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Max Vcore for 2.8GHz?

R

Revo

Member
Hi there, I was trying to overclock my P4 2.8GHz to 3.5GHz, I have tried a Vcore setting of 1.675v but was having problems with the system not posting. I was wondering what is the safest Vcore setting you can make with a this CPU? My system is as follows:

Abit AI7
P4 2.8cGHz
1Gb Crucial PC3200

Any advice would be much appreciated.
 
What would happen if I exceeded 1.7V and has anyone tried going over this value? Also, Does this limit apply to rigs with water cooling (not that I have water cooling at the moment)?
 
Yes, voltage kills, no matter what cooling you use. You can kill a cpu with too much voltage, if you have a $1,000 peltier that keeps it below freezing.
 
Originally posted by: myocardia
Yes, voltage kills, no matter what cooling you use. You can kill a cpu with too much voltage, if you have a $1,000 peltier that keeps it below freezing.
Click to expand...

Vapor phase change cooling or refridgerants are the only cooling systems that cost that much. The strongest peltier money can buy is under $200... and would require incredible cooling to stop it from melting.

On the prescott i wouldnt go over 1.5v, on a northwood anything over 1.65 is pushing it.
 
Thanks for your replies everyone you've been a big help. However, I can't even get this thing stable at 3.2GHz! Pretty crap OC me thinks.
 
sorry to hear about your crappy overclock. i got my 2.8c to 3.5 with 1.625v on my abit ai7. but in the bios it only shows the vcore as 1.6v.
 
The difference between 1.625 and 1.6 is negligable there should be no difference between the two.
 
Cyman what stepping is your CPU and which type of memory are you using?

By the way do any of you know whether Abit sorted out the BIOS problem regarding the dividers? Maybe that is the reason whay I'm not being able to get even 3.2GHz. I updated the BIOS using the FlashMenu program but I don't know which BIOS revision it has been flashed to. So do you think it could be something to do with the Abit divider issue? If so how can I make sure I get the BIOS revision that sorts this out?
 
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