Double your fun if your case allows. http://www.bit-tech.net/news/hardware/2016/04/14/phanteks-power-combo/1
An overcomplicated way of doing something simple. I normally like Phanteks stuff but this is pointless. As someone who ran dual supplies in the late 90's it's not difficult to do. Heck, Coolermaster even supplied a simple cable that does the job free with the original Stacker.
Couldn't you also use this to add a second PSU to your existing one as increased power demands (such as through upgrades) require it? Ie. add another 450W to your existing 450W after overclocking and adding a second GPU? Might be cheaper than swapping out for a 900W unit, for example.
