Some overclocking help please..

Admiral Huddy

Admiral Huddy

Admiral Huddy

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Joined
17 Feb 2003
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I'm trying to up a Q6600 from 3.4GHz to 3.6GHz but seem to have come accross a stopping point.

I've changed the following setting:

FSB = 400MHz
Vcore = 1.525v
PLL = 1.5v
FSB Term = 1.4v
NB = 1.4v

RAM = 800MHz on slack timings.

This boots into Windows but Orthos fails after 2 minutes on cores 2 & 3. Cores 0 & 1 continue without any problem.

Temps on 100% load are fine:

0= 47 oc
1= 46 oc
2 = 44 oc
3 = 46 oc


So I'm wondering what I've missed?
 
You could always try upping the NB to 1.45-1.5 or so if temps are fine. I need mine at that to be totally stable, although I have 4x1gb RAM.
 
It's an Asus P35 P5KC.. I'll have to check later what NB increments I have. I have a feeling that the next setting after 1.4v is 1.5v, but I could be wrong. I'm not even too sure what the stock voltage is for the NB as it does say.

I'm also wondering about vdroop?
 
well I dont think that board has loadline calibration didnt on an early BIOS when I had one..

You should be fine to set both the FSBTerm and NB to 1.5v, PLL can go to 1.6v, most importantly make sure you are running on the 333mhz FSB to Northbridge Strap.. would set that first see if it makes a difference..

Also not sure what CPU Ref Voltages you have on that board but set it to 0.67 if you have them
 
Admiral Huddy said:
ahh I don't recal seeing the FSB to NB strap option.. Again I'll see when I get home later and post back..

OT, where in Ipswich do you live?
Click to expand...

The Asus boards are most stable on the 333mhz Strap... always first thing to set.. you might want to look at the guide I wrote on Asus P35 boards and Q6600 probably know most of it but might find something useful.. will find a link

Edit: Here http://forums.overclockers.co.uk/showthread.php?t=17825087

Just of Bramford Road
 
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Cheers.. I'll have a look at that later - in fact I've just printed that off for the train home tonight..

I have family living in Whitehouse.. Big family ;)
 
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Pneumonic said:
Not so far from me then :)
Click to expand...

Ok,I read through your notes - Superb! but didn't get chance to make any changes last night and test them. However, I did make note of some the settings I have:


NB voltage settings = [Auto], 1.25, 1.40, 1.55 and 1.7. So i'm a little worried about jumping from 1.25 to 1.55

Load Line = [Auto], Enabled, Disabled.

FSB strap to NB = [Auto], 200,266,333,400

and there is a "Clock over charging voltage" = [Auto], 0.7, 0.8, 0.9, 0.10. Not sure what this is?

ot.. Do you know the Mullans?
 
Admiral Huddy said:
Ok,I read through your notes - Superb! but didn't get chance to make any changes last night and test them. However, I did make note of some the settings I have:


NB voltage settings = [Auto], 1.25, 1.40, 1.55 and 1.7. So i'm a little worried about jumping from 1.25 to 1.55

Load Line = [Auto], Enabled, Disabled.

FSB strap to NB = [Auto], 200,266,333,400

and there is a "Clock over charging voltage" = [Auto], 0.7, 0.8, 0.9, 0.10. Not sure what this is?

ot.. Do you know the Mullans?
Click to expand...

If that dosn't work, push your NB to 1.55 (watch temps) and VTT up a couple.

NB: With my quad i found 3.5 -> 3.6 a massive jump in voltage.
 
ok I made a few changes as suggested above but still no luck.

FSB = 400FSb

NB voltage 1.55 (AUTO - bluescreened, 1.40 - Orthos failed after 2 minutes)

Load Line = Enabled

FSB strap to NB = 333

Orthos ran for 5 minutes then again, cores 2 and 3 failed.

I'm thinking that this isn't the Vcore or NB voltages and something else.

Any ideas?
 
Have you tried raising the vcore to 1.575 or 1.6v or so just so see if it works? Easy way to find out if you need more voltage or not.

If you still have problems at 1.55 NB, then it's fairly safe to say that NB is not your problem.

Also a longshot, but is your PSU enough to handle a Q6600 at 3.6?
 
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