Originally Posted by Nitrogannex
I'm also not worried about all that amperage on one rail as My rig uses like 400w tops
This is from Johnnyguru's review on the AX1200
I wanted to take a moment to comment on that single massive 100.4A 12V rail. I've been seeing a backlash against multiple 12V designs, and I feel some comment from me is timely; though I've written about this before. As of right now, this is the largest single 12V design I've tested, with the Silverstone Zeus ZM1200M coming in a close second and Ultra's X4 1200W unit coming in third. I have mixed feelings about this. One one hand, I know why the single 12V rail is there and how it came to be in the marketplace. But on the other hand, it makes me a mite nervous. 100.4A is an awful lot of current. You can melt the insulation on some seriously thick gauge wires with that, never mind the 18-16 gauge wires most power supplies this size use to connect to your computer parts. Direct short circuits shouldn't be too much a problem, but what if something doesn't fail in a direct short? What if something partially fails, starts drawing massive 12V current through three or four small wires, and yet doesn't overdraw that 100.4A rail? There is a risk factor here when you start getting 12V rails this huge, people, whether you're talking about a Corsair, Ultra, PC Power and Cooling, or any other company's single 12V design. It's still a reasonably minor risk on a well built unit like this, but a risk is present nonetheless. My rambling point is this - multiple 12V rails aren't the devil, folks, especially on units that can pull more power out of the wall than your toaster.
Over current protection is only useful to about 550 watts, according to Phaedrus, so something like the HX1000 is ideal for a multi rail.