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  • NO ADDITIONAL COST: You pay $0 for repairs – parts, labor and shipping included.
  • COVERAGE: Plan starts on the date of purchase. Malfunctions covered after the manufacturer's warranty. Power surges covered from day one.
  • EASY CLAIMS PROCESS: File a claim anytime online at www.Asurion.com/Amazon or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon.com Gift Card for the purchase price of your covered product or replace it.
  • EXPERT TECH HELP: Real experts are available 24/7 to help with set-up, connectivity issues, troubleshooting and much more.
  • MORE DETAILS: Additional information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase (if you do not see this email, please check your spam folder). Contact us if you cannot locate your plan confirmation and Terms & Conditions via email at AmazonFeedback@Asurion.com.
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4 Year Office Equipment Protection Plan

from Asurion, LLC
  • NO ADDITIONAL COST: You pay $0 for repairs – parts, labor and shipping included.
  • COVERAGE: Plan starts on the date of purchase. Malfunctions covered after the manufacturer's warranty. Power surges covered from day one.
  • EASY CLAIMS PROCESS: File a claim anytime online at www.Asurion.com/Amazon or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon.com Gift Card for the purchase price of your covered product or replace it.
  • EXPERT TECH HELP: Real experts are available 24/7 to help with set-up, connectivity issues, troubleshooting and much more.
  • MORE DETAILS: Additional information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase (if you do not see this email, please check your spam folder). Contact us if you cannot locate your plan confirmation and Terms & Conditions via email at AmazonFeedback@Asurion.com.

3 Year Office Equipment Protection Plan

from Asurion, LLC
  • NO ADDITIONAL COST: You pay $0 for repairs – parts, labor and shipping included.
  • COVERAGE: Plan starts on the date of purchase. Malfunctions covered after the manufacturer's warranty. Power surges covered from day one.
  • EASY CLAIMS PROCESS: File a claim anytime online at www.Asurion.com/Amazon or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon.com Gift Card for the purchase price of your covered product or replace it.
  • EXPERT TECH HELP: Real experts are available 24/7 to help with set-up, connectivity issues, troubleshooting and much more.
  • MORE DETAILS: Additional information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase (if you do not see this email, please check your spam folder). Contact us if you cannot locate your plan confirmation and Terms & Conditions via email at AmazonFeedback@Asurion.com.
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Seasonic FOCUS Plus 850 Platinum SSR-850PX 850W 80+ Platinum ATX12V & EPS12V Full Modular 120mm FDB Fan Compact 140 mm Size Power Supply

4.7 out of 5 stars 295 ratings

$189.99

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    This fits your .
  • Make sure this fits by entering your model number.
  • COMPACT SIZE - 140 MM DEEP; High power output to size ratio.
  • FULL MODULAR; use only the cables you need to reduce clutter and improve airflow for a better ventilated system.
  • 80 PLUS PLATINUM; 90% efficient at 20% load, 92% efficient at 50% load, and 89% efficient at 100% load.
  • HYBRID SILENT FAN CONTROL; The industry's first, Seasonic patented, advanced three-phased thermal control achieves optimal between silence and cooling. This Hybrid Silent Fan Control functions in three operational stages: Fanless Mode, Silent Mode, and Cooling Mode.
  • 10 YEAR WARRANTY; Our commitment to superior quality.

Buy it with

  • Seasonic FOCUS Plus 850 Platinum SSR-850PX 850W 80+ Platinum ATX12V & EPS12V Full Modular 120mm FDB Fan Compact 140 mm Size P
  • +
  • SAMSUNG 980 PRO SSD 1TB PCIe 4.0 NVMe Gen 4 Gaming M.2 Internal Solid State Hard Drive Memory Card, Maximum Speed, Thermal Co
  • +
  • AMD Ryzen 7 5800X 8-core, 16-Thread Unlocked Desktop Processor
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  • Power Supply
  • Product Description

    Seasonic engineers have created a brand new product line based on advanced technology emanating from many years of intensive active research. The result of this development is the solid FOCUS+ Series, which implements modern design and shows outstanding electrical performance. This power supply is small and entirely modular, which will be hard to resist. It is available in 80 PLUS Platinum efficiency ratings.

    Compare with similar items


    Seasonic FOCUS Plus 850 Platinum SSR-850PX 850W 80+ Platinum ATX12V & EPS12V Full Modular 120mm FDB Fan Compact 140 mm Size Power Supply
    CORSAIR HX Series, HX850, 850 Watt, 80+ Platinum Certified, Fully Modular Power Supply
    EVGA Supernova 850 P6, 80 Plus Platinum 850W, Fully Modular, Eco Mode with FDB Fan, 10 Year Warranty, Includes Power ON Self Tester, Compact 140mm Size, Power Supply 220-P6-0850-X1
    Seasonic Prime PX-850, 850W 80+ Platinum, Full Modular, Fan Control in Fanless, Silent, and Cooling Mode, 12 Year Warranty, Perfect Power Supply for Gaming and High-Performance Systems, SSR-850PD.
    Seasonic PRIME 850 Titanium SSR-850TR 850W 80+ Titanium ATX12V & EPS12V Full Modular 135mm FDB Fan Power On Self Tester 12 Year Warranty Power Supply
    Customer Rating 4.7 out of 5 stars (295) 4.7 out of 5 stars (2067) 4.7 out of 5 stars (3039) 5.0 out of 5 stars (2) 4.7 out of 5 stars (212)
    Price $189.99 $139.99 $119.99 $219.99 $269.99
    Sold By Autocare Depot Amazon.com Amazon.com Amazon.com Prime Service For Less
    Item Dimensions 5.51 x 5.91 x 3.4 inches 5.9 x 7.1 x 3.39 inches 3.4 x 5.9 x 5.5 inches 13.5 x 5.5 x 8 inches 3.39 x 6.69 x 5.91 inches
    Item Weight 6.40 lbs 4.29 lbs 3.31 lbs

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    Warranty & Support

    Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
    Product Warranty: For warranty information about this product, please click here

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    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    295 global ratings

    Top reviews from the United States

    Reviewed in the United States on January 20, 2019
    136 people found this helpful
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    Reviewed in the United States on June 25, 2019
    One person found this helpful
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    Reviewed in the United States on April 9, 2019
    Customer image
    5.0 out of 5 stars Efficiency Savings that Matter
    By Kathy Patterson on April 8, 2019
    Typically, people think about almost everything else in a PC first like a graphics card, CPU etc., then the power supply last. Though in fact power supplies are arguably the most important part to any build. Think about it this way, they convert high AC power from your typical home to DC power that every electronic in your systems can use. Essentially it is the heart of your system, but instead it delivers power instead. So, if your heart isn’t running at optimal efficiency then you wont be either. Again, the analogy applies to your PC, though in this case, and analogy, you can buy a better/more efficient heart.

    That’s where the Seasonic Focus Plus Series comes in! Now I specifically purchased the 850 Platinum (SSR-850PX) and truly love this thing. Not only does it have awesome features like modularity, OPP/OVP/UVP/SCP/OCP/OTP, high 70A on the 12+ rail (makes 840W basically the whole power supply), but its small efficient and reliable! Seasonic power supplies are one of the most reliable in the power supply business. Plus spending a bit up front on a higher efficiency power supply will over time save you money, and the Focus+ line have a 10-year warranty to ensure those savings.

    Before I get into the math behind power efficiency calculations. All of these calculations were done using the general knowledge from Seasonic’s website and USA kilowatt-hour power averages and a little understating of power calculations that anyone could do on their own.

    So, let’s get right into it (with the help of spreadsheets)! Using all the standards from 80 Plus (80%) up to Titanium (90%) we can get the cost in electricity over time. So, the more efficient the power supply is running the less power is lost in terms of heat. So, to get relatively linear accurate results for one day we multiply a kilowatt-hour of use ($0.12 is US average) times hours in use per day, then multiply those by the ratio of actual wattage pulled and max wattage of the PSU. So for an efficiency of 89 running at max load for 24 hours it would look like 0.12*24*(901/850)=$3.04 of electricity used for a full day in use. As it can be seen the higher the efficiency the lower the cost per day. Graphing this trend over 10 years shows that buying a more efficient power supply can save money for a small initial investment.

    Also, that is expecting the power supply will last that long to achieve the savings. Even after 3 years the trend is clear the more efficient power supplies will save money. So, buying a power supply with a longer warranty will ensure those savings. Additionally, buying a cheaper power supply with lower efficient rating will most likely fail sooner and you’ll have to buy another one anyways.

    Though it’s important to note that initial power supply cost, kilowatt-hour, and specific efficiency tolerances may vary per model, USA location, and wattage. With all that considered the overall electricity calculation methodology can apply for all configurations of PSU’s.

    The TL;DR version:
    Invest a bit and buy a higher efficient power supply. It will be a high cost initially, but after about 2-3 years your guaranteed to be saving money overall in electricity. Plus, you’ll have a much more reliably power supply with a longer warranty to power your expensive equipment. Also, you’ll be helping the environment with less electricity used!

    This review was a non-biased factual review written by an average consumer with access to general product information. All calculations could be redone to verify the results obtained in the associated images. Hope this review helps someone understand power efficiency a little better!
    Images in this review
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    2 people found this helpful
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    Reviewed in the United States on April 2, 2019

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    james
    5.0 out of 5 stars 5 stars EASY
    Reviewed in the United Kingdom on May 12, 2018
    7 people found this helpful
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    Costica Dochitanu
    5.0 out of 5 stars I'll buy it again
    Reviewed in the United Kingdom on August 15, 2019
    Adrian Mihai Nicolae
    5.0 out of 5 stars Good quality PSU for decent amount of money.
    Reviewed in the United Kingdom on February 16, 2019
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    1.0 out of 5 stars Una gran perdita di tempo.
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