You don't get my point. All 80+ certified PSU are having 80% more efficiency, but asa man jud ang pinaka peak niya? Mao ni ako pasabot. Sa imo example bro, pinaka efficient cya sa 50% load kay this is where the
maximum power transfer occurs. Beyond or below sa 50%, dili na ma achieve ang maximum power transfer.
If mangutana ka ug EE/ECE graduate bro, kahibaw na cla asa dapit mahitabo ang maximum power transfer. Sorry kaau nga specific ko sa ako 50%.
Before, I thought buying an 850W 80+ Gold certified PSU is better compared to Bronze certified since basta Gold 90% plus ang PF niya but I was wrong because it will depend on the load.
So, kung gusto tipid kaau sa koryente, compute first the average power comsumption of all components then buy a PSU which has more or less a rating of twice of that computed power.