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The ROG Strix 1000 Watt supply that we received has an EverFlow fan inside it, model number F1214025BL, rated 12V 0.2 AMP. This is a Double ball bearing fan made in China and has a maximum rotational speed of around 1,600 rpm to produce 74CFM. I don't know much about this fan or have previous experiences – its the first time I have seen one to be honest. I was a little surprised to see that ASUS did not opt for a better known Fluid Dynamic bearing fan in such a high end design.
Asus did send me a product guide PDF with the power supply and they state ‘Dual Ball Bearings have a remarkable lifespan of 80,000 hours, lasting twice as long as sleeve bearings and exceeding even fluid dynamic bearings.' Personally I would argue that the reduced bearing noise and more than adequate long life under general conditions sways a decision in favour of FDB fans, but we can agree to disagree.
The design is by Great Wall and it seems very clean throughout. Asus told us they wanted to collect this power supply to use elsewhere after our technical analysis so we didn't do the complete breakdown as we normally would.
There are primarily Rubycon and Nichicon capacitors in the design, all high grade 105c Japanese rated. The two primary capacitors are rated 680uF and 330uF for a total of 1010uF.
The primary ROG branded heatsinks are large – it seems a little excessive to me considering the platforms rated efficiency, but they certainly wouldn't hinder the cooling regardless and will likely aid the extended 0dBa operation. A daughter card holds the DC-DC converters – this generates the minor rails.
The design has an APFC converter, along with a half bridge topology and an LLC resonant converter. A synchronous rectification system on the secondary side regulates the 12V rail, with two DC-DC controllers and six Infineon FETs handling the minor rails.
