Riccardo,

     This is off the topic of your question, but my 21164 @ 500MHz is very
cool (thanks RISC -- no fan on the heatsink, even) and the major
source of heat seems to be the power supply which is very beefy. 
It's much cooler than my K6-2 450, if you can believe that.

--
c v k @ z y b x . c o m

>
> Hello,
> I Teaded a dual pentium III for an XP1000.
> I am surprised to notice that the XP1000 is quite hot and warm on hte
> upper side of the chasis. I checked the CPU fan of the CPU and it works
> well. Is it normal for the Xp1000 to being warm outside on the upper
> side ?
> Anyone experienced overheating problems with XP1000 ?
> this model is 667MHz CPU.
>
> thanks
>
> Rick