What would you be running that needs 1.5 kw?
If you look at my sig, my mobo REQUIRES 645 watts, plus i have 2 opterons, lots of ram, ati x190xtx, and 4 HDs at the moment. I plan on adding another few HDDs to use as a storage server. On top of that, the PSU is supporting not 1, but 2 internal liquid cooling units. Add in 9 fans (yes, its VERY quiet considering), 2 optical drives and you're looking @ pulling some major wattage, even though i'm NOT maxing this beast out.
Idk what wattage I am pulling, but @ max load, its a lot considering.
I doubt you'd ever need more than a galaxy PSU. If I ever max out this beast, I will let u guys know. I believe you can actually get 1100 to 1200 out of this PSU, at least from what I've read.
WHat I'd love to know is this, what are you using your computer for? There's not out that can take advantage of all that. Are you running autoCAD or somethin? Trying to get fast times on seti? :lol: