It's been quite a while since the first enthusiast targeted 1000 watt power supplies hit the market. There were 1000 watt power supplies before, mainly targeted at multi-processor servers and "heavy-iron", but never before had such a high-wattage power supply been targeted at the end user. The first units were from PC Power and Cooling, which were launched at around the same time as Nvidia's GeForce 7950 GX2 graphics cards, the first card capable of running in a Quad SLI configuration for four graphics cores. While these graphics cards certainly didn't require the massive power loads which a 1000W power supply could deliver, the coincidental timing of these two product releases was done in such a way that many buyers actually believed that they needed this kind of power supply.



Link: HotHardware