Legit Reviews updated their Ultra X-Connect X2 550W Power Supply review

Ultra goes on to inform Legit Reviews that we need at least a 45A load on the 3.3V/5V rail if you're going to put as much as a 37A load on the 12V rail. So in other words, Ultra said their power supply might actually perform better with four hard drives hooked up to it than it would with just one. Since we tested with only one hard drive this could be the case and since Ultra was concerned with our findings we went back to the test bench and installed three more Western Digital 250GB hard drives.

Ultra X-Connect X2 550W Power Supply Update