Summary: This unit is so quiet, and I have plenty of power left over to add a second graphics card later. Currently running the following: ASUS P8Z77-V LE Plus MB, Intel i5-32570, 16GB DDR3, MSI GTX660 graphics card, Crucial 256GB SSD, Seagate 1TB HDD, GigaByte WiFi/Bluetooth PCIe adapter card, AFT Pro-37U card reader, and ASUS BW-12B1ST Blu-Ray player. And it works beautifully with the UPS, which has Active PFC.
Summary: I have the Antec HCP-1200 running in my Dell XPS 630i. I was running a Seasonic 850 watt in it but was not enough for my SLI setup. Put that in another computer of mine and put in the Antec. Voila, no more problems with games on my overclocked (cpu and gpu) machine. All the cables worked fine except the one running to my CPU which was not long enough and had to use an extension.
Summary: I've chosen this PSU to drive several of my high-end HPC-boxes. I regularly push them well past 1200 watts for sustained periods. I have had nothing but excellent results with these. This build is typical: Lian-Li-A70F i7-920 @ 4.1GHz (20X, 205) Gigabyte X58-UD5 Rev 2.0 (http://www.amazon.com/Gigabyte-LGA1366-CrossFireX-Motherboard-GA-X58A-UD5/dp/B003378K7M) 24GB GSkill @ 1680MHz 3 x EVGA GTX 460/2GB non-SLI 3 x XSPC GTX 460 water blocks Swiftech Apogee XT-2 Swiftech...
Summary: I am so happy that this one works well... I read previous reviews and had mixed feelings about this purchase prior to receiving it, but I was in a jam because my previous power supply (which was 5 yrs old) blew a capacitor. I did my research and I chose this power supply because of Antec's good history and apparent good customer service as it looks as though they read reviews and are responsive.
Summary: Replaced another brands single rail 850w and all my problems were solved. I5 2500k @ 4.3 Noctua 12 Max 64c 8gb DDR3 @ 1648 Asus P8Z68-V PRO GEN3 2 x GTX 260 1 x SSD 3 x HDD 1 x DVD 1 x Blu Ray
Summary: Bought this power supply to power my new rig. Works great so far. I haven't used it extensively since I've been away from my computer for quite some time, but when I have used it it allows for super silent operation and powers everything in my case just fine. The cables that are modular are easy to use and worked well too. Overall if you are looking for a efficient power supply, give this one some consideration.