LC-POWER 850 W Full Modular Power Supply Unit 80 Plus Platinum 135 mm Fan ATX PSU,92% Efficiency,Running Quiet,5xPCI-Express,for Gaming Computer,System Upgrades : Amazon.co.uk: Computers & Accessories
Corsair HX850i 850 W 80+ Platinum Certified Fully Modular ATX Power Supply (CP-9020073) - PCPartPicker
ASUS ROG Thor Platinum II 850W Power Supply 80+ Platinum