I'm looking for an air cooling solution to help take my DFI P45 JR T2RS to the next level. I'm thinking either adding a little 40mm fan to the stock NB heat sink or replacing it with a better one. Thing is I am limited on space. I can add taller and better copper heat sink to my SB which is burried by my Xfire HD4770s. I have about 5mm space left on the SB for a taller heat sink. Pleast throw some ideas out for me.