overclocking my e6400 on stock cooling

Xarick

Golden Member
May 17, 2006
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I am wanting to OC my e6400 to 2.8ghz (2.13 by default) simply by razing the FSB from 266 to 360 (1066 to 1440). I want to do this on stock cooling. Right now idle with Artic silver 3 I run about 36c.

Is this a good idea? Is there a better way to do this?
 

Zap

Elite Member
Oct 13, 1999
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If your motherboard and RAM are capable, then go for it. Two things though...

Why the EXACT number of 360MHz? If it were easy to hit, would you want more? If you couldn't hit it stable, would you be content with 340MHz or 310MHz?

You would likely have to drop your memory multiplier. For instance if you were running DDR2 at 800MHz, raising the FSB without lowering memory multiplier will push your RAM to 1080MHz or so.
 

Xarick

Golden Member
May 17, 2006
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Just in basic testing I can hit 360 and still boot into the system fine.
I am running pc6400 at 800 I believe so ya I would need to lower that,
plus I would need to lock my pcie to 100? or 120?
and my pci to 33.33?
 

Denithor

Diamond Member
Apr 11, 2004
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What motherboard are you using? That can have as big an impact as your cpu.

I previously ran an e6400 (first production batch) on 965P-DS3 and it ran 2.66GHz totally stable but required a little extra voltage to do it (1.36V). Ran about 60C with stock cooling under stability testing. About a year later I upgraded to an IP35E and the same cpu ran 3GHz at stock voltage (1.325V) at 54C still under stock cooling.
 

Xarick

Golden Member
May 17, 2006
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asus p5q se
I know I can push it to 2.88ghz by just adjusting the FSB at stock voltage.
 

Nohr

Diamond Member
Jan 6, 2001
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I was able to run a E6300 at 2.8GHz (400 FSB) with the stock HSF. It would even do it with less than stock voltage, 1.30V. It would hit upwards of 75C during an Orthos test but it was stable. I wouldn't expect any problems with a E6400 if the rest of your gear is capable.
 

amenx

Diamond Member
Dec 17, 2004
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Should be able to do 3ghz. I did that on an e6400 on a DS3 with stock cooling, stock volts (1.325v) no problem at all.