When building on a budget, the EVGA 500W 80 PLUS is a great choice at a low cost. Supporting 40A on a single +12V rail provides more options without having to reduce your component requirements. Save space with the 500W's compact design, well-placed power switch and fully sleeved cables. The 500W offers the connections and protections needed for basic system builds. -80 PLUS certified, with up to 80% efficiency under typical loads -High Amperage Single-Rail design for maximum power and efficiency -Quiet and Intelligent Auto Fan for near-silent operation -Heavy-duty Power Protections provide peace of mind during operation