Help with selecting PSU for new build

will420

Distinguished
Apr 13, 2009
10
0
18,510
Okay here's the build:

CPU: Intel 3770K
MB: Intel DZ77GA70K
RAM: G Skill 16GB (4x4GB) 1600MHz
GPU: GTX 670 (Not sure exactly which one yet)
SSD (boot): Intel 520S 120GB SATA 3
HDD (storage): Western Digital 3TB Green SATA 3
Case: Corsair 550D

My current PSU is 1200W for my 3 year old build. It's been in use almost continuously the entire 3 years so would feel much safer buying a new one. Also I believe 1200W is extreme overkill for my new build and I should be looking at something around 550W. I would prefer something with an 80 PLUS rating. Price isn't really an issue but I don't want to be paying for anything I won't need. Any suggestions? :)