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Item#: N82E16817151108

SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

  • ATX12V / EPS12V
  • Full-Modular
  • 80 PLUS BRONZE Certified
  • 100 - 240 V
  • +3.3V@25A, +5V@25A, +12V@70A, -12V@0.5A, +5VSB@3A

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.
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-850AM

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years
  • Read full details

Customer Reviews of the SeaSonic USA SS-850AM

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  • Anonymous
  • 8/9/2015 7:34:10 PM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsto the guy who's unit broke after one year

This review is from: SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: It's still under warranty by 4 years. I know you've most likely sent it in for replacement. I would have. Anyways it was most likely a bad rail in the unit. It won't happen twice trust me. Sea sonic is very good to customers.

Cons: Not a con but I already own one and I'm ordering another through new egg

Did you find this review helpful? Yes No

  • Robert N.
  • 8/6/2015 11:08:41 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

3 out of 5 eggsGood for one year

This review is from: SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: I like the cables and it worked great for one year to the day of purchasing it.

Cons: It suddenly dropped power to the system and then smoke started shooting out. I hope the rest of my system is okay but I won't know until I replace it.

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

  • Matthew P.
  • 7/2/2015 10:48:55 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsSolid Power but UNACCEPTABLY LOUD

This review is from: SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: Great cable management, build quality and stable power delivery. HOWEVER.......

Cons: This power supply is the loudest unit I have ever used. Coming from an old, but extremely quiet Antec Quattro 1000w with a single 80mm I expected this unit to be as quiet. However, it seems that Seasonic has one of the most aggressive fan profiles. At idle or light usage you can barely hear the fan, however, once rendering or in game it sounds like you just turned on a ventilation fan for a fume hood. This is not the sound of a bad fan it is just the sound of a fan running at 100%. This is easily the loudest thing in my office and can be heard through closed back headphones playing at medium-high volume. Unfortunately, this doesn't seem to be out of the norm for this PSU...I should have investigated further before my purchase so that is my fault. Take a look at johnnyguru's review of the unit. He reports elevated fan noise under cold and hot testing as well.

Other Thoughts: Asrock P67 Extreme 4 Gen 3
2600k @ 4.6ghz
16gb G.Skill Ripjaw 1600 @ 1.5v
Swiftech mcp 355 pump
Samsung 840 pro 250gb ssd
6x 1tb western digital blue
2x HD 6950 2gb
Sony Blu-ray burner
8x 120mm Scythe Slipstream SL
1x 140 Noctua @ 700rpm
2x Noctua 92mm @ 700rpm

Manufacturer Response:

Hi Matthew, I am sorry for any inconvenience this issue has caused. Please visit www.seasonicus.com to start the RMA and they can test the fan control and make the adjustments if necessary. If you have any issues, please write to us at newegg@seasonicus.com Thank You.

Did you find this review helpful? Yes No

  • Jimmy C.
  • 6/19/2015 8:36:01 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSeasonic!

This review is from: SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: Seasonic

Cons: None

Other Thoughts: Seasonic! That's the only thing I gotta say. You can't go wrong with this brand. They keep making high quality product that are highly regarded by any computer tech that knows his stuff well.

Did you find this review helpful? Yes No

  • PNC .
  • 6/2/2015 1:44:10 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsI am future proof

This review is from: SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: This thing will handle probably any Video card on the market as it does push 70 amps. looks great heavy and very well built. fully modular is the way to go. NO colored ends on the cables everything is black. LOVE IT!!

Cons: What cons??

Other Thoughts: Upgrading to GTX 980 soon and i'm fully confident there be zero problems with this power supply feeding it.

Did you find this review helpful? Yes No

  • Elias M.
  • 5/19/2015 3:03:06 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsBest Bang for the Buck

This review is from: SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: The power supply looks very nice and with a mostly black exterior, minus some stickers and logos, it’s most likely going to match most builds. It is fully modular with all black cables, so no rainbow wires will atrociously ruin the aesthetic of any build. The cables are both durable and easily flexible. It’s a very rugged power supply that lives up to powering high end multi-gpu builds. I used this for a dual GTX 780 build with an overclocked i5 and it never skipped a beat or even ramped up the fan. I wish a separate set of individual 8 pin and 6 pin pci cables were included so graphics cards that don’t utilize more than two 8 pin cables will not have extra unused connectors hanging off the card. However, most PSU’s don’t include this so it’s no reason to consider it a con. There are always cable extensions to fix this

Cons: As for a functional con, the only one for me is the sound level of the fan. To make this clear, the fan is NOT loud. As a matter of fact it is actually rather quiet. I have measured it to be around 30 decibels at idle. This is more than Seasonics claim of the fan not going above 25 decibels. However, as stated before, even with two gtx 780’s the fan never ramped up. So it remained at the same level from idle through full load of my system.

Other Thoughts: All in all, a very good PSU for the price that is very much above average. I don’t think you will find anything better for any less from a reputable company like Seasonic. I give it a solid “B+”. I would give it an “A” if the fan was closer to complete silence, but that’s relative and subjective to the user’s personal level of sound tolerance, preference, and opinion on silence.

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  • brian d.
  • 3/27/2015 9:42:52 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsM12II

This review is from: SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: Its seasonic. All fantastic quality components used. Build quality is outstanding. Cables are solid black with no colored wires to see on the 24-pin cable. Nice and clean.

Cons: I didnt knock an egg off for this, but i didnt like the dual 8-pin GPU connectors. I used a single card in my system and this cable just made it look junky. Just a minor complaint. Most who get this kind of PSU will have dual GPU's which would have been just fine.

Other Thoughts: None. Really like seasonic and this is just another great product in their lineup.

Did you find this review helpful? Yes No

  • Mark B.
  • 3/25/2015 3:13:38 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggs

This review is from: SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: I've been using this for the better part of a year. It's quiet, cool, and stable. If you haven't tried a modular PSU, you're missing out

Cons: None

Did you find this review helpful? Yes No

  • Steve T.
  • 3/14/2015 11:26:37 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsAwesome!

This review is from: SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: Awesome unit, very nice packaging!
Works great and I have plenty of power to spare!
Comes with cool bag and is FULLY modular!
Has not blown up yet!

Cons: Has a bogus orange specification sticker... For those of us with windowed cases it's a bit ghastly.

Other Thoughts: SeaSonic seems to make the best power supply hands down.

Did you find this review helpful? Yes No

  • Michael R.
  • 2/11/2015 12:56:56 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsNice while it lasted

This review is from: SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready

Pros: Nice and quiet
Modular

Cons: Died after 1.5 years

Other Thoughts: It was my media pc/server which is on 24/7 so I guess it is not a huge surprise it died but I would have thought it would have lasted over 2 years. I am RMAing it right now.

Manufacturer Response:

Hi Mike,
I am very sorry for the inconvenience of the failed unit. Please start the RMA with our USA office at www.seasonicus.com and they will take care of it for you immediately. Thank you.

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

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Volume Discounts
  • 2-3 $112.99 ea.
  • 4-7 $110.99 ea.
  • 8+ $108.99 ea.

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Item#: N82E16817151108
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