The Antec is an 80 Plus Gold-rated 850W power supply, fully modular, giving a build reliable, efficient power with the newer ATX 3.1/PCIe 5.1 spec for better transient power handling on modern GPUs. A well-balanced choice of efficiency and price for a mid-to-high-end build. After comparing online prices, www.marvel.co.za should be the cheapest on this product.