"In order to generate one kilowatt of continuous power from the existing 850 SSI platform, the Turbo-Cool 1KW's power modules were engineered for greater thermal efficiency and key components throughout the unit were upgraded to handle the additional current. The result is an EPS12V/SSI/SLI power supply with unprecedented output (66 amps total on the +12VDC rails) in a form factor that fits most ATX cases."
Turbo-Cool 1KW PSU Specifications:
The Turbo-Cool 1000W PSU will ship for a very high price tag, it will retail for $489, but will have a 5-year warranty.
1000W Continuous and 1100W Peak Fits Std. ATX Cases (20” min. depth) +12VDC Rails Total 66A (70A Peak) High Efficiency (85%) with .99 PFC Amazingly Quiet Cooling System Complete Array of Output Connectors EPS12V, SLI, and SSI Compatibility 5-Year Warranty; Unbeatable Support
Personally I think this is just overkill. There's no desktop system on the market that even needs anywhere close to 1kW of power and most people have more than enough with a 400W PSU. Even for the future 1000W is still overkill as the overall tendency seems to be to lower the power consumption of computer systems.