I would expect the Mobil chips to use less power AND run cooler...
Are you CERTAIN your MB supports the Mobil Chip?
Is the core is correct. Also the FSB and voltages?
What MB model and revision,  and BIOS revision do you have?

Did you buy an M or an MP?  See the following chart:
http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_608,00.html

                                                Rick Glazier

From: "Liz & Ray Hornung" <[log in to unmask]>
> Today I changed my CPU from an AMD 2100 to an AMD Mobile 2400+.  I also
> upgraded the CPU fan to Thermatake Silent Boost rated to AMD 3200+.  I
> applied the usual thermal paste, a quick easy switch. Powered up fans are
> all spinning.
>
> In the BIOS I changed the FSB to 166 and and adjusted the multiplier until
> we were running at about 1.9 MGhrz.
>
> Problem is the CPU temperature hit about 70 deg C before I turned it off.  I
> clocked it down to about 1 MGhtz and it's settled at 56 Celsius.
>
> I know the Mobile CPUs run hotter, but how hot?

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