Corsair Builder Series CX500 500W PSU
This is a really terrific power supply that would be the very best option if it just had a slightly higher efficiency rating. The 80 PLUS Bronze rating is decent, but certainly not as good as a Gold rating and it means this PSU loses more power to heat. However, with 500W of power, this is a great choice for a mid-range system although it's still too low for a high-end gaming PC with a serious video card. One of the best features of this power supply is it has a modular design, which means cables can be unplugged from it thereby reducing clutter within your computer case. It comes with a main power cable and dedicated CPU connection, along with a pair of PCIe cables, five SATA connectors, and four 4Pin peripheral cables.