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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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  • 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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Showing 34 of 34 reviews - Clear Filters

  • olivier c.
  • 1/20/2016 8:29:52 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsStable and silent so far

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
Stable
Fits perfectly mounted on top of my Silverstone Temjin case (heat exhaust on top of case

Cons: Pricey.

Other Thoughts: Some reviewers complained about a whining or high-pitched noise, but I was not able to hear anything even getting very close to the computer case.
Easy to mount on Temjin case to power an Asus H97 Plus MoBo
Everything stable an cool so far.
I've looked at a couple of technical reviews before purchasing and every component is over-dimensioned in this unit, every stress test was passed with honors. So let's hope its lifespan will be on par with its price tag.

Did you find this review helpful? Yes No

  • Donald D.
  • 11/15/2015 9:56:26 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsNice

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: Running my i7-6700k and gtx980 with no problem and completely silent.

Cons: none

Did you find this review helpful? Yes No

  • LESLIE F.
  • 10/3/2015 2:57:08 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsEfficient and very quiet

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: Efficient which is really helpful with my AMD FX processor.
Fanless for maximum quiet, but then the case needs adequate
ventilation. Reputation for high reliability and durability, very clean power output.

Enough power for everyday computing needs with an efficient CPU and mid range videocard.

Cons: Needs to have more drive cables, and longer cable choices.
Supplied short cables barely reach in a Corsair Carbide 300R case.

Extra and longer cables can be purchased separately, but at a specialized seller site when I found them. A couple more drive cables should be included with the box.

Other Thoughts: Slightest buzz could be heard with ear next to the supply, below measurable with ancient RS meter which only measures down to 50dB, and any noise is drowned out by my case and CPU fans running. Not absolutely silent, but good enough for my needs.

Did you find this review helpful? Yes No

  • Chris I.
  • 10/1/2015 9:22:47 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsNoiseless

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: Noisless, obviously. Others have stated that it hums after a while. I have not heard this from my IvyBridge setup in any form. This is a 2012, consumer grade, MSI motherboard to boot. No fancy power settings have been used, or changed. No overclocking.

Modularity is a must for any build, and certainly for any PS over a certian price point (See "Other Thoughts" however).

Cons: Pricey for only 520w (though it is Platinum rated, and fan-less).

Other Thoughts: There are some things to be aware of before buying this, but if you are a builder then you are accustomed to making changes to your case in order to fit new hardware. Or you should be at least. And make sure you have the necessary tools/power tools in order to make this PS work if you have a top mount PS case.

The first is that this PS is designed for low mount situations ONLY (don't know about a side mount/odd ball case however). And not just because of the fan-less nature of the unit, and its exhaust ports on the top of it, but the cabling for SSD power is designed to go from bottom to top. This makes a top mount PS case impossible if the case is more than a MicroATX in size because of the root cable length for the mentioned power cable. Keep this mind, or else you're in for a $150 surprise.

Also, for safety, you're going to have to drill some vent holes in the top of your case if you have that top mount PS location in your case if you intend on using this PS. This is because that heat has to go somewhere, and a typical, cheap, MicroATX case like mine has absolutely no place to vent from the top with out the forced removal of air/heat by a fanned PS unit.

I would recommend spending the necessary time with this vent hole creation. Using a ruler/straight edge, some fine point silver/black sharpie marker, and doing almost as many small holes in your case above the PS as there are in the top of PS for heat exhaustion. Clamp some wood underneath the area to be drilled so that it does not bend the sheet metal when you press down with the drill, and use a location/hold punch to set each drill spot, physically, in order to get an even look if you are a stickler for detail, and don't want your drill bit walking all over the place. Remember to use some lubricate/motor oil on the drill bit.

Months later, in my cheap top mount PS case, things are still golden. No "hum," no issues. Quiet as can be.

Manufacturer Response:

Hi Chris, thank you for the review and sorry for the inconvenience. We have to choose one way or the other for connector positioning and connector build type. Sorry. If you have further comments or questions, please write to: newegg@seasonicus.com Thank you.

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

  • Mykhailo L.
  • 8/5/2015 10:42:10 AM
  • 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.

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  • Keven B.
  • 5/14/2015 3:06:45 PM
  • 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
  • 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

  • Robert B.
  • 4/11/2015 5:57:30 PM
  • 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
  • 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
  • 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

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Item#: N82E16817151122
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