Radeon HD 5770 (single GPU)
* The card requires you to have a 500 Watt power supply unit at minimum if you use it in a high-end system. That power supply needs to have (in total accumulated) at least 40 Amps available on the +12 volts rails.
Quindi bisogna vedere anche il resto del sistema, ma sembra un po sottodimensionato come alimentatore
Preso da
http://www.guru3d.com/article/radeon...review-test/11