5 star; I only regret buying the 850W as I should have saved a bit more to buy the 1000W instead. However, this PSU handles the following watt-eating hardware withouth a single hiccup: 2 optical drives 2 hard drives at 5400RPM 1 SSD 1 AMD FX-9590 (with a 220W TDP) at 5gHz, overclocked to a "stable"...