPU and stress test it for that many hours + an additional half an hour. For example I never use my CPU intensely for more than 3h, when I do some rendering in 3ds Max, so I stress tested it for 3 and a half hours and I never had any problems.

 

Check this link before you start overclocking:
http://www.tomshardware.co.uk/foru [...] uals-guide


Message edited by Horhe on 05-04-2008 at 07:23:17 PM
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iluvgillgill   05-04-2008 at 07:24:35 PM
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i dont agree with the above.

if you want true stability.for your oc path you should do 8 hours for each setting.then after you decided on your final oc and then Prime it for 24 hours each for both Small FFTs and blend test.so you are 100% sure your system is stable no matter what.

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