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Corsair AX1200i PSU Review

A simple black Yate Loon 140mm fan is responsible for the cooling of the AX1200i; well, most of the time, since the unit is programmed to stop the fan entirely when it is not necessary. Ironically, the D14BH-12 is a high speed ball bearing fan, capable of bursting your ears at maximum speed, but with a very broad operating range as well.

The OEM behind the AX1200i is no other than Flextronics, a rather new company which was also responsible for the AX1200. It certainly is a non-standard design and the layout is clearly based on that of the original AX1200 but Flextronics performed significant improvements. Quality wise, the construction of the AX1200i is immaculate, with perfect soldering spots and a very clean layout.

Corsair is using an A/C plug transient filter which encloses all of the necessary components for a basic transient filter in a nice little package behind the A/C plug. However, the designer continued the filtering stage onto the main PCB, installing 2 Y capacitors, one X capacitors and two chokes more than what the ATX design guide dictates as the minimum recommended.

Surprisingly, the primary side capacitors are made by Panasonic HD, being the most expensive and high quality commercial capacitors we have seen inside a power supply up to this date. The two 450V/470μF capacitors have an operating temperature of up to 105°C.

The secondary side capacitors are made by Rubycon and Nippon Chemi-Con, making this power supply an all-Japanese affair. Plenty of solid state capacitors have been used as well. Corsair apparently needed more space as they installed several vertical PCBs, housing the VRMs, the DSP and Corsair Link circuits, as well as the protective equipment and sensors. Two large transformers are being used in the AX1200i, which are feeding the vertical block housing all of the unit's connectors and distribution circuits via a large metallic rail.

Corsair's Link software is perhaps the most innovative feature of this power supply and certainly a world's first when it comes to power monitoring. Certainly, other companies released units capable of displaying their output, voltages and other useful data; however, Corsair not only made the AX1200i capable of displaying every single piece of performance data there could be about a power supply but also gives end users the capability to program their own profiles, control the speed of the fan, even create virtual overcurrent protection (OCP) rails on specific parts of the equipment. And it does not even stop there as the Corsair Link software can monitor the temperatures of every system component with a sensor, the speed of every fan connected directly on system components and monitor/control other hardware utilizing the Corsair Link interface, such as their new Vengeance RAM modules. All of the aforementioned features can be performed by the Beta version of the software, with Corsair working hard to clear the bugs and add even more features. 

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