PSU big enough for this rig?

dji127

Honorable
Feb 2, 2014
6
0
10,510
I have a computer I have recently built for a friend.

Intel(R) Core(TM) i7-4771 CPU @ 3.50GHz
Gigabyte H87M-D3H mobo
G.Skill Ripjaws 4 x 8gig sticks
NVIDIA GeForce GTX 650 Ti 1 gig
1TB HDD
Runs a wireless card
Usually a 3TB external being used
Phone always plugged in

Used a Antec NeoECO 520c 520W PSU.

Has been doing strange things, will just out of no where shut off.

Could the PSU be a bit small for it?
 

dji127

Honorable
Feb 2, 2014
6
0
10,510
The whole computer is only 4 months old and isn't used too often. I haven't done a memtest yet, that was the next step. Is memtest86+ the preferred memory testing program or?