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E8400 overclock

Last response: in Overclocking
December 17, 2010 5:55:56 AM

Hey everyone! Quick question:

Looking to overclock a new Intel Core 2 Duo E8400 (3.0GHz) using stock cooling.

I have heard that you can go up to 3.6GHz using the stock cooler, but I'd rather

My question is:

Can I go to 3.2GHz without messing with the voltages? (or other settings other than the clock speed itself)

***I am using a Gigabyte EP45-UD3L motherboard***

I'm new to overclocking and you like any advice I can get from the community, it's VERY much appreciated!

Thank you!

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December 17, 2010 11:46:07 AM

My recommendation is to do some reading on how to overclock core 2 systems. Even with a relatively small overclock like .200ghz, there are a lot of things worth knowing.
There's a basic core 2 overclocking guide here in the forums as well as the almost endless info elsewhere.

That said you can mot likely just raise the FSB and leave most everything else on Auto to make it to 3.2ghz. You will want to set pcie to 100, and make sure your ram stays withing specs. Max cpu temperature for you chip is around 70c and 100c for the cores. Personally I would use Realtemp and keep the distance to Tjunction higher than 20c. Overclocking gets kind of addicting so you might as well read up on how to do it.
December 17, 2010 3:13:02 PM

As always, thank you sportsfanboy :) 

I will try for the 200mhz with auto settings.....wont go any higher unless I get a WC system.
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December 17, 2010 3:17:25 PM

NP, you don't need WC, just a good after market fan. Hey you never know you might be able to push it higher than 200mhz on stock cooling.
December 28, 2010 12:11:49 AM


So I have been crazy busy over the holidays and have yet to try anything with my 3.2GHz OC

I should have time to mess around with it later tonight, but wanted to make sure I'm changing the correct fields.

Going for a small OC like 3.2, i have been assured that leaving voltage settings on AUTO should be fine....

So the only 2 setting I should have to change will be:

FSB to 200(?) and PCIE to 100 ?

I just want to make sure before I mess with anything :p 
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a b K Overclocking
December 28, 2010 3:10:04 AM

Your mobo should default to FSB of 333 and 9 multiplier to make 3.0ghz. So you will need a FSB of around 355 to get 3.2ghz. Make sure to set the ram to 1:1 or 710mhz and proper ram timings and voltage.
December 28, 2010 1:50:16 PM

Here's what I'm looking at:

So I should set PCIE to 100 and change the Fine CPU clock setting to +0.022?

Just want to make sure

(sorry about the green :p  I forgot o turn off the effect on my phone...)" alt="" class="imgLz frmImg " />
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a b K Overclocking
December 28, 2010 3:15:41 PM

pci to 100, host control to enable, you then overclock through the host frequency.
December 28, 2010 4:01:05 PM

And what should I set the host frequency to?

(btw running stock I hit 59C load in prime95)

temps shouldn't be an issue at +200mhz?

Thanks again!
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a b K Overclocking
December 28, 2010 4:51:56 PM

If your going to leave voltages and most other things on auto you can just try 355 for 3.2ghz
December 28, 2010 6:45:34 PM

Thanks again! Will try tonightand post results!
December 31, 2010 2:21:16 PM


Running the above clock settings (355 and 100 on PCIE) ~ 3195.13 MHz Everything looks stable (temps stay below 62C at load)

I had one question on RAM tho.

At those settings it shows my RAM clock at 426.5 MHz but max specs for 6400 is 400 MHz .....right?

Is this something I should be concerned about?
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a b K Overclocking
December 31, 2010 4:15:22 PM

If it's running stable, then you can leave it, or you can set the ram up manually and run a 1:1 fsb/ram ratio.
December 31, 2010 4:26:24 PM

Its stable, but I dont like the idea of running my RAM over its spec...

If you have the time could you post a step by step on setting up a manual 1 : 1 ?

As always, thank you :]
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a b K Overclocking
December 31, 2010 5:42:43 PM

Change the system memory multiplier under dram control until your ram is running twice the speed of the FSB(host frequency)