>When he examined the motherboards, both had capacitors around 
>the CPU that had visibly 'ballooned'

A good reason to look for motherboards with either Tantalum capacitors or 
Organic capacitors.  Its a marketing point I'm seeing these days, and as a 
design engineer, I can say its worth looking for.  The ESR in typical aluminum 
electrolytics is considerably higher.  These caps are at the output of a 
switching regulator on the CPU that is handling many amps.  This creates large 
charging and discharging currents at hundreds of KHz rate.  Any ESR (internal 
series resistance) turns some of this into heat.

Wilton
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