Internal Design

ATNG makes the electronics this time, but 80 Plus Platinum power supplies are almost always the same. In fact the PCB looks like a modified Golden Green (Super Flower). The core is an LLC resonant converter with synchronous rectifying on the secondary side, and there's a DC-to-DC converter at the far right as well to improve voltage regulation. Another advantage is the high 12V power rating. The filtering stage is located on a small sister PCB near the bottom of the picture and includes all the important components.

An IC offers most safety functions for all outputs and the primary circuit has some protections too; nevertheless, overcurrent protection is missing. There are two large heatsinks instead of the usual three, but all the current MOSFETs have a low power dissipation. Soldering quality is satisfying, and we couldn't find any dry soldered joints, though a few parts did get a bit too much solder. On one pin we found a bad wetting angle caused by the excessive use of solder.

External Impressions and Cables Load Test Results
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  • pattycake0147 - Friday, September 14, 2012 - link

    Also not trying to be a jerk. If you're going to talk about how expensive it is on the first page, then tell me the price. I had to search for it and then finally found the price listed on the last page.
  • doctormonroe - Friday, September 14, 2012 - link

    In the article it states that the warranty length is 5 years, however according to Rosewill's product page the Fortress-450 has a 7 year warranty.
  • justaviking - Friday, September 14, 2012 - link

    Article is not consistent with itself:

    Page 2 says "7-year warranty"
    Page 6 says "5-year warranty"
  • radbmw - Friday, September 14, 2012 - link

    Warranty is 7 years according to Newegg, as well.
  • Uritziel - Friday, September 14, 2012 - link

    I have to agree with the other commenters. This article is well below the quality level I've come to expect from Excepting the images, every aspect is substandard. The edits in response to the other comments helped, but several parts (esp. the conclusion page) are still painful to read. I don't recognize the author, and I don't want to hate on him; however, this article reads like a very early rough draft.
  • infoilrator - Friday, September 14, 2012 - link

    Very good review, despite grammar patrol,
    Rosewill is doing very well in price/performance/quality here. I also find the Capstone line moredesirablee in price, especially when discounted.
  • bobbozzo - Friday, September 14, 2012 - link

    bottom of page 2, change 37W to 37A.
  • bobbozzo - Friday, September 14, 2012 - link

    page 6: "performancs" should be performance.
  • tynopik - Friday, September 14, 2012 - link

    I do appreciate the breakdown of where exactly each connector is on each cable.

    But I would like to see more punishment of the PSUs. How do they hold up in extreme situations?

    There have been reports that some PSUs don't work well with square-wave UPSs.

    Do they hold up in hot conditions?

    How do they handle low voltage (brownout) conditions? (say 90V)

    How do they handle voltage swings? (Hook them up to a variac, start twisting the dial and see what kind of transients you can generate)

    If they face a large load at once (say a bunch of hard drives spinning up simultaneously), how does it maintain the voltage levels?

    If you short out a cable, will you blow up anything?
  • wrkingclass_hero - Saturday, September 15, 2012 - link

    Someone get this man a job at Anandtech.

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