E6700 cant reach 3.3ghz

[Alexraptor]

Right now im running my E6700 at 3ghz with a 1333mhz FSB and 9x multiplier.
But i want the beutiful 3.33ghz that so many people seem to reach and go beyond.
Whenever i try to run 333 with x10 multiplier it boots up fine and all but almost immediatly the second core causes an error in Prime95 while the first core continues on with the torture test.

FATAL ERROR: Rounding was 0.498677743, expected less than 0.4
Hardware failure detected, consult stress.txt file.

Ive checked the RAM and it seems fine, ive turned off spread spectrum and even tried upping the Vcore voltage a bit but it does not seem to work.
Am i missing something?

 

[error8]

Originally posted by: Alexraptor

Am i missing something?

Tell us more. What is the speed the ram is running? Also , what is your Vcore now after upping it a bit? Also, temperatures and cooling.

 

[Alexraptor]

The RAM is is certified for 800mhz @ 2.0v, and ive lowered the ratio so it runs on just that.
My Vcore now is set to 1.26, though the HW monitor in the bios shows 1.23v
At the current 3ghz it idles at about 33c and goes up to 56c under full load, this is using the stock Intel heatsink and fan with Artic Silver 5.

 

[error8]

Your Vcore is the culprit. You have to increase it further.

 

[OCGuy]

Originally posted by: error8
Your Vcore is the culprit. You have to increase it further.

That is my guess. You have alot of room with the 65nm as far as safe voltages....

 

[Alexraptor]

I said its set to that "now". When i attempted to get up to 3.33 i had it around 1.29 showing on the BIOS HW monitor. Before it was 1.28 at 3.2 but the snag was hit at 3.33.

 

[error8]

Originally posted by: Alexraptor
I said its set to that "now". When i attempted to get up to 3.33 i had it around 1.29 showing on the BIOS HW monitor. Before it was 1.28 at 3.2 but the snag was hit at 3.33.

We got that man! You don't seem to realize that 1,29 V for 3.3 ghz is low. 65 nm dual cores, such as yours, can be kept at 1,5-1,55 V with good air cooling, without killing them.

Of course, that with the stock cooler you are not allowed to push the voltage that high, but you should have good temps even at 1,35 V or so.

 

[Alexraptor]

That large a voltage difference between 3.2ghz and 3.3ghz?

 

[error8]

Originally posted by: Alexraptor
That large a voltage difference between 3.2ghz and 3.3ghz?

Why not? For example my cpu hits 3,8 ghz with 1,37 V in bios, but for 3,9 ghz I have to increase it to 1,41 V.
0.04 V for 100 mhz.

Now, I'm not saying to increase it straight to 1,35 V. Do it in small steps and see where it gets you.