Not so long ago a 400 watt power supply was considered plenty, and then quickly 500 watts became the answer to the commonly asked question of what the average Jane or Joe should use in their upcoming computer build. These days 620 watts or slightly more seems to be the “better safe than sorry” answer, but is all this power really necessary? Sure almost anyone can have four times the CPU’s or even four times the GPU’s than back when 400 watt power supplies were considered powerful, but that doesn’t mean the typical computer user has a Quad-core CPU (or two!) let alone Quad-SLI or Tri-Crossfire.

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