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X-850

During the recent past, there have been a growing number of high-end systems builders looking for efficient and reliable power supplies in the higher power output ranges. This top-class power supply is able to deliver a complete package of ultra-high efficiency, superb dynamic response, and customizable cable arrangement that can be tailored to meet all specific needs. Sea Sonic stands behind the excellent build quality of this product by extending its customers worldwide a generous 7-year manufacturer’s warranty.

SKU: SS-850KM3 Active PFC Categories: ,
80plus-gold 

80 PLUS®Gold

Seasonic was the forerunner of creating the very first 80 PLUS® Gold certified power supply on the market and since that time it has built a very popular Gold series lineup that covers a full power range of power supplies with impeccable performance and efficiency. The highly efficient 80 PLUS® Gold certification guarantees greater than 87 %, 90 % and 87 % efficiency at 20 %, 50 % and 100 % operating loads, respectively. The clear advantage of buying a power supply with 80 PLUS® Gold rating is the fact that the less energy gets wasted during power conversion, the lower the operating costs will be for the user.


Fan Control S3FC-01

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.

S3FC

Benefits of this design

  • Reduced noise without increase in temperature;
  • Extended fan life due to the reduced number of fan rotations;
  • Optimized heat dissipation at all times;
  • Unsurpassed silent performance in Fanless Mode.

Additionally, there is a switch at the back of the power supply which allows users to customize their cooling needs by selecting between the Seasonic S2FC (fan control without Fanless Mode) and the S3FC (fan control including Fanless Mode).


Fan Type Sanyo Denki-01

Sanyo Denki Fan

The world-renowned Sanyo Denki ball bearing fans are made of the highest quality components to ensure ultra-low noise performance. The fan’s perfect balance and even rotations are achieved via the use of spoon-shaped, high-density plastic fan blades that are finished off with smoothed leading edges. Sanyo Denki fans are known for their strict tolerance ball bearings and precision copper axels. Instead of the industry standard of two balancing points they use three points to strengthen the mount and further stabilize the blade.


Double Ball Bearing Fan-01 

Double Ball Bearing Fan

These durable power supply fans play an important part in the temperature control of the entire system by not only keeping themselves cool but also by removing warm air from inside the computer case. Coupled with Sea Sonic’s fan control circuit, double ball bearing fans are great performers, relatively quiet and have a very long life span.


Japanese Capacitor-01

105 °C Japanese Capacitor

Premium quality Japanese capacitors with 105 °C rating increase overall reliability and extend product life.


DC to DC Converter Design-01

DC to DC Converter Design

The step down DC to DC converter design allows the power supply to be able to serve system components with various voltage needs. Not only is it a flexible, clean voltage conversion solution but it also maximizes the 12 V DC rail output, delivers superior dynamic response and , ultimately, provides for greater system stability.


Specifications are subject to change without prior notice.
Note: Since the beginning of 2015, Seasonic has implemented changes in its retail box design and modular cables are now packed in a black cardboard box.

X-850
AC InputVoltage: 100 V - 240 V
Current: 10 - 5 A
Frequency: 50 Hz - 60 Hz
DC OutputRail+3.3 V+5 V+12 V-12 V+5 VSB
Maximum Power25 A25 A71 A0.5 A3 A
125 W840 W6 W15 W
Total continuous power850 W
X-850 Technical Specifications
80PLUS®Gold
Form FactorIntel ATX 12 V
Dimensions150 mm (W) x 160 mm (L) x 86 mm (H)
Fan InformationFan Size120 mm
Fan ControlSeasonic S3FC
Fan BearingDouble Ball Bearing
Life Expectancy70,000 at 40 °C, 15 % - 65 % R.H.
Cable InformationModularityFully Modular
Cable typeFlat black cables
Electrical FeaturesOperating Temperature40 °C
MTBF @ 25 °C, excl. fan150,000 hours
AC InputFull Range
ProtectionOPP, OVP, UVP, OCP, OTP, SCP
Safety and EnvironmentalSafety and EMCcTUVus, TUV, Gost-R, CB , BSMI, CCC, CE, FCC, C-tick
Environmental ComplianceEnergy Star, RoHS, WEEE, ErP Lot 6, REACH
Warranty7 Years
Packaging information
Units per carton4
Individual carton size330 (L) x 130 (W) x 195 (H) mm
Shipping carton size545 (L) x 215 (W) x 405 (H) mm

Specifications are subject to change without prior notice.

ConnectorConnector CountLengths
MAIN-POWER-24-20-PIN-A1610 mm - modular
PCIE-8-PIN-A24/8 Pin - 650 mm- modular
8 Pin - 650 mm- modular
PCIE-6-8-PIN-1-A6600 mm - modular
600 mm - modular
550 + 100 mm - modular
550 + 100 mm - modular
SATA-5-PIN-A10400 + 120 + 120 + 120 mm - modular
400 + 120 + 120 + 120 mm - modular
300 + 120 mm - modular
PERIPHERAL-4-PIN-A5400 + 120 + 120 mm - modular
300 + 120 mm - modular
FDD-4-PIN-1-A1101 mm - modular

Specifications are subject to change without prior notice.

User-Manual-01

User-Manual-02

User-Manual-03

User-Manual-04

HardOCP | Editor’s Choice

April 4, 2013

“…the X-850 is simply another excellent member of the X-Series of power supplies from Seasonic…” “… generally better overall than any of the closest competition…” “In the power supply realm, when consumers think of quiet and efficient power supplies one of the first company that comes to mind is Seasonic.”

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HardwareLUXX | Excellent Hardware

February 1, 2013

“…das X-850 KM3 eine bessere Performance als so manch anderes Netzteil mit 80PLUS-Platinum-Aufkleber…”

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Kitguru | Must Have

December 15, 2012

“It really is as close to perfect as you are likely to see…” “…justifyably the finest power supply on the market today.”

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Kitguru | Must Have

September 4, 2012

“Technically there are no weaknesses with this design.”

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Ultra Game Zoom | ULTRA Gamezoom Award

April 2, 2012

“Das Seasonic X-850 punktet auf der ganzen Linie. Technik, Verarbeitungsqualität und Kühlkonzept lassen keinen Platz für Kritik. Auch der hohe Wirkungsgrad und die zahlreichen Anschlussmöglichkeiten sprechen für das Netzteil. Lediglich der hohe Verkaufspreis bremst die Euphorie etwas.”

(Read More)


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