Kingwin Power Force 850W Power Supply Review

While not a "go to" enthusiast brand, Kingwin has produced some excellent computer desktop power supplies over the last five years and these have usually be great values. Does Kingwin continue the trend with its new Power Force 850W model sporting good efficiency, modular cabling, and reasonable pricing.


Today we have the opportunity to have a look at a power supply being branded by KWI Technology Inc., or better known to most readers as "Kingwin." Kingwin has been in business since 1992 manufacturing mobile racks and general storage solutions. Today though, we find Kingwin branding, and in some product categories developing, a number of different components and peripherals including cases, CPU coolers, liquid cooling systems, and power supplies in addition to its core business markets. Today, we will be looking at one of Kingwin’s new power supply offerings the Power Force 850 (PF-850). This particular product is developed in conjunction with Sirfa.

Sirfa Electronics Co., Ltd. is a name that is not that familiar to most users but Sirfa has been around since 1996 when Sirtec established Sirfa as a factory in the Sirtec group on mainland China. Recently, June 2008, Sirtec sold off its interest in Sirfa making the company independent of the Sirtec brand. As such, while we have not seen any Sirfa produced power supplies under the Sirfa brand, some of the Sirtec units of the past were produced at the Sirfa facility. Additionally, we have seen Sirfa providing OEM services for Thermaltake, Enermax, PC Power & Cooling, Tuniq, Lepa, and others with very mixed results.

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Is the Force With This One?

The Kingwin PF-850 is the first of the Power Force units we have seen from Kingwin and the first unit from Kingwin we have seen that is not produced by SuperFlower. All of our recent reviews of Kingwin products have been extremely positive and we certainly would hope to see that continue today. However, all of those previous modes, as stated above, come from a different OEM and are seemingly positioned as much higher-end products than this unit is today. Given that this product is slotting into a more mainstream segment, which is likely to be not only performance conscious but also price conscious, it will be interesting to see what Kingwin has to say about this unit:

آ• Model: PF-850

آ• 80 Plus Bronze Certified

آ• Modular Cables

آ• Support Intel Core i7 / Core 2 Quad / Core 2 Duo &

آ• AMD Phenom X4 / Phenom X3 / Athlon 64 X 2 High Performance CPU

آ• More than 2,000 times On/Off test

آ• Full Range design from 100V~240V (Active PFC)

آ• More than 85 % Efficiency at 50% Load

آ• Output Over / Under Voltage Protections

آ• Over Power/Short Circuit/Over Current /Over Temperature Protections

آ• Stable +12V Current

آ• Two 8in +12V Connectors

آ• Four PCI Express Connectors 8 pin (6 +2 Pin)

آ• Eight SATA Connectors

آ• Six Molex Connectors

آ• Two Floppy Connectors

آ• Single +12V Output Rail

آ• 140 mm Fan

آ• Support High Performance Nvidia SLI GPU

آ• Compliance with ATX 12V v2.2, EPS 12V v2.91, and SSI EPS 12V v2.92 Specification

آ• Black Coating Finish

آ• Intelligent Auto Fan-speed Control

آ• Eup 2013 Compliant

آ• RoHS Compliant

Since all we get initially is a product feature list, let’s move on and see what we can expect when a user purchases the Kingwin PF-850 power supply at retail in terms of documentation, accessories, cable count, rail layout, output characteristics, and general build quality.