Pentium 4 640 3.2ghz overclocking problem

Fitzy9994 · 12 Mar 2007 at 18:26

Hi there i have overclocked my P4 3.2 to 4ghz with a FSB of 250 x 16. On CPU-z it tells me that i'm using 1.5v, which i selected in the bios.

If i go somewhere lower (1.48?) my windows wont start. I also manually set my ram speed to 555 instead of a divider, im not sure if im doing this right though.

Is there anyway i can set the voltage to a little bit lower without it having to crash on boot.

Thanks in advanced.

Fitzy9994 · 12 Mar 2007 at 20:31

anyone?

Fitzy9994 · 13 Mar 2007 at 07:00

no one??

Fitzy9994 · 13 Mar 2007 at 13:31

fine then dont help

steve258 · 13 Mar 2007 at 15:07

P4 640 is the 90nm Prescott so it will be hard to get past 4Ghz without a very decent cooling, if it won't boot under 1.5V then that is just the voltage it needs to operate at 4Ghz.

Not sure how the mem divider or RAM speed option works on your mobo but by default without running any divider the RAm should be at DDR500 when the FSB is 250Mhz.

Just watch out for the temperature.

Fitzy9994 · 13 Mar 2007 at 15:39

ah right ok, thanks for your reply steve258, i was just curious, the temps seemed to wierdly fine at 25c idle.

inam22 · 13 Mar 2007 at 18:51

Fitzy9994 said:
ah right ok, thanks for your reply steve258, i was just curious, the temps seemed to wierdly fine at 25c idle.

what cooler u r using mate my idle temps r 41-42 and load 53-54 with artic freezer pro 7 your temps seems very low tbh what software u r using to read temps anyway

TechnoCorruption · 13 Mar 2007 at 20:30

Are you using a Abit board mate, there temperature probes were always off around the prescott generation, the uguru software is pretty unreliable when it comes to temp/volt monitoring.

Fitzy9994 · 14 Mar 2007 at 07:46

im using a freezer 7 pro on an P5N-E SLI mobo. I'm also using speedfan and everest to monitor my temps.