I know the audiophile folks replace electrolytic caps with the best low ESR (impedance) models available. The result is lower distortion and higher signal to noise ratio.
I would think that the caps on mobos, even when new, are not the best that can be bought from common sources like Digikey.
I've replaced a fair number of bad caps on mobos, but was wondering if anyone did OC comparisons when mobo caps are upgraded in this fashion.
My guess is that mobos will OC higher.