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E8400, OC Issues.. Unstable, or False Negative? - Page 2

post #11 of 24
Thread Starter 
An update:

For the past 10 hours, I decided to go a bit crazy. I upped the VCore to 1.25. I set my RAM Voltages to 2.1, NB to 1.2. Set the FSB to 444. I'm running at 4 GHz, completely stable. Temps are okay. Proc bounces between 65 and 75 during Prime Blend. No errors whatsover.

Is there any explanation as to why this is occuring? Unstable at 3.6 ghz but stable at 4? It seems really odd.

I'm cool with the 4 GHz right now, but I don't really want it that high. I'd like to preserve the life my system for at least another year or two and don't want to cause any hardware degredation.

Any advice to bring the stability of 4 GHz down to 3.6? Or should I just stick with the 4 GHz? Will it have a huge impact on the life of the system? Any more information I should provide?
post #12 of 24
Thread Starter 
4 Ghz was stable in prime, but as soon as I attempted to launch a game, boom crash and restart.

Still trying to get the 3.6 stable. I don't want to have to set my VCore to around 1.3 unless someone else can convince me otherwise
post #13 of 24
Bump your NB voltage and see if it runs more Prime Blend. Your fail probably has nothing to do with VCore. Blend is for testing NB/RAM and that's what you should use it for. OCCT is better for straight CPU testing.

And set Trfc to 54, 2x2GB on 775 sometimes are not stable without higher T ref.
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post #14 of 24
Quote:
Originally Posted by TBRX View Post

An update:
For the past 10 hours, I decided to go a bit crazy. I upped the VCore to 1.25. I set my RAM Voltages to 2.1, NB to 1.2. Set the FSB to 444. I'm running at 4 GHz, completely stable. Temps are okay. Proc bounces between 65 and 75 during Prime Blend. No errors whatsover.
Is there any explanation as to why this is occuring? Unstable at 3.6 ghz but stable at 4? It seems really odd.
I'm cool with the 4 GHz right now, but I don't really want it that high. I'd like to preserve the life my system for at least another year or two and don't want to cause any hardware degredation.
Any advice to bring the stability of 4 GHz down to 3.6? Or should I just stick with the 4 GHz? Will it have a huge impact on the life of the system? Any more information I should provide?

from what people have told me 4.0ghz is fine as long as the temps are ok... i;ve been at at 4.05ghtz for about a month and have had absolutely no issues. what revison is your CPU e0?
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post #15 of 24
Quote:
Originally Posted by Jaxis View Post

from what people have told me 4.0ghz is fine as long as the temps are ok... i;ve been at at 4.05ghtz for about a month and have had absolutely no issues. what revison is your CPU e0?

Yea I've been running my E8400 at 4.3 for 2 years now. It's more about voltage and temps than it is about speed.
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post #16 of 24
Thread Starter 
Quote:
Originally Posted by 2thAche View Post

Bump your NB voltage and see if it runs more Prime Blend. Your fail probably has nothing to do with VCore. Blend is for testing NB/RAM and that's what you should use it for. OCCT is better for straight CPU testing.
And set Trfc to 54, 2x2GB on 775 sometimes are not stable without higher T ref.

Okay great I'll give that a shot smile.gif Can you reccomend me a max "safe" NB Voltage? I'm tempted to set it to 1.4, but I don't want to risk that without any other cooling than just the heatsink, but there is a case fan blowing almost directly to the NB.

And yes, it's an E0 Stepping smile.gif
Edited by TBRX - 2/2/12 at 8:12am
post #17 of 24
Thread Starter 
Sweet, did just as you said and finally got 3.6 GHz Stable!

Set e8400 Vcore to 1.2, Bumped the NB up to 1.26 and set the Trfc to 55, couldn't set 54. Set the RAM to 1.9 V just because.

Ran Prime Blend for 6 1/2 hours no errors

For my next step should I:

A. Go for 4 GHz, keep RAM at 800
B. Bring RAM up to 1066 (as its rated for)
C. Try to get NB Voltage lower for 3.6 GHz

Edit: Decided to Lower the NB to 1.2, both cores failed after 2 hrs 30 mins.

Put NB back up to 1.26, which matched the 6 1/2 hr stable overclock. one core failed blend after 2 hours 20 mins..

So, I'm guessing that I'm missing something here frown.gif
Edited by TBRX - 2/3/12 at 11:22am
post #18 of 24
Thread Starter 
bump
post #19 of 24
Thread Starter 
bump again, could still really use some advice
post #20 of 24
Thread Starter 
bump, still trying to go at it.
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