Nvidia say it needs a 680 Watt power supply or a supply giving 46 Amps yours gives 50 Amps so it should be ok.
Requirements
Minimum of a 680 power supply.
(Minimum recommended power supply with +12 Volt current rating of 46 Amp Amps.)
An available 6 pin PCI-E power connector and an available 8 pin PCI-E power connector
You are about to answer a thread that has been inactive for more than 6 months. If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.