Overclocking gives bsod at windows startup..

A

awdark

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Mar 22, 2003
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I have been overclocking my primary computer think its #1 in my sig.

What I dont understand is why windows xp blue screens at startup when I knock my fsb up to something like 185fsb. Pretty sure going from 166 to 170 gives me a similar problem.

Does my computer run stable at 185? Yes.. I use the unanimously hated clockgen to overclock.. about 195 is my max for a good 2 minutes of functionality then it freezes so I know thats my limit. At 185-195mhz I can encode videos for hours at a time and it will be fine.

So is there any logical explanation for this?

Note:
Overclocking is limited by dunno what. I cant increase my vcore but can increase vdimm which is really stupid. Thats what I get for getting a cheap DFI board. My cooling should be adaquate its a coolermaster aero7 aluminum thing. Also the above speeds are the speeds of the ram, so im too lazy to multiply by 2 for fsb.
 
Why aren't you increasing the FSB in the BIOS?

Flash it to the latest version for your motherboard, then increase the Vdimm all the way and boost your FSB to 200. With Mushkin PC3200, a nForce2 400 mobo and a Barton processor, you should be able to at least do that.
 
Well as i said, it doesnt boot right when I overclock through the bios.

I checked, and my bios is the lastest avalible...

Um what voltage for vdimm is safe I think its at 2.6 volts right now.
 
Oh yeah.. but why do I blue screen as a result of overclocking?
 
Double check all your BIOS settings, because with that hardware you have a 200 mhz FSB no problem at all. Is it an unlocked barton? That could be a reason why you are having trouble.
 
I think my bios settings are fine as most of it is stock.

Actually, I dont know if my barton is locked or not because my bios doesnt give me an option to change the multiplyer.

In fact.. my dfi nforce2 400al has a lot of limitations, no cpu voltage adjust, no multiplyer adjust, no control in thermal shutdown, and uhh a few other things that "normal" boards should have.

H-money, I know my hardware does survive at 185fsb when I overclock with clockgen because it can encode videos for hours and hours just fine.. will get a bit hot but still work.
 
awdark said:
Oh yeah.. but why do I blue screen as a result of overclocking?
Click to expand...

Because the memory apparently isn't able to stand the speed you're running it at while at the voltage and timings that were set in the BIOS. Could also be because of the voltage on the processor (even though you can't do anything about that, it seems).
 
Okay, thats logical but does overclocking through software differ from overclocking through say the bios? I thought either way the front side bus changes.
 
I bet the problem is that at 185+, you're not ACTUALLY stable even though you think you are. Video encoding is NOT a good test of stability, because encoding errors may not be very noticeable. However when it comes to loading the OS, even slight errors can cause major problems.

Run a REAL stability test, like Prime95, and I bet that you'll find that your system isn't nearly as stable as you think it is.
 
awdark said:
I think my bios settings are fine as most of it is stock.

Actually, I dont know if my barton is locked or not because my bios doesnt give me an option to change the multiplyer.
Click to expand...

Honestly, if you don't remember manually unlocking it, than I highly doubt it is unlocked. :)
 
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