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Item#: N82E16817151122

SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

  • ATX12V / EPS12V
  • Full Modular
  • 80 PLUS PLATINUM Certified
  • 100 - 240 V 50/60 Hz
  • +3.3V@20A, +5V@20A, +12V@43A,-12@0.5A, +5Vsb@2.5A

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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.
IronEgg
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about the SeaSonic USA SS-520FL2

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 7 years
  • Limited Warranty period (labor): 7 years
  • Read full details

Customer Reviews of the SeaSonic USA SS-520FL2

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  • Michael L.
  • 8/5/2015 10:42:10 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsCompletely silent, as expected!

This review is from: SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: No moving parts = utter silence.

Cons: Limited to 520W means can't game on a GTX 980 Ti safely.

Other Thoughts: Most of the PSU is perforated for superb ventilation. I managed to stuff one into a small boxy Antec case and it fit perfectly, allowing for air to pass through. Very well done, I just wish there was a 600W version.

Did you find this review helpful? Yes No

  • Keven B.
  • 5/14/2015 3:06:45 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsRMA 1/2 for Coil Whine

This review is from: SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: Manufacture by Seasonic=excellent quality and component
Fanless
7 years warranty (they seriously think that you’ll never have one die on you by this time)
Black cable all the way to inward the connector
Length is good… mind you measure your needs in length before buy ;)
Fully modular (good for airflow especially fanless one)
80+ Platinum efficiency
no stability issue (not so worthy this affirmation since my system draw 200w OC from the wall ;) [check review site for stability test that means something]

Cons: When you start paying an extra for silent it can be a great or bad experience because of the tolerance of the manufacturer. Mine has coil whine which I recorded on soundcloud and name it “Seasonic 520w Fanless Coil Whine” if you want to hear it and understand this review. I RMA this PSU so factor this in the first place, you may need to pay a return label to get one that don’t whine. My new PSU coil whine but so little that I can’t remove another egg for that in fact in a quiet room at 2AM jumpstarting the PSU and put my ear right to the grill I barely hear it even with my ear that I consider on the high end of the sensitive side. I won’t return the second unit because in the case in jumpstart I just can’t hear it. The first one I could hear it through the room if it was quiet enough.

Other Thoughts: I am a new freak of silent and I’m replacing gradually all component that make noise in my system I run my fan at 300-350 rpm or 0 and other Noctua are on their way. When you consider to buy this PSU for its silence factor you have a much higher chance to rma that than a motherboard or ram so you may have to paid 1 or multiple shipping to get one that is quiet enough for your need so factor this in your budget (I didn’t say silent because I can hear the difference 100% of the time when it is on or off when I have my ear next to the PSU grill)

Most people review it and base the “silent factor” by turning on their system and when they don’t hear the PSU its “silent” more often than usually the system has fan that cover coil whine (I saw YouTube video showing the quietness of nf-f12 on H100i compare to stock fan running at 100% but the noctua where running also at 100% so it was quieter but far from quiet so keep in mind from those review and check the freak of silent who have a much higher standard in term of noise level.

If all intake are filter, make sure that you have a good positive pressure otherwise the on-off switch side will become an intake and convection will exhaust upward so dust will get inside by this non filter hole because it’s prohibit to turn the grill side down (if you have a bottom PSU’s intake) because it will not properly cool (Seasonic’s recommendation)

This PSU goes in a fractal define R5 but it also have good length for an Antec 900 and it power an i5 3570k, XFX 7850, 2 hdd and 1 ssd, 16gb ddr3 1600, asus p8-z77 v-lk. This system stock pull 110w from the wall under load (CPU [prime95] & GPU [valley Benchmark]) and 200w if I OC my 3570k to 1.3V@4.9 GHz (gpu stock voltage)

Box seasonic:
(L) 13” 1/8
(W) 7” 3/4
(H) 5” ¼

Shipping box (to calculate possible shipping return in the price point):
(L) 16” 5/16
(W) 12” ¼
(H) 8” ½
Weight 6.9 pound

[All following measure are in millimeter ]

PSU’s dimension that is not provided:
-Length with plastic connector: 170mm
-Lengths with plastic connector+black cable turn 90° upward: 174mm (fit flush with a little of pressure in fractal define R5 with 140mm fan on bottom)
-Connector location (PSU grill side up and from the left to the right):
-Lowest array from the bottom is 6 -17(19 with the thickness of the clip)
-Highest array from the bottom is 31-42.5(45 with the thickness of the clip)

Distance of the connector from the left
-M/B (top one) 10.5-49.5
-SATA: 49.5-64; 64-78.4; 78.4-92.7; 107
-M/B (bottom one) 14-36
-PCIe/CPU: 36-54.5; 54.5-73; 73-91.5; 91.5-110

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

  • Alex K.
  • 5/12/2015 7:37:05 AM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsDOA

This review is from: SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: PSU was in a nice cloth bag

Cons: PSU wouldn't power up a motherboard with just a processor installed on it (Gryphon Z97+4790K). As soon as I connected a different PSU everything started working.

Manufacturer Response:

Hi Aliaksandr, I am sorry to read of your case, can you please contact Sea Sonic USA for RMA support. If you have any questions or comments, please write to me at newegg@seasonicus.com Thank you.

Did you find this review helpful? Yes No

  • MARY B.
  • 4/11/2015 5:57:30 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggs$20 Replacement

This review is from: SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: I was excited to get and install my new Seasonic 520w Fan-less Power Supply with a 7yr warranty. I did a lot of research and this was THE one to get. All the reviews were great and the warranty spoke volumes. Overall first impressions were great, the design was beautiful everything was as to be expected and the install went off without a hitch.

Cons: About the third day after installation I woke up and attempted to turn my machine on. The moment I pressed the power button there was a very loud "POP" and my machine no longer showed any signs of life. I pulled the new PSU out and replaced it with the old one I had saved and my machine fired right back up. I returned to the website to find the steps I needed to take in order to get a replacement. Got my RMA and ordered my return shipping label only to find out it would cost me $20 to return it. Needless to say I am disappointed that such a distinguished company charges customers (within 30 days even) though it was no fault of their own...

Other Thoughts: I got the replacement in a timely manner and it is currently installed. I just hope this one lasts longer than 3 days because I cannot afford another $20 replacement fee.

Did you find this review helpful? Yes No

  • frank b.
  • 4/10/2015 8:27:38 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsMuch Coil Whine

This review is from: SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: Without pros when a fanless PS comes in this noisy. Coil whine that fills a room. To be fair, open TJ7 case.

Cons: The new SS-520FL2 came in almost as noisy as the same 2 yr. old model it replaced. The latter, initially fairly silent, became increasingly noisy as time passed, and unbearably noisy after a recent first overclock. All bios power saving enabled.

Other Thoughts: Is Seasonic merely careless in putting out noisy PS. Or, is New Egg merely recycling RMA'd noisy models? Either way, I hold Seasonic responsible. They know there's a problem, and apparently do nothing. lRMA'd for Rosewill Silent Night.

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

  • Alain A.
  • 3/24/2015 10:11:20 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsAwesome!!!

This review is from: SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: One word, dead silent!!! Overall quality of Seasonic PSU unbeaten.

Cons: None...

Did you find this review helpful? Yes No

  • Nick M.
  • 3/19/2015 2:53:54 PM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsOutstanding

This review is from: SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: Silent, including no coil whine. Stays cool with proper ventilation. Extremely efficient. Built to last.

Cons: None whatsoever. Worth the price.

Other Thoughts: Has worked flawlessly for 18 months powering a system drawing about 375 watts. First used in a Silverstone TJ-08, and now packed into a Cooler Master Elite 110. Both place the PSU at the top, with ventilation to the outside. Putting my hand over the grill, I have never felt this Seasonic unit get warm, even during stress testing.

Odd to say about a PSU, but this thing exudes so much quality I wish I could show it off with a case window.

Did you find this review helpful? Yes No

  • Kenneth B.
  • 1/15/2015 8:13:30 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsQuiet, Stable

This review is from: SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: Very high efficiency, borders on "Titanium" certification which is brutally hard to do off 115V

Dead silent

Built like a tank

Very good voltage regulation

VERY high quality parts

7 year warranty.

Seasonic is (arguably) the best power supply OEM in the world (Superflower makes a darn nice product as well)

Have used a ton of Seasonics over the years, always well designed and well built.

Cons: It's pricey for a 520 watt power supply, but that is mostly because it's really about an 800 watt unit de rated to be stable at a lower power level.

Comes in a velvet pouch?

Other Thoughts: The Silverstone Nightjar is, give or take a paint job and a little packaging, exactly the same power supply

Must have open ventilation above the PS or it will fry it's self.

There is an old saying "If this is the sort of thing you like, you will like this thing rather a lot"

If you want a bulletproof silent power supply with ultra high efficiency, this is it.

If this is what you need and are willing to pay the price, it is the best example of what it is.

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

  • Randy Y.
  • 10/6/2014 6:02:47 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsGreat except for the buzz

This review is from: SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: It functions like it's supposed to. No power issues at all.

Cons: Buzzing. None at first, and then I thought it was just a bad fan somewhere, but when I went to fix it found it was from the power supply. And it varies, sometimes it will be absolutely quiet, other times it's like a constant crackling. Seems worse as it warms up or if the room is warm.

Other Thoughts: If it wasn't for the buzzing I would give it five stars. It seems to be hit or miss based on other reviews; I guess I got a bad one.

Manufacturer Response:

Hi Randy, I am sorry about the noise issue. Can you please make sure all your energy saving modes in the BIOS are enabled. This should resolve your issue. If not, please contact us at newegg@seasonicus.com Thank you.

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

  • L. W.
  • 9/28/2014 6:54:36 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsReally good quality.

This review is from: SeaSonic SS-520FL2 520W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: -Very efficient and well built PSU.
-No coil whine as mentioned by other reviewers.
-No noise emitting from my unit whatsoever.
-Powers a mini-ITX i7-4770, 16GB RAM and a GTX 980 with ease.

Cons: -Supplied PSU cables are a bit stiff but manageable.
-I'm not sure if was just my unit but it did not come with an AC power cable, which is mind blowing for a PSU of this cost and quality.

3 out of 3 people found this review helpful. Did you? Yes No

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Item#: N82E16817151122
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