POWER SUPPLIES (PSU) RUN BEST AT 50-70% LOAD--
Running a power supply at max load will wear it out prematurely. And, a cheap PSU at max load can fail with a fire hazard because they may be improperly rated. A 2000W cheap PSU on a 110V (USA) circuit would likely overload the 110V circuit and could possibly cause a house fire, not just an explodong PSU.
A cheap PSU will explode when run at max load. --scryptr
Thats what I wrote often before. NEVER buy cheap. You only have one life. Saving a few bucks with cheapest hardware is just stupid.