Which socket heatsink (without fan) is best for video card cooling?

[theplanb]

My aopen pa256 mx2 (original GF2 MX chipset) has a small fan spinning very fast (5000-6000rpm) and making quite annoying noise.
I'm definitley putting a decent heatink on it, but which one? I prolly have to mod it hmm..
I don't want normal chipset, graphic coolers like orbs because they perform very poorly especially without fans, so I wan.. socket heatink..
What are the things I should be aware of.. like.. what kind of sahpe of heatsink are better suited for this purpose?
Here is the pic of the card.
Liniky

 

[FlowerMan]

Try the 55mm Alpha square pin heatsink from www.millisec.com. Should be sufficient, when coupled with ASTE or AATE. A GF2MX doesnt generate much heat when not overclocked anyways.