Silverstone SX800-LTI power supply packs 800W into SFX-L
 

System builders looking for lots of power and efficiency in their high-powered compact PCs should take a gander at Silverstone's SX800-LTI 800W power supply. The SX800-LTI has the highest-available 80 Plus Titanium efficiency rating and delivers 800W of continuous power from an SFX-L form factor. The company claims that combo is good for a power density of 775W per liter. For an apples-to-car-engines comparison, a Mercedes-Benz CLA 45 AMG's 375-horsepower, 2.0L engine produces over 132,000 watts per liter of piston displacement.

http://techreport.com/news/31096/sil...00w-into-sfx-l