what's a good PSU for a GTX 770 2 GB?

Solution
Antec, Seasonic or Corsair (TX, HX or AX).

For 1 GPU:
PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic G 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($85.98 @ SuperBiiz)
Total: $85.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-03 23:42 EDT-0400

For 2 SLI:
PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic G-750 750W 80+ Gold Certified Semi-Modular ATX Power Supply ($114.99 @ SuperBiiz)
Total: $114.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-03 23:42 EDT-0400

barto

Expert
Ambassador
Antec, Seasonic or Corsair (TX, HX or AX).

For 1 GPU:
PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic G 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($85.98 @ SuperBiiz)
Total: $85.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-03 23:42 EDT-0400

For 2 SLI:
PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic G-750 750W 80+ Gold Certified Semi-Modular ATX Power Supply ($114.99 @ SuperBiiz)
Total: $114.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-03 23:42 EDT-0400

 
Solution