P4 1.6M boots up at 1.21 on a Desktop Epox 4BDA2+

Ray06492

Diamond Member
Jan 26, 2001
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I installed a P4 1.6 M in a Desktop Epox 4BDA2+ Motherboard.

When I turn the PC on , it shows: P4 1.2 12x100

I've looked in the bios, and I can't see where to change the multiplier.

How do I get this chip and mb to operate the P4 1.6 at the correct speed?

Thank you,
Raymond

 

DrGreen2007

Senior member
Jan 30, 2007
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12 is the 'speed step' multiplier for P4M chips

ie: if it was in a laptop, unplugged and running on battery, it would run at the 12x multi, but the same laptop, plugged into AC, would run at the 16x multi

All P4M would run at 12x (the lowest) multi in a desktop board, even my 3.2 p4m ran at 12x
You could look to see if there is a setting to adjust the front side bus...FSB maybe to 133fsb, that would bring it up to 1.6, but the chip may even run 200fsb or 166fsb, youd have to try

(Hi Ray)
 

techs

Lifer
Sep 26, 2000
28,559
4
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In the bios for that mobo you should have Frequency/Voltage Control settings area.
In it check your Cpu FSB/Speed. If the mulitiplier is 12 as the previous post indicates than to get to 1.6 ghz you should set the Cpu FSB to 133. Your board probably defaults to the 100 fsb which is giving you the 1.2ghz speed.
Be aware that you are using the P4 M cpu which is the mobile cpu and doesn't appear to be supported by that mobo, so it may just be the interaction between the board and the cpu since what the cpu is telling the mobo may be interpreted as a 1.2 chip.