It is well known that Rosewill is a company that started off as a subsidiary of Newegg, originally focused on marketing simple bits and hardware at very competitive prices. Rosewill grew vastly in a relatively short time and fledged into a stand-alone company with an impressive range of products. Today, Rosewill offers a myriad of products from simple cables and adapters to advanced computer hardware, home appliances and office products. The sheer number of products Rosewill markets today is makes ones mind boggle. Nevertheless, the company is strongly localized, with their products readily available only in the North American markets. Rosewill is making moves to enter other regions and some, but not all, of their products can also be found in Southeast Asia, Japan, China and Australia.

Rosewill's marketing policy is strongly based on the offering of low cost products, not differentiation. Despite their very large range of products, generally speaking, most of them are designed so as to compete in terms of value, with the company and the designers trying to outprice the competition, not outperform it. Rosewill will commonly minimize investing on features they deem unnecessary, such as aesthetic improvements or innovative elements, trying to deliver products of similar quality and performance as the competition at a lower price. Today we will be having a look at the best PSU series Rosewill currently offers, the Quark, the embodiment of Rosewill's business stratagy.

On paper, the specifications of the Quark PSUs are very impressive, with high current lines and 80Plus Platinum efficiency. As a matter of fact, Rosewill went through the trouble of getting official 80Plus certifications for every unit of the series, not just one or two models. All of the Quark PSUs also come with a five-year warranty. However, there are no fancy features such as lighting, USB interfaces and power meters. Rosewill supplied us with four out of the six units of the series, the 750, 850, 1000 and 1200 Watt models, so we are having a very thorough look at the series in this review.

Rosewill Quark 750W - Power specifications ( Rated @ 40 °C )
AC INPUT 100 - 240 VAC, 50 - 60 Hz
RAIL +3.3V +5V +12V +5Vsb -12V
MAX OUTPUT 22A 22A 62A 2.5A 0.3A
120W 744W 12.5W 3.6W
Rosewill Quark 850W - Power specifications ( Rated @ 40 °C )
AC INPUT 100 - 240 VAC, 50 - 60 Hz
RAIL +3.3V +5V +12V +5Vsb -12V
MAX OUTPUT 25A 22A 70A 2.5A 0.3A
120W 840W 12.5W 3.6W
Rosewill Quark 1000W - Power specifications ( Rated @ 40 °C )
AC INPUT 100 - 240 VAC, 50 - 60 Hz
RAIL +3.3V +5V +12V +5Vsb -12V
MAX OUTPUT 25A 25A 83A 2.5A 0.3A
120W 996W 12.5W 3.6W
Rosewill Quark 1200W - Power specifications ( Rated @ 40 °C )
AC INPUT 100 - 240 VAC, 50 - 60 Hz
RAIL +3.3V +5V +12V +5Vsb -12V
MAX OUTPUT 25A 22A 100A 2.5A 0.3A
120W 1200W 12.5W 3.6W


Packaging and Bundle

Rosewill supplies the Quark series PSUs in typical, sturdy cardboard boxes. All of the boxes share the same artistic theme, a conceptual shape of a few quarks on a black background, with information and specifications printed on the sides and back of the box. Only the 750W version has a slightly smaller box, hinting that this unit has significant differences in comparison to the more powerful models.

The Quark series PSUs are not accompanied by the most generous bundle that we have ever seen, but it is better than Rosewill's usual frugal bundle. Inside the box we found a very basic manual, an AC power cable, a few short cable ties, four black thumbscrews and a nylon pouch with the modular cables stored inside it.

To our surprise, the modular cables of the Quark PSUs are made of simple, color coded wires bounded with black sleeving. These are the most basic cables available and are usually being used by the budget segment of the market, for small PSUs designed for the average home/office PC.

  Rosewill Quark
Rosewill Quark
Rosewill Quark
Rosewill Quark
Connector type Modular Modular Modular Modular
ATX 24 Pin 1 1 1 1
EPS 4+4 Pin 2 2 2 2
EPS 8 Pin - - - -
PCI-E 6+2 Pin 4 6 8 8
PCI-E 8 Pin - - - -
SATA 8 10 12 15
Molex 4 4 5 5
Floppy 1 1 1 1
The Rosewill Quark Series PSUs
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  • RaduZ - Thursday, January 14, 2016 - link

    What's so great about these PSUs ? That platinum raiting means nothing... I was looking at the 750W one, if you compare it to lets say the Super Flower Leadex 750W Gold (or EVGA Supernova for the US market) it has the same price, in tests the SF has almost the same eficiency and way better regulation and better ripple control. (both are 130$ on newegg)
  • kaborka - Monday, January 18, 2016 - link

    One thing that is really important to me to see in a PSU review is whether it will work with a non-sinewave UPS or if the active PFC will shut it down. I have a significant investment in older UPS units and need compatible PSUs.
  • shadowjk - Saturday, January 23, 2016 - link

    Amen to that! This is very interesting to me too.

    Not only whether the Active PFC will cause problems, but also for us europeans whether the components such as the capacitors on the PSU can withstand the higher peak to peak voltage created by modified sine UPSes as compared to the peak to peak voltage of a real sine wave.
  • Oxford Guy - Friday, January 22, 2016 - link

    "What surprised us was the acoustics performance of the 750W version, which is greatly inferior to that of the significantly more powerful units."

    It's not surprising. Ball bearing fans are noisier, especially models rated for that RPM. Single ball bearing fans are the worst.

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