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Item#: N82E16817151094

SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

  • ATX12V V2.3 / EPS 12V V2.91
  • 80 PLUS BRONZE Certified
  • 100 - 240 V 50/60 Hz
  • +3.3V@24A, +5V@24A, +12V@40A, -12V@0.8A, +5VSB@2.5A
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This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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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 S12II 520 Bronze

Quick Info

Warranty

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


Customer Reviews of the SeaSonic USA S12II 520 Bronze

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Showing 112 of 112 reviews - Clear Filters

  • Brennan T.
  • 2/20/2015 6:14:48 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat little power supply

This review is from: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

Pros: Almost four years after buying this power supply and it's still going strong. I haven't really put too much strain on it over the years, though.

Cons: I could only say the Bronze certification and it being not modular, but you know that when you purchase it.

Other Thoughts: This power supply has been in two builds, my server when it could still fit in an ITX case and more recently an HTPC build. No hang ups so far! I expect it will last another four years.

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  • David G.
  • 1/29/2015 12:58:50 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsSeasonic Quality

This review is from: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

Pros: Proven Seasonic quality, excellent reviews, great price, nice and short (140mm). strong enough to run a mid-high-end graphics card (one 6-pin and one 8-pin PCIe leads).

Cons: None

Other Thoughts: Built to last, with premium capacitors, large wires and good connectors.

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  • Michael R.
  • 1/3/2015 4:58:37 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsAwesome Power Supply

This review is from: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

Pros: Its very quiet, only time i hear it is when i'm booting up my computer.
Very lightweight.

Cons: Lots and lots of cables no so good for a medium tower but its nothing to bad cause i'm a function over form kinda guy.

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  • christopher b.
  • 1/1/2015 2:23:54 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGREAT PSU

This review is from: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

Pros: Runs Quietly, stays cool even while playing BF4, have not had ONE ISSUE with the PSU, before i ordered a used (yea lesson learned) Corsair GS700 from a mazon thru a third party and the fan wouldnt even come on, so it would get hot and shut down the pc.. I hadnt heard of Seasonic before, cause I have never actually upgraded a PSU before.. but after reading reviews i knew it would be a great decision.. so, im VERY happy with this power supply.. and would HIGHLY recommend it to you guys

Cons: not any that I have found yet

Other Thoughts: Im very happy with this PSU if your wondering if you should get this PSU, get it.. for the price I paid $60 u cant beat it, seriously.. i know i might sound like i work for SeaSonic at this point, but im just very excited cause the psu i had before Blew, and the replacements fan wouldnt even come on, so i was starting to think it was my board that was messed up.. this psu has ran like a dream

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  • Skyler H.
  • 11/30/2014 2:23:42 AM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsRELIABLE !

This review is from: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

Pros: In almost every build I've done for others and all my own builds I use SeaSonic !
Never ever let me down !

Cons: NONE NADA NILL !

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  • Phil B.
  • 10/13/2014 6:03:46 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat PSU

This review is from: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

Pros: -Very little fluctuation in voltages
-plenty of connectors

Cons: -none

Other Thoughts: I bought this due to a series of reviews showing its excellent voltage regulation. I have to agree with them. A lot of the more recognized brands are much worse because they do not produce their own PSUs. Seasonic does and other brands regularly rebrand Seasonic PSUs.

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  • Timothy W.
  • 8/19/2014 5:05:46 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsDoes everything a PSU should do.

This review is from: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

Pros: Reliable, easy to use, electrically efficient, fits my case well (Bitfenix Shinobi)

Cons: Not modular (but you know that going in, so whatever).

Other Thoughts: PSU reviews are fairly simple. Seasonic products, for me at least, have always worked right out of the box, consistently, and without issue for a long time. I've owned this PSU for 15 months now, so I can't speak to super longevity, but I've been running a system with about 420 watts TDP, and have had 0 problems. I've got an Intel 3570k, a Radeon HD 7950, and both are overclocked without problems. I wish the cables had been modular for slightly easier setup, but they certainly have a modular version available in their M12II series, so get that if that's important.

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  • Gregory M.
  • 7/20/2014 10:44:31 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsClass rig, high number of connectors

This review is from: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

Pros: I upgraded my wife's workstation with a larger video card so I also needed a higher wattage PS. No problems and running for almost 2 full years with the unit never turned off. Plus it is a classy looking rig, and no want of needed connectors. I bought the SeaSonic because of superior ratings and reviews. Not disappointed at all.

Cons: None.

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  • Giuseppe G.
  • 6/16/2014 6:48:41 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsMakes Buzzing Noises Occasionally

This review is from: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

Pros: - Very Quiet
- It works
- Comes with a 5-year warranty

Cons: - Makes buzzing noises occasionally
- Screw holes do not line up (Corsair Carbide 500R)

Other Thoughts: I think this PSU is OK, but if you're going with a Corsair case I'd rather get another PSU brand.

Manufacturer Response:

Hi Giuseppe,
In terms of buzzing noise, please send a mail to newegg@seasonicus.com and please let us know more details. Please check to make sure your ERP Stand By Energy Savings modes are all ENABLED in your BIOS and possibly you will need to disable VSync in your VGA.
As for mount holes not lining up, the power supply case mount holes are made in accordance to Intel specifications and normally speaking, the case holes should be oval shaped to allow for tolerance.
Thank you

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  • Nicole M.
  • 4/28/2014 6:11:59 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsIts Seasonic

This review is from: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

Pros: This is the second one of this model I've purchased, The first was the modular version back in 2010. It's still going strong with a MSI 890, Phenom2 x4, ATI 5770, and 4 GB 1333 Mhz all overclocked for years. Have used many Seasonic PSU's never had a problem. Silent like all the 120mm versions.

Cons: Kinda wish I got the modular version, Seasonic doesn't skimp, The cables are long and thick.

Other Thoughts: Lovely packaging as usual Seasonic, always reminds me of Crown Royal HaHa.

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Item#: N82E16817151094
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