Originally Posted by Kevin_CL
Yes you can use the 120.4 mount and it would accommodate 120.1 - 120.3 with out interference from the PSU. I'm not 100% about the 140.4 mount I'll get back to you tomorrow morning.
I'd be interested in the distance from the back plate to where the 3rd 140mm fan/420mm rad would end as well. PSU depths are between 140mm and 190mm, and since the 140.4 rad mount has some space on the front and back as well the actual frame being a fairly thick L, there should be enough room to run the cables as well even if you use a 420mm (140.3) rad.
There's a particular 1000w PSU that is 170mm that I was looking at, and I was hoping that the distance between a 420mm rad and the back panel would be at least 180mm or so From the pictures, it looks to be somewhere around 185mm between the back plate and where a 140.3 rad would end. *crosses fingers*