If you’re paying for a 2.8GHz processor – why slow it down to 2.2GHz to prevent it failing?
When the going gets hot - the best keep going.
Electronic systems generate heat.
Powerful electronic systems generate more heat. That wouldn’t be a problem – if it wasn’t the case that excessive heat causes electronics systems to degrade and, eventually, fail.
The situation is exacerbated when systems are deployed in tightly-confined spaces where air flow is at a premium – and cooling fans can’t be applied because they consume precious power, add weight, and, being mechanical, are a source of unreliability.
A better solution.
There are two solutions. One is to ‘throttle back’ the processor – make it run at less than its design speed so it generates less heat. The better solution is to apply advanced cooling technologies – like those from Abaco: Heat Pipes, Nano Thermal Interface, Thermal Ground Plane, Dual Cool Jets, and Thermal Management Technology Bridge.