Ultra U12-42506 Lsp Series V2 650-Watt Power Supply 650-Watt PSU; offers 650W of power to handle intense PC operations SLI&#47;Crossfire Ready; install multiple GPUs to runs demanding games and software 80&#37; Energy efficiency; reduces energy consumption and costs Fan cools the PSU with sufficient air circulation 135mm Fan - Allows for cooler and quieter operation