Corsair RM850x 80 PLUS Gold, 850 Watts, Fully Modular ATX Power Supply Unit - Black : Amazon.co.uk: Computers & Accessories
The HCG GOLD 850W is the 80 PLUS Gold Fully Modular PSU and best 850w power supply with 120mm FDB Fan/LLC + DC to DC Design/Full Japanese Caps/10-Year Warranty - Antec
Corsair RM850 Series 850 Watt 80 Plus Gold Certified Fully Modular Power Supply (PSU) - PSU-850CORAXT - Tekeurope