I'm trying to figure out what the true power requirements are for video cards (no card in particular). I only see on retailers like Newegg that a card requires 300W or 450W power supply, or like 24A or 40A. I know that the amp rating is more important, but how many amps do the cards really use? And many cards only list watts required and nothing about Amps.
I've used eXtreme Power Supply Calculator before, but where do they get their information? If the manufacturers don't provide this info, how do they know what kind of PSU your system needs?
I've used eXtreme Power Supply Calculator before, but where do they get their information? If the manufacturers don't provide this info, how do they know what kind of PSU your system needs?