Need to make sure this psu will work for my case

[Lethal]

My case is Corsair 300r
PSU is Corsair hx750
http://pcpartpicker.com/p/21psu
any atx motherboard will fit in this case with this psu right? having decided on motherboard yet.

 

[Lethal]

seems like most psu are same width and height but this has alot more length than most and just want to be sure

 

[Lethal]

bump