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Power Supply

SeaSonic - S12II 520W 80+ Bronze Certified ATX Power Supply

( 4.7 Average / 18 Ratings )




Part #

S12II 520 Bronze




520 Watts





Efficiency Certification

80+ Bronze


> 87%


+3.3V@24A, +5V@24A, +12V@40A, -12V@0.8A, +5VSB@2.5A

PCI-Express 6+2-Pin Connectors


PCI-Express 6-Pin Connectors


Completed Builds Using This Part

See All Completed Builds


Merchant Base Promo Shipping Tax Availability Total
SuperBiiz $37.99 $37.99+
Newegg $44.99 +$6.99 s/h In stock $51.98
Newegg Marketplace $58.57 +FREE s/h $58.57

Price History (Excluding Tax) History:


Zveir 17 points 27 months ago
from completed build Madres Mini ITX

Best budget PSU I've encountered.

g0vernor 15 points 22 months ago
from completed build Straight outta Hoth

Silent, and has all the necessary connectors for a single gpu setup.

sith10110 2 points 20 months ago
from completed build M92p Mk-II (A.K.A. "SkidMarks")

Keeps quiet/cool, and a great value psu.

SuperGojira2001 22 points 20 months ago
from completed build SuperGojira2001's First Build!

A great 500W PSU from SeaSonic! It can support mid-range GPU's like the R9 380 and GTX 960, and has an 80+ bronze rating!

PhamQu 45 points 16 months ago

This PSU is actually a bit old, and I was concerned about that a bit. However, it functions well, and I managed to tolerate the mess that are non-modular PSU's.
Came with some velcro strips and wires were wrapped nicely. Just wish the wires themselves were also sleeved black instead of factory condiment colors.

tbobvh 6 points 15 months ago
from completed build Can't think of any name

While being Bronze certified it is still a very solid psu with good parts in it. Its not modulair but I can just hide my cables in my case because i wont see it so no issue there. Also I haven't heard any fan noise.

CogInTheWheel 12 points 15 months ago
from completed build The Redeemer: My First PC Build

Wanted to go for a stable high quality PSU. Works good and is silent enough!

Ellen_orangecloud 4 points 14 months ago
from completed build Type Y1 (First Build)

It's a Seasonic. It's $60. It's tier 2 in the list. JUST GET IT.

TheSuspect777 9 points 12 months ago
from completed build Swaz

No issues. Surprisingly handles a 1070 and a 6700k.

hensonoftofu 4 points 7 months ago
from completed build First Build, White & Blue Edition

Getting the job done.