I have a socket 478 P4 3.2Ghz with a case with this case:
http://www.newegg.com/Product/Product.asp?Item=N82E16811112087
With a better 12cm fan in the back (I forget name). I have a P4P800 MB, with 2x512 Cosair dual channel ram, and I have this CPU heatsink/fan...