Yes it also fits, it's an ATX Power Supply. Just keep in mind that maybe the length of the PSU and the cables may interfere with the optical bays (If the PSU is placed in the top). So don't try to put a long Power Supply in that case.
So only if the PSU is on the top of the tower, then I can't use it in my computer?
Yes you can but if you buy a long PSU (For example 190 mm in length) you may loose an optical bay because the PSU and the cables interfere with it.
I'm just saying you could have clearance problems if you try to fit a long PSU in that case.