i also bought one of this recently...5volt line always stays at 4.87 to 4.89 and im a little worried at first.so far, it never dropped down even under load which means its ok.and for their website, its korean. only prob i have with this PSU is cable management, it has too many wires and they are quite long.
build im using it with:
X4 955 stock
HD 6670 Sapphire
1 hdd WD 500
4 120mm fans
I think this is the same model with rapter 2 600w.http://www.hardwaresecrets.com/article/Aerocool-E80-600-Power-Supply-Review/1125
The Korean site:http://www.heckorea.co.kr/sub/product01.html