Seasonic SSR-450RM Active PFC G-450 PC power supply (450 watts ATX 12V) (Personal Computers)
Had a couple of years a LC-Power LC6550 1.3 550 watts, actually never had problems with it. Until I've bought a new graphics card and a power consumption meter. The new graphics card, the LC-Power now consumed a whopping 305 watts under full load, an