E8400 max overclock?

If you have a P5Q then I absolutely recommend swapping. The P45 chipset is ideal for Wolfdales and the P35 is really quite good for the Q6600.
 
Thats interesting, might consider that later on when I can be arsed to pull apart the P5Q rig.
Do you think the P5K will be OK getting the Q6600 to 3.4ghz like it is now?

Here are some actual Bios shots of the P5K with the latest Asus Bios installed:

Any idea what Clock Over-Charging voltage is?

p5k1.jpg

p5k2.jpg
 
After seeing this thread I decided to have a crack with my old E8400 C0 revision that i've had for ages. From what I recall i struggles to get past 3.6Ghz before but here's my latest effort... Shame I can quite seem to get 4Ghz stable but slightly concerned by the temps so don't want to crank the voltages much further... Any tips would be great

 
Seemed I had just hit a Vcore wall, upping it helped a great deal, just gonna settle for this but bring the voltages down one by one untill it just remains stable

 
Yeah that's why i'm bringing the vcore down bit by bit to see what I can get away with.. Haha was at 99 at one point! Next step if I can be bothered will be to lap this cpu as i'm sure it's a bad one as the temps have never been pretty, using a thermalright Ultra-120 also
 
gurusan said:
ah, lack of CPU reference might be what's limiting you, the P35 chipset is not ideal for wolfdales.

In my opinion 1.424V is ok and your temps look great.
Click to expand...

Mate I have just found the CPU and NB Reference voltage options, any advice on what I should set them too? :D
 
Ooh this thread reminds me of my old overclocks.

I still have this CPU kicking around....somewhere.

Almost the absolute max FSB on my X38 mobo

316397.png


Be VERY careful with voltages on the CO Wolfdales. My ESQ9550 started to suffer throttling a few months back. The ES E8500 died completely randomly. Try not to go above 1.45v. 1.35V is the sweetspot IIRC.

Remember that what you think is stable might not be real world stable.
 
I've got my E8500 stable at 4.4GHz but my voltage is already at 1.4volts.

I believe that the recommended maximum is around 1.36v for the E8000 series

I'm on 464bus but I might be able to increase this to go with the voltage.

I was able to get it up to 4.0GHz on stock so...

I do like these chips. I fail to see the need to upgrade these systems atm
 
To winston and coolmasta, have you tried it with speedstep turned off, not sure if either of u have it on or off.

But if u try it with it off, you will find that you will require far less vcore for the same clocks.

If u take a look back at my post with screen shots in @ my 4ghz one, that has speedstep turned off and requires just under 1.3v, with speedstep on i had to use over 1.4v.

Its worth a tinker with.
 
I'll check it out as I can't remember off the top of my head, most things are disabled but can't remember that one - I'll let you know, thx fella
 
It's called EIST which is disabled and I have also disabled C1E but should I leave the others enabled?

LIMIT CPUID MAXVAL................. - DISABLED
C1E FUNCTION....................... - DISABLED
EXECUTE DISABLE BIT................ - ENABLED
VIRTUALISATION TECHNOLOGY.......... - ENABLED
EIST FUNCTION...................... - DISABLED
 
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