Summary: Able to power Intel x4960 cpu + 64GB Ram and 3 Titan GPU's, without fail. Just a great power supply. I sold mine and upgraded to the AX1500i as I wanted to power 4 Titans and didn't want to risk it with only a 1200watt rating.
Summary: The listing says this has "An ultra-quiet double ball-bearing fan" but this has to be one of the most noisy PSU's I've ever owned. The fan spins ALL the time. Yes, its powerful and yes, it's stable so hence the 3 stars but to list this as quiet is just plan wrong.
Summary: Arrived on time and in perfect packaging. Installation was easy and fast, and after a month or so I have had no problems, as I have come to expect from corsair products over the last few years. Yes, it is fairly expensive, but given the quality of the PSU, and the lengthy guarantee attached to it, I think it is worth it.
Summary: I noticed that this PSU makes most of the noise in my PC. Fan always spins ! Why ? And also, why you advertise it as a quiet PSU ? It is not ! Everything is cold and yet PSU fan keeps spinning with no reason. EDIT: Even though this unit is not the most silent in the world and the fan spins unnecessarily, the PC does not make any noticeable noise when closed.
Summary: I was a bit nervous about fitting a PSU. I've never tried it before. My old XFX 750 had just died on me. I live in a remote part of the North and there is no local shop to take my PC to, so thought I'd have a go. I chose this PSU because of the ratings. I liked that it would only take the power that it needed, had surge protection built in, had enough power to more than handle my requirements and had a Gold rating, which means it gives a very high percentage of the power...
Summary: This is a fantastic PSU, fully modular, quiet and well built. However something like this is ONLY needed if you are running something CRAZY, with a lot of fans, a lot of HDDs, watercooling pump and 4x GTX Titans in SLI. When buying a PSU it is best to work out the idle and full load power draw of the system you own/are building and chose a PSU based on that, you want the PSU in maximum efficiency range for where the computer spends most of its time, idle or full load.
An excellent PSU, let down by a noisey cooling fan.
14 May 2013
Summary: I have own the Corsair AX1200 psu, for a few months now. It is an excellent piece of kit, it supplies my PC with all power without problems, the only thing to let it down is the low pitch buzzing sound from the cooling fan. This fan is a Yate Loon 140mm ball bearing fan, which is reputedly cost Corsair $2 per fan, I feel is not up to the quality of the rest of kit.