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Corsair Professional Series AX1200i Power Supply Review

Corsair power supplies have earned a great reputation over the years, and the Professional Series AX1200i is their best to date, which in itself is quite an achievement.

Aesthetically, the unit is finished to the highest standards, something we expect from Corsair. The paintwork is resistant to scratching, and it doesn’t attract fingerprints either.

The bundle is exemplary and contains a wealth of little extras which add value. The Corsair Link interface module is certainly a talking point and it will appeal to the high end enthusiast audience who love to spend time tweaking their systems. The option to adjust from single rail to independent rails for devices is certainly welcomed … between 20A and 40A per connector.

Technically, the unit doesn’t fail to deliver. It delivers rock solid load regulation and it handled our intensive cross loading tests with relative ease. Ripple suppression is impressive, particularly via the +12V output, which peaked at 25mV under full load conditions. +3.3V and +5V rails weren’t quite as impressive, but they fell well within rated ATX tolerance specifications.

Corsair have always tried to deliver class leading acoustic performance from their high end power supplies and in this regard the AX1200i is a success. The non aggressive fan profile doesn’t really kick in until around 900W of total load, and even then it never becomes intrusive, likely drown out in the real world by several quality chassis fans.

We hope Corsair release more of this digital range in the coming months, because while the AX1200i is a powerhouse supply, at £260 inc vat it will be priced outside the budget confines for 95% of the enthusiast audience.


  • Technically very proficient.
  • No regulation weaknesses.
  • quiet.
  • beautifully finished.
  • excellent bundle.
  • interactive software suite adds value.
  • full modular design.
  • high grade cabling.
  • 7 year warranty.


  • At this price, it is only for the wealthy enthusiast audience.

Kitguru says: A fantastic power supply from Corsair which cements their position in the high end sector.

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Rating: 9.5.

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