OCZ 850W Z Series Modular 80PLUS Gold High Performance Power Supply compatible with Intel Haswell Core i3 i5 i7 and AMD Phenom- OCZZ850M 850 Watts of Continuous Rock-Solid Power (940W Peak) Ultra-Quiet 135mm Double Ball-Bearing, Thermally-Controlled Fan. Ultra-High Efficiency (over 90%) 80 Plus Gold Certified NVIDIA SLI Certified 5 year warranty backed by OCZ's exclusive PowerSwap Warranty replacement program. No more endless return-for-repair loops!