850W SEASONIC FOCUS PLUS GOLD Series Power Supply
The Center of Attention
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.
80 PLUS® Gold Design
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 FOCUS PLUS Gold Series achieves 80 PLUS® Gold certification with its 90% efficiency at 50% system load.
Cable-free Connection Design
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. This breakthrough solution not only lowers the chance of production errors during manual insertion but it also improves output power quality.
- High Efficiency, 80 PLUS® Gold Certified
- Single 70A Rail powers multiple Video Cards
- Fully Modular Cabling Design
- Compact Size: 140 mm long
- 120mm Fluid Dynamic Bearing (FDB) Fan w/ Seasonic Hybrid Silent Fan Control
- S3FC: Fanless until 30% load
- Gold Plated Connectors
- Highly Reliable Japanese 105° C Aluminum Electrolytic Capacitors
- Tight Voltage Regulation: 12Vdc, 5Vdc & 3.3Vdc ±3%
- Internal Cable Free Connection Design
- Seasonic 10 Year Manufacturer Limited Warranty
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. 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).
- 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
The Fan Control Button
The fan control button can be found on the back of the back of the FOCUS PLUS power supply, next to the power switch.
The image here illustrates how to select different fan control modes to suit your need. Do not press the button if you wish to include the Fanless Mode, which means the fan in the power supply will not spin when the power supply is under light loads.
Press the button if you wish to have the fan spin at all times, even at lower loads.
Fluid Dynamic Fan Bearing
High performance Fluid Dynamic Bearing (FDB) fans are designed to take advantage of the impact absorbance effects of oil. They are extremely reliable and generate considerably less operating noise and heat than ball bearing fans. The lubrication of the bearing surface reduces friction and vibration and therefore lowers overall power consumption. Due to the effortless, quieter rotations and its robust construction, this reliable fan technology also greatly increases the lifespan of the fan.
How FDBs Work
When the fan shaft rotates, high pressure oil drifts along the grooves of the bearing sleeve to generate a thin layer of lubrication between the bearing faces. As the speed increases, so does dynamic oil pressure and the shaft is lifted from the bearing to create smooth, effortless rotations. The herringbone shape of the groves helps to efficiently channel the lubricant and avert leakage.
|Make and Model||Seasonic FOCUS PLUS 850 GOLD 850W Power Supply|
|Input Voltage||100 ~ 240Vac, 50/60Hz|
|Efficiency||80+ Gold Certified|
|Cooling||1x 140mm FDB (Fluid Dynamic Bearing) Cooling Fan|
|MTBF||100,000 Hours @ 25° C, 15 ~ 65% RH (non-condensing)|
|Protection||Over Current protection (OCP)
Over Voltage protection (OVP)
Over Power protection (OPP)
Over Thermal protection (OTP)
Short Circuit protection (SCP)
Under Voltage protection (UVP)
|Connectors||1x Motherboard 20+4 pin Connector (610mm)
2x CPU 4+4 pin Connector (650mm)
6x PCI-e 6+2 pin Connectors
10x SATA Connectors
5x 4-pin Molex™ Peripheral Connectors
1x 4-pin Floppy Connector
|Form Factor||ATX 12V|
|Temperature||Operating: 0 ~ 50° C|
|Compliance||BSMI, CB, CCC, CE, cTUVus, EAC, FCC, TUV|
|Dimensions / Weight|
|Dimensions||140 x 150 x 86mm|