How Many Amps For a Graphics Card?

[NeonMane]

I'll be building a new gaming PC next month and I was looking at a SeaSonic M12II 520W PSU and an ASUS GTX 770 DirectCU II and I've heard that the 770 requires a power supply with a 42amp 12volt rail. Is this true or is my power supply sufficient? I have the HDD, RAM and case. I'd like to keep the PSU under $70 and semi or fully modular. Just no non-modular PSUs. Thank you for your time.

 

[hapkido]

A 770 by itself needs about 20A on the 12V at 100% load. How much your entire system needs depends on the rest of the parts. Offhand, I would say a 520W SeaSonic PSU would be fine, but I can't say for sure without knowing exact parts.

 

[Dark Lord of Tech]

A GeForce GTX 770 needs at least 42 amps on the 12v rail and a 550w to 600w quality power supply.

 

[Dark Lord of Tech]

Made by SEASONIC and SEMI - Modular.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Antec High Current Gamer 620W 80+ Bronze Certified Semi-Modular ATX Power Supply ($59.99 @ NCIX US)
Total: $59.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-01 23:44 EDT-0400)

Yours isn't sufficient to power a 770.

This one is.



Or this SEASONIC made ,, FULL Modular , Gold Certified.

45 amps on the 12v rail.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: XFX XTR 550W 80+ Gold Certified Fully-Modular ATX Power Supply ($89.99 @ Newegg)
Total: $89.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-01 23:51 EDT-0400)

 

[NeonMane]

Would a Corsair CX600M PSU be a good choice?