Welcome to the forums.
The total power draw of GTX 760 SC (
Details) can be 170W (
14.2 amps @ 12V)..The card can get 75W (6.25 amps @ 12V) from the 6-pin PCIe supplemental power connector, 150W (12.5 amps @ 12V) from the 8-pin PCIe supplemental power connector, and 75W (6.25 amps @ 12V) from the PCIe slot itself..A total of 300W (25 amps @ 12V) is available to the card from the PCIe supplemental power connectors and the PCIe slot combined per the PCIe v2.0 300W specification.
The 14.2 amp total card draw minus the 6.25 amps available from the PCIe slot equals 8 amps neccessary from the PCIe supplemental power connectors.
The
NEX750B Bronze PSU (which is manufactured by FSP Group, by the way) has 20A on each of the four 12V rails.
The 500W
30A minimum system power requirement is based on a mid-range PC configured with an Intel Core i7 3.2GHz processor..The 30A recommended on the 12V rail is for your whole system, not just the graphics card.
You can estimate your total system wattage requirements
here.
The short answer is yes, you're good to go, as stated in the posts above.
Now, a word of advice/warning..You should update your motherboard BIOS to the latest version available from your motherboard manufacturers support website before you put the 760 in..Depending on your motherboard, it may not work with the GTX 760 unless the BIOS is updated..Some motherboards will just not work at all with newer graphics cards, no matter what, period.