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SeaSonic USA > 
Item#: N82E16817151093

SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

  • ATX12V v2.3 / EPS 12V v2.91
  • Full Modular
  • 80 PLUS BRONZE Certified
  • 100 - 240 V 50/60 Hz
  • +3.3V@24A, +5V@24A, +12V1@20A, +12V2@20A, -12V@0.8A, +5VSB@2.5A
IronEgg
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Learn more about the SeaSonic USA M12II 520 Bronze

Model

Brand
SeaSonic
Model
M12II 520 Bronze

Spec

Type
ATX12V v2.3 / EPS 12V v2.91
Maximum Power
520W
Fans
1 x 120mm ball bearing cooling fan
PFC
Active
Main Connector
20+4Pin
+12V Rails
2
PCI-Express Connector
1 x 6-Pin, 1 x 6+2-Pin
SATA Power Connector
6
SLI
SLI Ready
Haswell Support
No
Modular
Full Modular
Efficiency
up to 87%
Energy-Efficient
80 PLUS BRONZE Certified
Over Voltage Protection
Yes
Input Voltage
100 - 240 V
Input Frequency Range
50/60 Hz
Output
+3.3V@24A, +5V@24A, +12V1@20A, +12V2@20A, -12V@0.8A, +5VSB@2.5A
Dimensions
5.91" x 6.5" x 3.39"

Features

Connectors
1 x Main connector (20+4Pin)
1 x 4+4 Pin ATX12V / EPS12V
1 x 8 Pin EPS12V
6 x Peripheral
6 x SATA
2 x Floppy
2 x PCI-E
Features
Super High Efficiency [up to 87%] - Green solution for reducing energy consumption, noise and heat.

Highly Reliable 105°C Japanese Brand Capacitors - Exceptionally reliable components extend product life.

Ample +12V Outputs - Enhanced +12V current capability broadens utilization possibilities.

Active Power Factor Correction [99% PF Typical] - Reduces line loss and power distortion.

Double Forward Converter Design - Advanced topology for high efficiency.

Smart & Silent Fan Control - Intelligent thermal control balances between noise and cooling.

12cm Ball Bearing Cooling Fan - Increases airflow & lifetime and reduces rotation speed & noises.

Soft-Mount Rubber Cushions - Reduce fan rotation and vibration noise.

Universal Video Card Support - Supports new PCI-E video card technologies.

All-in-One DC Cabling Design - Supports PC, IPC, workstation and server systems.

Detachable Modular Cables - Flexible cable solution to reduce clutter.

Patented Easy Swap Connectors - Unplug the connectors easily, quickly and safely.

Universal AC Input [Full Range] - Plug and run safely anywhere around the world.

Ultra Ventilation [Honeycomb Structure] - Minimizes airflow resistance for maximum cooling.

Over Voltage / Over Power / Short Circuit Protection - Total protection for your power supply, your system and yourself

Manufacturer Warranty

Parts
5 years limited
Labor
5 years limited

Quick Info

Warranty

  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years


Customer Reviews of the SeaSonic USA M12II 520 Bronze

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Showing 85 of 85 reviews - Clear Filters

  • Anonymous
  • 6/29/2014 2:55:05 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGood stuff

This review is from: SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

Pros: quiet, modular, decent efficiency

Cons: None

Did you find this review helpful? Yes No

  • Chase H.
  • 5/10/2014 4:13:27 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggswell, its semi modular

This review is from: SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

Pros: It works as it should and as advertised

Cons: doesn't boast a great cable selection
Hard to screw into my case
cords didn't reach well to everywhere i wanted them to go

Other Thoughts: im not docking an egg because it is a semi modular PSU and it works fine.
Be aware of what youre buying.

Did you find this review helpful? Yes No

  • john a.
  • 4/14/2014 8:59:43 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsThis PSU is very well reviewed BUT

This review is from: SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

Pros: This SeaSonic product is very well reviewed on the web, and SeaSonic has a good reputation for building quality products.

Cons: After about twelve hours of service the PSU died softly, meaning that when it died it didn't take any of the devices connected to with it. My computer would black screen randomly. I fixed the issue with a PSU I bought locally.

Other Thoughts: I still strongly believe that SeaSonic makes great PSUs , so that's why I gave the PSU three eggs. I also believe that the item I got just slipped through quality control.

Manufacturer Response:

Dear John, I am sorry for your experience with our product. We do try our best to make sure the prodcuts we deliver performs to our standards. If you have further information or feedback, please kindly write to newegg@seasonicus.com Thank You.

Did you find this review helpful? Yes No

  • nicholas s.
  • 4/10/2014 11:41:03 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsdoing its job

This review is from: SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

Pros: quiet, and it does its job thus far i couldnt ask any more of it

Cons: it is not fully modular and that could be an issue in a small case like mine but i made it work.

Other Thoughts: i am happy with this purchase

Did you find this review helpful? Yes No

  • Benjamin P.
  • 4/8/2014 2:57:15 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsWorks great

This review is from: SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

Pros: * Works like it should
* Modular

Cons: * Six pin ATX power cable was barely long enough.

Other Thoughts: I have had good luck with Seasonic power supplies, and this one continues the tradition of working well.

Did you find this review helpful? Yes No

  • Quentin S.
  • 3/22/2014 5:25:23 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat improvement!!!

This review is from: SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

Pros: Great price.

I do music production and with my old PSU that came with my computer case, it would get loud especially near the end of its life. Installed this SeaSonic. Its super quiet. I did alot of research before buying one and found SeaSonic to be a reputable brand.

Cons: None at the moment. Unless it starts making noises this thing is A1!!!

1 out of 1 people found this review helpful. Did you? Yes No

  • Peter I.
  • 2/28/2014 11:03:57 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsSeaSonic Ride the Wave

This review is from: SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

Pros: Great Power supply. Good Manual and Easy install. Fired up without a problem and is quiet as a church mouse.

Cons: Modular Cables could be more flexible. I would have preferred 3 - 2 Sata Socket cables instead of the 2 -3 Sata socket cables that come with it, but these are minor complaints.

Other Thoughts: The features for the price and the 5 year SeaSonic Warranty really gives you a good bang for your buck

Did you find this review helpful? Yes No

  • Greg B.
  • 1/13/2014 5:02:17 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsNice, but squeaky.

This review is from: SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

Pros: - Works great
- Good price
- Quiet
- Modular

Cons: -It squeaks.

Other Thoughts: This is a great PSU, but for some reason it makes a static or squeaky noise (kind of hard to describe). This only happens when there is a lot going on graphically. When I am playing back a bunch of tracks on my recording software with plug-ins, it works fine. *shrug* I probably wouldn't buy it again unless the one I bought was a fluke. That noise is kind of annoying when I am watching movies.

Manufacturer Response:

Hi Greg, this is a strange situation, can you please try to disable VSync for your VGA and see if that resolves your issue. Please let me know at newegg@seasonicus.com Thank You.

Did you find this review helpful? Yes No

  • James M.
  • 12/3/2013 12:52:04 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsdependeble

This review is from: SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

Pros: Been almost two years and its still working unlike some more expensive brands.

Cons: not modular

Other Thoughts: Sure better then all the corsairs I bought.

0 out of 1 people found this review helpful. Did you? Yes No

  • Corbyn P.
  • 11/19/2013 3:43:05 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSeasonic Quality

This review is from: SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply

Pros: - Quiet
- Well-Built
- Decently priced
- Arrived quicker that expected

A great PSU overall. I am definitely sticking with Seasonic for my builds

Cons: Recently, whenever I turn my machine on, the fan revs up and and causes quite the racket (from vibration against my case). I believe, however, it is just my case's lack of noise reducing rubber pads where the unit sits, since it is a Dell OEM case. So I am not knocking off any eggs for that, just bear that in mind when purchasing a case.

Also, it is not fully modular and longer than an OEM PSU (or at least mine), which can be a pain in a cramped case. I got this on the fly though, perhaps some more reading was in order...It is what is, and it is a very good PSU!

Other Thoughts: I bought this model because I needed a better PSU to fuel a new graphics card, which replaced the OEM 460w / Radeon HD 7570 (a laughable desktop card, but better than integrated) combo Dell dished out to me on my XPS 8500.

Did you find this review helpful? Yes No

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Item#: N82E16817151093
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