Delivery and Specifications

The delivery found with the Corsair AX1200i 1200 Watt is very good. Even a high-end gaming system or an overclocking setup can be wired seamlessly. It's possible to attach three graphics cards to this PSU and up to 16 devices that have SATA power plugs. There is also the possibility to connect two EPS plugs to motherboards that offer this feature. The basis of another very special feature is the Corsair Link adaptor. If you plug one end to the power supply and the other to a USB header on the motherboard you can monitor and manipulate your PSU via Corsairs Link Dashboard software.

 

Corsairs latest AX1200i power supply is being built at Flextronics. It is the same OEM that has already built the predecessor. The biggest innovation with this power supply is that it isn't based on a PFC/PWM controller and a supervisor IC. Instead Corsair uses quite a complex DSP (Digital Signal Processor). This chip constanly gathers data from all the different components, it analyzes the data and then sets the best possible parameters. Compared to a "classical" PFC/PWM/IC design the DSP is much faster and it allows not only higher efficiency but also lower riple.

A closer look at the Corsair AX1200i 1200 Watt's internals shows that there is a server grade EMI input filter. Furthermore there is a X an two Y capacitors as well as a CM choke. Since in a server as well as in a desktop PSU there is a two stage transient filter needed you'll find three more CM chokes, two X capacitors, four Y capacitors and a metal oxide varistorn in the PSUs motherboard.

On the primary side there are two japanese capacitors from Panasonic/Matsushita. Each of them have a capacity of 470 uF at 450 Volt. Corsair put them in parallel and therefore there is a total capacity of 940 uF at 105 °C. On the secondary side there is a mixture of Rubycon and Hippon Chemi-Con 105°C capacitors. In high-end PSUs these days all recifiers first generate +12 Volt voltage. Afterwards +5 Volt and +3.3 Volt are being generated.

On the backside of the doughterboard there are the connectors for the modular cable management. Internally the secondary side of the PSU has been connected to the doughterboard by solderin point. Basically there are almost no cables in the Corsair AX1200i 1200 Watt which allows perfetct air circulation.