Help me choose a Northbridge heatsink/fan please!

for my DFI LP DK 790FXB-M2RSH version

I have everything else pretty well covered temp-wise, but was wondering if there are any good aftermarket north bridge coolers that you guys could recommend with air cooling.

I have only really found these:

http://www.newegg.com/Product/Prod [...] 6835116018

http://www.newegg.com/Product/Prod [...] 6835233021 (with an 80mm fan added)

and this ridiculous thing...

http://www.newegg.com/Product/Prod [...] 6835209017

I've seen a few others resembling the xigmatech (i think they were made by thermaltake) and they appeared to be of high quality, but they weren't sold on newegg and were also more expensive.

And I was wondering if they would fit considering this is what the motherboard looks like with the stock heatsink taken off:

http://img5.imageshack.us/img5/2057/img6426.jpg

it doesn't really look like much room >.>

From what I understand, I should use arctic silver 7 adhesive when applying one of these to the motherboard, excluding the antec fan obviously.

If it makes any difference, my case is a Cooler Master HAF 932.

Thanks!

Hmm, I wouldn't be considering replacing it but it I overclock my processor and obviously this produces heat. Right now I'm at about 50 C idle and 60+ at load. I don't think it's a big deal to replace the heatsink because i'm not a (complete) idiot, and i would be very careful when doing so.
Right now my NB frequency is 2000Mhz and I would like it to be ~2400Mhz

Yikes, those are some crazy NB coolers. When I switched the one on one of my older boards (because the stock died) I found it wasn't too hard of a process, but be sure to measure the hole spacing (if there are pushpins) and the clearance around the NB. Also, it helps if you are handy with a dremel or the like, as usually there is usually one stubborn lip that sticks out a little too far.