Cool the i7 Northbridge if extreme OC?

[swoperet]

So..I've decided to OC the i7-920 to 4.0 using the P6T deluxe V2 mobo as reference. I'm going the LCS route, as I've included dual GTX 260 SSC cards in the mix, with 6 gigs of Corsair Dominator memory (1600). I'm sure the northbridge will be stressed with this combo. Should I include a waterblock for the northbridge, leave it alone, or air cool it with a sink and 40mm fan? Also, any worries for southbridge? Thanks for any advice given.

SW

 

[panzerkiller13]

swoperet,I don't really have any really detailed knowledge on OCing, but I have seen when I was looking for motherboards and CPUs I saw a lot of people saying cooling the northbridge can give you pretty impressive OC capabilities. I would look into it,but I wouldn't spend any huge amounts of money on it unless you REALLY research the benefits and can utilize them in your system.