It's by no means being overworked. It's basically a "marketing tool" ...instead of calling it a "power save" feature when speed isn't needed, they call it a boost feature. The CPU has a TJmax of 105C.... I doubt you'll ever hit 55
If it had any chance of damaging or accelerating wear on the CPU, it wouldn't be covered by the warranty.
Thank you for the info. I think I'll turn it on for my desktop.
But why does my 2 month old laptop's processor heat up to 70-90C when using turbo boost, while rendering HD videos? This, using the laptop on the table, not on the bed. 80C is very harmful, ain't it? When boost is off, it hardly crosses 60C.