EVGA Classified SR-2 1200 Watt Continuous Power ATX No Power Supply 100-PS-1200-GR PowerCache, a high-performance capacitor that delivers an extra power reserve when and where users need it most 80 PLUS Silver Certified - 85% or more efficiency at 20%, 50% and 100% loads Designed to support quad core, Core i7 and Core i5 CPUs and quad GPUs NVIDIA Quad SLI-Ready certified and ATI CrossFire certified Six +12V output rails and DC to DC Voltage Regulator Modules ensure supreme system stability