Rosewill Capstone 450W and 650W 80Plus Gold
by Martin Kaffei on March 21, 2012 8:00 AM EST- Posted in
- Cases/Cooling/PSUs
- PSUs
- Rosewill
- Capstone
- 80 Plus Gold
Electronics
This time SuperFlower is the manufacturer. In the pictures above we show the 650W version only since the 450W model consists of the same design. Rosewill uses a resonant converter like Enermax and Seasonic; on the input side, a half bridge circuit is used. Furthermore, the model has some small PCBs, where the one on the left side is used for +3.3V and +5V. Where needed, a protective foil against short circuits is used. The output wires are grouped together with serveral cable ties to improve airflow.
Behind the AC input are a total of four Y-capacitors, two common mode chokes, two X-capacitors, a thermistor, and a relay. Nevertheless there is no MOV. All capacitors are made by Nippon Chemicon (SMQ and KY series). In the power factor preregulator and behind we can find a few MOSFETs with a low turn-on resistance, and a PFC diode without any reverse recovery time. This is a good solution when using the continuous current mode, because the reverse recovery time causes power loss. One point of criticism is that SuperFlower should use another PCB material in a high-end product.
Facebook
Twitter
RSS
33 Comments
View All Comments
MeanBruce - Saturday, March 24, 2012 - link
Wow, I started reading some comments, and gee all this discussion however constructive, seems so many better things to do, especially on a Saturday! Make it simple on yourself, purchase a Corsair AX850 or one of the upcoming Corsair platinums and never read another PSU review for the entire 7year warranty, life is way too short if you ask me!;)zootjeff - Thursday, June 21, 2012 - link
Any ideas how well these work without minimum load? Many of us tinkers and hackers like to use ATX power supplies for other things. Like a 12V power supply with 5VSB. In my application I'm looking for a 80 Plus Gold where I just draw 100mA to 20 amps of 12v and Zero 3.3 and 5v.. How well regulated is the 12v with no load on the 3.3 and 5?Thanks,
-
Jeff
RosewillEye - Friday, May 10, 2013 - link
Thank you for posting the article. The details are very precise, and get all questions answered. Feedback from owners of the Capstone series is much appreciated, and we're glad to see them being discussed. Rosewill aims to continue to combine great quality with great value.