IF you’ve a high-efficiency charger, then I’d say it’s probably more-efficient to use that charger.

The warmer you run your computer, the less-efficient it becomes, & the shorter the lifespan of the hottest chips in it ( this effect shouldn’t be significant )

e.g. increasing a CPU by 10Celsius should cut its lifespan in half.

by having more heat-generating-stuff going on in your computer, you impair the cooling of your CPU & GPU ( slightly, probably ), & that may affect your computer’s time-to-failure.

Fan-bearings may dry-out sooner, too.

hth, eh?

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