What kind of power needed?

Solution
For a system using a single MSI Gaming N770 TF 2GD5/OC GeForce GTX 770 graphics card a minimum of a 550 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 35 Amps or greater and that has at least two 8-pin PCI Express supplementary power connectors is recommended.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Dark Lord of Tech

Retired Moderator
Here's a few good fits , made by the best SEASONIC

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Antec High Current Gamer 620W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($59.99 @ NCIX US)
Total: $59.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-10-18 18:36 EDT-0400)




PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Antec HCG M 750W 80 PLUS Bronze Certified ATX12V Power Supply ($84.99 @ NCIX US)
Total: $84.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-10-18 18:31 EDT-0400)
 
For a system using a single MSI Gaming N770 TF 2GD5/OC GeForce GTX 770 graphics card a minimum of a 550 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 35 Amps or greater and that has at least two 8-pin PCI Express supplementary power connectors is recommended.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.
 
Solution