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Seasonic Flagship Prime Series SSR-850PD 850W Platinum Full Modular ATX12V & EPS12V 135mm FDB Fan Super Quiet Power Supply

4.5 4.5 out of 5 stars 116 ratings
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Model Name prime
Brand Seasonic
Compatible Devices Personal Computer
Connector Type ATX, EPS
Output Wattage 850 Watts
Form Factor ATX12V
Wattage 850
Cooling Method Air
Item Dimensions LxWxH 6.7 x 3.4 x 5.9 inches
Item Weight 1 Kilograms

About this item

  • High performance Fluid Dynamic Bearing (FDB) fans are designed to take advantage of the impact absorbance effects of oil
  • The Seasonic PRIME Series is designed with very favorable level of acoustics and it uses carefully selected components and innovative circuit design to minimize sound output
  • Seasonic's latest design keeps the output voltage within a very tight range, achieving under 0.5 % (1 % for 1000 W and above) load regulation
  • Seasonic's engineers have implemented a new design feature, where instead of cables; the back panel and the PCB (Printed Circuit Board) are connected by a copper plate
  • 10 Years Warranty

Product information

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Seasonic Flagship Prime Series SSR-850PD 850W Platinum Full Modular ATX12V & EPS12V 135mm FDB Fan Super Quiet Power Supply

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What's in the box

  • Seasonic Flagship PRIME SERIES SSR-850PD power supply

    • Product Description

    The Seasonic PRIME Platinum 850 watt power supply is a champion is stable and reliable power delivery. It boasts a near-perfect voltage output which represents Seasonic's market leading engineering feat. This unit is ideal for users who want o reduces noise levels in their work environment, as it has an oversized, 135 mm Fluid Dynamic Bearing Fan that is controlled by Seasonic's proprietary Premium Hybrid Fan Control. An innovative Cable-free Connection Design solution employs highly conductive copper plate to replace the traditionally used cables for a cleaner design an to increase power efficiency.

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    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    116 global ratings

    Customers say

    Customers like the quality, performance, noise level and value of the system power device. For example, they mention it's reliable, works great and is very quiet. Some are happy with efficiency. That said, opinions are mixed on the cables.

    AI-generated from the text of customer reviews

    16 customers mention13 positive3 negative

    Customers like the quality of the system power device. They say it's the best power supply made, reliable, and rock solid. Customers also mention that it runs near max power and never misses a beat.

    "...Another rock solid offering from Seasonic." Read more

    "...it to be the best value available in top quality, high wattage power supplies...." Read more

    "...You cannot go wrong with platinum! They feel like they are made very well. It comes with plenty of cables. I have two on a mining rig...." Read more

    "...This guy was reliable, the modular outputs are so well controlled that they allow 12 volt on all the PCIe connections. Not bad!..." Read more

    13 customers mention10 positive3 negative

    Customers like the performance of the system power device. They say it's working great, running their computer perfectly fine, and has never had an issue.

    "...This thing was still running the whole computer perfectly fine when I got back...." Read more

    "Great PSU. Handles 6 RX 580's like a champ...." Read more

    "...-Runs my enthusiast PC without issue and is pretty quiet compared to everything else in my PC...." Read more

    "...past the motherboard, sata cables and 2 video cards it came to a complete halt...." Read more

    8 customers mention7 positive1 negative

    Customers like the noise level of the system power device. They say it is very quiet.

    "...There was no issues with installation and it runs quiet and efficiently. Another rock solid offering from Seasonic." Read more

    "...(or lack thereof) is an important factor to me, and this unit is deathly quiet...." Read more

    "Very quiet. Under normal use (spreadsheets, word processing, internet and video browsing) the fan never kicks on...." Read more

    "...-Runs my enthusiast PC without issue and is pretty quiet compared to everything else in my PC...." Read more

    5 customers mention5 positive0 negative

    Customers appreciate the value of the system power device. They mention that it's a great deal on a good power supply.

    "...to three days of research, I determined it to be the best value available in top quality, high wattage power supplies...." Read more

    "-Extremely great for the value, I loved everything it was packaged with and it looks good; plus I know it will be reliable, as it is a Seasonic PSU...." Read more

    "...Amazing PSU Seasonic quality as expected, well worth the slightly higher cost for a quality PSU." Read more

    "Simply the best bang for your buck...." Read more

    4 customers mention4 positive0 negative

    Customers are satisfied with the efficiency of the system power device. They mention that it runs quietly and efficiently, and never misses a beat.

    "...There was no issues with installation and it runs quiet and efficiently. Another rock solid offering from Seasonic." Read more

    "...2 650w, 2 1000W, and 1 1200w. All are running near max power and never miss a beat. The most efficient and stable power supply I have ever used...." Read more

    "...As far as the PSU goes, it's Seasonic! Works perfect, love the efficiency and it's extremely quiet. Recommend Seasonic but NOT the shipper!" Read more

    "Great product so far, great packaging, runs smotly." Read more

    3 customers mention3 positive0 negative

    Customers find the installation process of the system power device to be easy. They mention that it has plenty of cables for various devices and that the installation was meticulous.

    "...There was no issues with installation and it runs quiet and efficiently. Another rock solid offering from Seasonic." Read more

    "...This unit was a pleasure to unbox. Everything was meticulous...." Read more

    "Very impressed with the quality of the product. Installed easily. Plenty of cables for various devices. Cables are not difficult to route thru case...." Read more

    8 customers mention5 positive3 negative

    Customers have mixed opinions about the cables that come with the system power device. Some say that they're flat and can be bundled up nicely, while others say that there are missing cables. Some customers also mention that the cables are unique to this model.

    "...They feel like they are made very well. It comes with plenty of cables. I have two on a mining rig. They are perfect for that." Read more

    "...And it appears the cables are unique for this model. I found some at a recommended retailer, but he has no 8-pin CPU cables...." Read more

    "...Does what it's supposed to do. Love the cables, since they're flat and can be bundled up really nicely with zip ties or velcro straps." Read more

    "...Installed easily. Plenty of cables for various devices. Cables are not difficult to route thru case...." Read more

    Top reviews from the United States

    Lubbock
    5.0 out of 5 stars Best PSU Company
    Reviewed in the United States on August 31, 2023
    Verified Purchase
    I bought the 1000w unit on in April of 2020 for my "Isolation build" when California had just started their very strict "stay home" and social distancing stuff.
    This thing has been powering a 3900x and rtx2080ti, both watercooled, in a lian li O11 Dynamic XL Der Bauer edition.
    This PSU has never had an issue running all of this for weeks at a time. I recently moved just North of Las Vegas with this build and accidentally left the whole thing on when I went on a 3 week trip. If you know anything about Death Valley, it is HOT and DUSTY. This thing was still running the whole computer perfectly fine when I got back.
    After 3 years of heavy use, a 3 week straight marathon didn't even phase it. If I didn't need to upgrade my PSU for my new build, this is the only part I would reuse out of my current build.

    Seasonic also makes most of Corsairs PSU's. If you see their ne RMx Shift series, that design was actually made by Seasonic before Corsair ever saw it.
    One person found this helpful
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    Michael Lovesky
    5.0 out of 5 stars Fantastic Power Supply
    Reviewed in the United States on June 2, 2022
    Verified Purchase
    I purchased this Seasonic 1000W power supply to replace my other Seasonic 750W. I recently upgraded my system and wanted to make sure it could handle future graphic's cards upgrades as they will require more power to run. There was no issues with installation and it runs quiet and efficiently. Another rock solid offering from Seasonic.
    Helpful
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    Frank
    5.0 out of 5 stars Powering a new workstation build
    Reviewed in the United States on July 2, 2017
    Verified Purchase
    Revision 8/30: Powered up for the first time on 7/7/17. Power supply went belly-up 8/25/17. Am about to embark of the journey to find out how well Seasonic provides customer service.

    I purchased this power supply for an X299/Core i9 workstation build. After close to three days of research, I determined it to be the best value available in top quality, high wattage power supplies. Noise (or lack thereof) is an important factor to me, and this unit is deathly quiet. I'm looking forward to a long and happy relationship with my Seasonic SSR-1200PD.
    2 people found this helpful
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    Brad
    4.0 out of 5 stars Simply the best bang for your buck.
    Reviewed in the United States on October 19, 2017
    Verified Purchase
    Great PSU. Handles 6 RX 580's like a champ. Only reason I am giving 4 stars is because it comes one PCI-e cable short of filling every available 8-pin slot.
    One person found this helpful
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    MoneroKing
    5.0 out of 5 stars This power supply is of great quality. The packaging is amazing and I love ...
    Reviewed in the United States on February 19, 2018
    Verified Purchase
    This power supply is of great quality. The packaging is amazing and I love the fancy bag for cables it comes with. You cannot beat seasonic, I personally believe they are the best power supplies in the market. You cannot go wrong with platinum! They feel like they are made very well. It comes with plenty of cables. I have two on a mining rig. They are perfect for that.
    Helpful
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    WeLikeFastCars
    5.0 out of 5 stars Great Deal on a Great Power Supply!
    Reviewed in the United States on July 30, 2017
    Verified Purchase
    I bought this at $169.90, to use on a X99 with a Xeon CPU, 8x ECC RAM, and 8x 2.5 inch hard drives.

    At the time I purchased, there is a $30 rebate. (Essentially making this a $150 power supply. Note: Purchased 7/29/17, Mailed rebate 8/6/17, Pending Response)

    This guy was reliable, the modular outputs are so well controlled that they allow 12 volt on all the PCIe connections. Not bad! I will update this review as time goes on. I only have the following gripes on this thing;
    -No Digital Power Management; You can't gauge your usage.
    -Not Titanium, this one is a Platinum power supply.
    One person found this helpful
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    Crilly
    5.0 out of 5 stars and a nice velour bag was included to keep your extra cables
    Reviewed in the United States on April 30, 2018
    Verified Purchase
    Very quiet. Under normal use (spreadsheets, word processing, internet and video browsing) the fan never kicks on. In fact I have had it for several months and haven's used my system hard enough to hear it yet.

    The attention to detail paid by the Seasonic group really shows through. This unit was a pleasure to unbox. Everything was meticulous. There was chrome details on the unit, Velcro cable ties were included, and a nice velour bag was included to keep your extra cables. All in all, I'm impressed. I would definitely buy again!
    One person found this helpful
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    Chris C.
    1.0 out of 5 stars Sent a defective PSU. A 1200 watt model that ...
    Reviewed in the United States on February 10, 2018
    Verified Purchase
    Sent a defective PSU. A 1200 watt model that could not power more than 2 video cards at 250 Watts a piece. When trying to plug in anything past the motherboard, sata cables and 2 video cards it came to a complete halt. Tried swapping around to different pci e inputs and tried various alternative cables nothing. Tried a backup Corsair power supply to ensure setup was not the issue. Everything booted no problem. I went through Seasonic’s tech support and they stop responding after I went through all the trouble shooting that all linked back to the power supply. Avoid at all cost. No support just excuses.
    3 people found this helpful
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    Top reviews from other countries

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    Hector Garcia
    5.0 out of 5 stars Fuente de poder Epica!
    Reviewed in Mexico on November 19, 2018
    Verified Purchase
    Esta fuente es una bestia , suministra excelentemente la energia , 0 fallas , ya aguanto 4 apagones y sigue trabajando como si nada , la verdad vale la pena invertir no tiren su dinero en genericas inviertanle a lo que tanto les costo comprar
    Report
    Jesus Humberto
    5.0 out of 5 stars Compra reciente Importado
    Reviewed in Mexico on February 10, 2018
    Verified Purchase
    Mi opinión es respecto a el envió del producto, el producto llego a la fecha indicada sin retraso de tiempo, no hubo ningún problema teniendo en cuenta que el producto era importado, lo único malo que le veo al ser importado es el trato que se le da en la aduana, ya que maltrataron mucho la caja original del producto, pero de hay en fuera el producto estaba impecable.
    Respecto al funcionamiento del producto, hasta ahora no lo he podido probar ya que aun estoy reuniendo las piezas para armar una pc de cero, pero he estado leyendo y es una de las mejores fuentes de poder en el mercado, teniendo en cuenta que es modular, con certificatorio platinum, ademas de tener una ventilación silenciosa y tener control de esta.
    Report
    xamtraxx91
    5.0 out of 5 stars Effizient & flüsterleise!
    Reviewed in Germany on February 3, 2019
    Verified Purchase
    Hallo, seit nun ca. 6 Jahren hatte ich ein 550 Watt Bronze Netzteil von Enermax im Betrieb. Erst gekoppelt mit einer GTX 660, dann eine GTX 960 und nun die GTX 1070 Ti von EVGA. Leider ist das Enermax Netzteil zu sehr in die Jahre gekommen und verursachte Spulenfiepen, wenn die 1070 Ti (oc) in GTA V, The Witcher 3 etc. auf Hochtouren lief. Also musste ein neues Markennetzteil her.

    Das 750er von SeaSonic ist einfach top. Super leise und hat genug Reserven für spätere Aufrüstungen/Computerneubau, da in meinem PC immer noch ein I5-3570k auf einem Z77er Mainboard und 12 Gb 1600er RAM werkelt. Ende diesen Jahres kommt aber was neues und da wird das Netzteil weiterhin sehr gut glänzen.

    Grob gesagt, bis auf den Preis bin ich völlig zufrieden - aber Qualität kostet nun mal.

    MfG
    Report
    Amazon Kunde
    5.0 out of 5 stars Alles super
    Reviewed in Germany on March 4, 2019
    Verified Purchase
    Gut
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    Queixume
    5.0 out of 5 stars Silencioso
    Reviewed in Spain on December 10, 2017
    Verified Purchase
    Elegido incialmente con cierto recelo, resultó ser la respuesta esperada y un acierto pleno para una unidad de este tipo
    Report