Northbridge cooler recommendations?

I don't think 54C is very hot at all for a NB. That's actually quite cool by NB standards AFAIK. But half of what we do for cooling is just for peace of mind. :) I'll make a couple suggestions.

You can get a nice aluminum heatsink with tons of fin area for about $10 (Zalman has some good ones).

Taking my old heatsink off was easier than I thought it'd be. If you remove its mounting hardware and it's stuck to the chipset, don't worry. Just gently twist it back and forth until the hardened thermal compound lets it go. Be sure to clean that crap off and reapply a good thermal compound like AS5 or MX-1. Then follow the directions to put the new HS on there, and finally attach a nice little fan blowing down, and you should be golden.

If you don't have enough fan plugs or something, the Thermalright (Thermaltake?) HR-05 is a gigantic passive NB HS (No fan necessary as long as you got decent case airflow). The kids seem to dig it, but it'll run you more like $30.
 
I have the HR-05 and zip tied an 80mm fan to it cuz its pointing right at my zalman 9700. The air coming off of it and blowing into the 9700 seems generally cool. It is huge though so measure carefully if you plan to use it.
 
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