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Corsair are using a NR140P Fluid Dynamic Bearing fan. This is rated 12V DC 0.22A. You can buy these fans for around the £20 mark HERE. So they are quite expensive. This is the same fan we saw in our reviews of earlier generations years ago, and even the plastic surround to focus air flow over specific parts of the internals is identical.
Don't fix what isn't broken I say – the NR140P is a superb fan.
The primary side of this unit is full bridge topology – it has an APFC and a LLC resonant converter. On the secondary side a synchronous rectification scheme is used for 12V with a pair of DC to DC converters generating the minor rails. It has been created for Corsair by CWT under their guidance.
The soldering and build quality is at a level we would expect for a flagship model. The unit is clean and well designed throughout. If you pay attention you can see two mains transformers were used beside each other instead of a single larger on. This helps reduce the demand for space.
The PCB is large which helps with cooling efficiency. Corsair and CWT have opted for smaller heatsinks due to the physical dimensions and rated Platinum levels of efficiency. On the secondary side the 12V FETs are installed on a vertical board.
There are three 105c rated Japanese Nippon Chemi Con Capacitors in the HX1500i from their KMZ series. Two are rated 450V 680uF and the third is a little smaller rated 420V 470uF. This gives a total of 1830uF.
The unit ships with OVP, OCP, SCP, OPP and OTP protections.
