Legit Power Supply Reviews
Corsair AX1200i 1200W Power Supply Review
|Date:||Mon, Aug 06, 2012 - 12:00 AM|
|Written By:||Emmanouil Filladitakis -|
A look inside the AX1200i
Corsair once again opted for a Yate Loon D14BH-12 fan, a model frequently used by many companies. The ball bearing fan has a maximum speed of 2800RPM, which is unlikely to ever reach since, as you will read in the following pages, the thermal control circuit will not even turn on the fan while the unit is lightly loaded.
Now that is a very interesting, non-standard design which you will not see every day. Actually, you will rarely encounter it since it is a Flextronics design, a new company which Corsair approached to design their newest high end units. The quality of the design and assembly is setting new standards; extremely clean, virtually flawless construction and soldering.
Here is a labeled look at the layout of the Corsair AX1200i power supply.
The A/C receptacle is an EMI filter by itself, yet Corsair would not stop at that for their most premium unit and installed much more filtering hardware onto the PCB. The filtering stage consists of six Y capacitors, three X type capacitors, four chokes and a MOV. The AX1200i's transient filtering appears to be well done.
As this is not a standard design, it is difficult for an amateur to recognize where the primary and where the secondary sides are, plus will certainly be confused by all of the vertically placed daughterboards of the unit. It should suffice to mention that the two daughterboards toward the edge of the unit house the DSP and protection circuits, the primary side switching transistors are attached to the black heatsinks and that Corsair went with two Panasonic HD 450V/470uF capacitors, perhaps the best commercial electrolytic capacitors money can currently buy.
Another vertical PCB on the other side of the power supply houses the DC to DC conversion circuits. The secondary capacitors are a mix of Rubycon and Nippon Chemi-Con products. Most of the power distribution takes place directly on the PCB holding the modular connectors, which thick metallic rails transferring the large lines about the plugs.
All of the industrial capacitors used in the AX1200i are Japanese, and are rated to perform normally at temperatures upwards of 105°C. If you are wanting to know more specifics about the components inside this power supply you can check out this blog page where Corsair engineers talk about the internals.
Next Page - Test Setup
Page 1 - Corsair AX1200i Gets Reviewed
Page 2 - Unboxing the power supply
Page 3 - External Design
Page 4 - A look inside the AX1200i
Page 5 - Test Setup
Page 6 - Testing results (Regulation & Ripple)
Page 7 - Testing results (Efficiency, Noise & Thermal)
Page 8 - Corsair AX1200i Power Supply Conclusion