BSOD when OC'ing

[cnick79]

I'm trying to OC my P4 3.4ghz Northwood. When I set the FSB to 230mhz I have a hard time booting to windows without seeing some sort of BSOD. I know it's not my memory because I relaxed the timings to 3-4-4-8 and even set the cpu:ram ratio to 5:4. I would find it hard to believe that's the max my CPU could go. Are there any other tricks I can try to push it more? I also locked my agp/pci. I do have 1 raptor drive setup as a boot drive, could this be the problem?

 

[lethal_dosage]

Try raising the cpu voltage a bit, or just backing the FSB down a bit.

 

[fore1337]

you should try incrementally increasing the Vcore of the CPU until the computer gets stable again.

...looking for OC notebook...

same mobo as you, but with a 3.2E
this is what I ran stable: everything @ 1:1 ...each setting below
Hyper Threadding == OFF
passed Futuremark2k5, farcry & D3 benches

FSB Vcore
225 - stock
230 - stock
235 - 1.41v (increased by 1 notch) modified CPU throttling in BIOS from 50% -> 75% -stable
240 - 1.4625v
I never got it to stick @ 250FSB. maybe i should have laid off the 1:! ratio

hyper Threadding == ON
FSB Vcore
230 - 1.41v
235 - 1.4375v
...never tested further because I don't run HT in games.

hopefully this gives you a bit on insight into your board. It was my absolute favorite to OC on.

 

[cnick79]

I had my CPU voltage over 1.60. I think I had it at 1.625. It's stock voltage is 1.50-1.55 (one of them). I did a search on other people with the same problem and couldn't find a clear solution. Some people mentioned it could be the power supply not providing enough power at times. I would hope this isn't the case because I have an Antec TrueControl 550w PS. I do have 4 case fans, 3 HD's, DVD ROM, 12v water pump, floppy drive and a 6800U all sucking power. I'm going to hook some of these items to another PS I have and run dual power and then test it. This way here I'll be able to tell if it's my PS or not. Not sure where to go to next.

 

[fore1337]

My main problem in the beginning was a crappy Ultra X-Connect 500W PSU.

The northwoods can handle a bit higher voltages spectrum than the prescotts. On pressys, you shouldn't go above 1.6... but you have a northwood, so don't worry too much.

These numbers are from my first stint ever of OCing a P4 so I was being very careful.

 

[Jonsey]

Well, you have a 17 multi, so 230 x 17 = 3910. Most Northwoods couldn't do that, especially on air cooling. You may be asking too much from your chip.

 

[cnick79]

Well, you have a 17 multi, so 230 x 17 = 3910. Most Northwoods couldn't do that, especially on air cooling. You may be asking too much from your chip.

Yea, I think I am. I bumped it down to 220mhz and now I'm having freezing problems. That's also after I hooked up my video card to another PS to draw power away. The strange thing is CPU-Z is reading my cpu volts lower then my BIOS. I have my cpu volts at 1.60 but cpu-z is reading it around 1.55. I think i'll push it to 1.65v and see how far I can go from there. This is my first time OC'ing and this entire computer project has been nothing but headaches.

Oh, I also have water cooling.

 

[Santos L. Halper]

Yea, I think I am. I bumped it down to 220mhz and now I'm having freezing problems. That's also after I hooked up my video card to another PS to draw power away. The strange thing is CPU-Z is reading my cpu volts lower then my BIOS. I have my cpu volts at 1.60 but cpu-z is reading it around 1.55. I think i'll push it to 1.65v and see how far I can go from there. This is my first time OC'ing and this entire computer project has been nothing but headaches.

Oh, I also have water cooling.

If I remeber correctly, Abit is notorious for undervolting.

I have an Abit IS7 and the voltages I set in the BIOS and the voltages CPU-z read and always different. CPU-z is always lower than the BIOS.

 

[cnick79]

So CPU-Z is more accurate? If that's the case I'll bump up my vcore to 1.65 or 1.675 and should be ok. When I find out my max fsb I can reconnect all my devices to the same power supply and see if I get any freezes or BSOD. If I do then I get a new PS. I'll then reset my mem divider to 1:1 from the current 5:4 and see if my mem likes what it's dealt.

 

[cnick79]

Well, you have a 17 multi, so 230 x 17 = 3910. Most Northwoods couldn't do that, especially on air cooling. You may be asking too much from your chip.

What would be nice if I could run 16x250mhz with 5:4 divider. That would give me 4ghz even and my RAM would be at 200mhz.