Today's Hard|Forum Post
Today's Hard|Forum Post

Rosewill Quark-550 550W Power Supply Review

Rosewill was a Newegg "house brand" that has broken out to other retailers and you might have seen its name on all types of products. Today we are seeing what Rosewill accomplishes when it brands a 550 watt "Platinum" PSU. The 550W PSU market is crammed with competition...good competition at good prices.


Today, we look at another new product from a company familiar to many HardOCP readers, Rosewill Inc a subsidiary of Newegg since its inception in 2004. Newegg was founded in 2001 by it's then parent company ABS Computer Technologies who has been a part of the enthusiast computer market since its founding (now defunct [H]Consumer covered a few of its fully built computer systems). Over the years, we have seen a few power supplies from the ABS Computer Technologies/Newegg/Rosewill conglomerate branded by both ABS and Rosewill. Currently, however, the Rosewill portfolio is much more complete when it comes to peripherals in general and power supplies in particular than what we used to see from ABS. Today, we are looking at our second Rosewill branded power supply with the Quark-550 (Quark 550) produced by Enhance.

Enhance Electronics Co. Ltd. was founded 30 years ago now in 1986. While a major power supply OEM Enhance is not nearly as well known to most users as some other OEMs as its core business focus has been outside of the desktop market in areas such as servers, embedded, and telecom markets. However, its products have started to surface in the US consumer realm in the last year or so under the likes of SilverStone, Silverpower, Antec, Cooler Master, Thermaltake, as well as the occasional Enhance branded model, and Rosewill.

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The Quark Has Its Quirks

Today's Rosewill Quark-550 is the just the second power supply we have seen sold under the Rosewill brand. At 550W though, it is going to be facing healthy competition from a plethora of other brands that have much longer histories of making quality power supplies, and much greater brand recognition. That said, at 550W this is just low enough in power output for this unit to also be competing with lots of low quality units that are either low quality because they are older designs or just garbage to begin with. Indeed, at 550W we rarely see a lot of high-end products from vendors so the field could be wide open. The last Rosewill unit we saw (the Capstone 750W) turned out to be very competitive at a killer price point, if Rosewill can do the same things today that they did with the Capstone 750W they could mop up in this segment. Before moving on though, what does Rosewill have to say about this unit:

80 Plus Platinum Certified To Deliver Over 92% Efficiency

LED Lights Will Indicate A Malfunction On +3.3V, +5V, +12V And Other Rails

Fully Modular Design Provides Cable Management

ATX 12V V2.3-Ready, Supports EPS 12V 2.92 And Backward Compatible With ATX 12V 2.01

Active Power Factor Correction (PFC) With PF Value Of 0.99

Crossfire And SLI Support

Silent 135mm Fan With Auto-Speed Control

100% High-Quality Japanese Capacitors

Over Current/Voltage/Temperature/Power Protection, Short Circuit Protection, And Under Voltage Protection

UL, FCC, CE, Nemko Certified

Extra-Long Cables Support Full Size Gaming Chassis

5-Year Warranty

Well, that generic list of features that we find on many truly generic products did little in the way to inspire confidence in this unit today. Let’s move on and see what we can expect when a user purchases the Rosewill Quark-550 power supply in retail in terms of documentation, accessories, cable count, rail layout, output characteristics, and general build quality.