Rosewill is a familiar name here at AnandTech. It's Newegg's in-house
brand, through which they sell products such as notebook accessories,
peripheral equipment, cases and power supplies. Their stated goal is to "bring quality hardware and affordable prices together". In most cases they really care about the pricing, but today we will review one of their more expensive high-class offerings. Not long ago we tested their Gold PSUs, which also belong to this classification; the new products go one step further.
The Fortress series from Rosewill has four different versions, all with
80 Plus Platinum certification and non-modular cables. We'll be
focusing on the 450W model in this article as this rating is interesting
for the largest number of potential buyers. Japanese capacitors and a
single 12V output are just two out of many features. Let’s see how the
unit performs and whether it is able to surpass their Capstone series.
Delivery Contents and Specifications
The power supply comes in a dark box with various product
specifications listed across all the sides. The package prominently
displays the 80 Plus Platinum certification, which can certainly help
attract potential buyers. 90%/92%/89% efficiency at 20%/50%/100% load
are the requirements and these values are difficult to reach. In
addition Rosewill offers a 7-year warranty. Features include the special
black coating and the single 12V output. All the necessary extras for
installation are present, including the usual stuff like a power cord,
screws, manual, and several cables ties.
At first we were not able to identify the manufacturer of this fan as
Rosewill is the only name we saw on the label. However, the model number
RL4ZB1352512M indicates that GlobeFan is the company behind this
product. This is a ball bearing type which takes 0.28A. At best GlobeFan
is slightly better than Yate Loon, but it could have been worse since
many brands still use sleeve bearings—even in expensive PSUs.
The Fortress has one 12V output, which can be loaded with 37A according
to the manufacturer. Almost the full power is provided here because of
the DC-to-DC VRM. The 5V and 3.3V combined output power is just 100W,
but even such ratings are enough to power a modern PC. +5VSB can handle
2.5A (or 12.50W).
