Do laptop power adapters have the same power efficiency problems as with desktop power supplies?
Question not long enough to fit in title...as above anyway, Thanks!
as with all these things, probably yes.
laptop adapters also have their own efficiency rating, unrelated to eco plug load's 80plus test.
laptop adapters have a little area on the information label that mention the efficiency level, ranging from I to VI, with level VI being the most efficient.
most laptops shipped during the windows vista era will have adapters conforming to level IV, while most laptops shipped during windows 7 era will have level V adapters.