My current Build:
Intel I7 2600K @ 4.6GHZ 1.38V with Noctua NH-D14
G skill 8GB DDR3 2133 MHZ (F3-17000CL11D-8GBXL) 11-11-11-30 2N @ 1.5v
MSI Z68 GD65 (G3) BIOS N83
MSI GTX 580 Lightning
Corsair CSSD-F120GBGT-BK Force Series GT 120GB SSD
Corsair CSSD-F60GB3-Bk Force Series 3 60GB SSD
Seagate HDD 7200 Rpm 1TB ST31000524AS
Seagate HDD 7200 Rpm 1.5TB ST31500341AS
HAF X (X4 Megacooler 200mm Fans, Noctua S12B FLX fan, TY 140 fan + Demciflex fan filters)
Windows 7 64 bit Ultimate
LG 24inch LCD W2468L
Corsair AX 1200 overkill given that 50% load is the sweet spot these days for efficiency. I use my build for gaming 75% of the time.
Which Wattage / PSU is the best for the above build, £270 max cost