Not that fantastic of a cooler and I wouldn't expect much more than maybe 1-2C at 100% load on high fan speeds over the Evo you currently have.
Is there a particular reason you are downsizing your case, but getting a bigger cooler?
My 500r is too big to fit where I used to keep my old pc. It's currently on the ground and in the way. But also, I just didn't like as much as I thought I would, as far as looks.