Here is a little side by side comparison, I don't know if this does
much good for you, but I thought I'd throw it out there.
http://www.xbitlabs.com/articles/vid...l-v7350_5.html

Also, here is a FX4500 from newegg.com for one of the lower prices I've
seen:
http://www.newegg.com/Product/Produc...P=OTC-d3alt1me

As for a case, I'm not to knowlegable about server cases, but here is
the case that I would most likely buy if I had a system such as yours.
It comes liquid cooling included, and the entire case itself is a
heatsink, and the 120mm fans add the the quietness of the system all
together. This is a very heavy and solid case.
http://www.newegg.com/Product/Produc...82E16811133171

This second case is quite a bit cheaper, it's probably not going to be
as heavy as the previous one. If you look at the pictures, you see
that the side is equiped with four large case fans along with a large
sleeve that covers the processor and goes straight to the side, which
will help you in cooling.
http://www.newegg.com/Product/Produc...82E16811119103

For powersupply, I would want to get the best out there, your system is
especially demanding, and you want to make sure that it is completely
stable. This powerful powersupply will help you achieve this.
http://www.newegg.com/Product/Produc...82E16817703003

I'm not sure what kind of cooling you are wondering about, but here you
will be able to search through all the different kinds that newegg.com
has available, along with what people have had to say about them.
http://www.newegg.com/ProductSort/Ca...sp?Category=11

Help that helped at all,

Johan