the dangerden maze 3 with the socket tab hold down works great, that's what I have in my system, got them cause I plan on upgrading in a month or so and all the MB's for AMD's with dual channel ram and nforce 2 chipset don't seem to have mounting holes.
they are really easy to install it too the way they made them, just loosen up two screws, place it over the socket, tighten them up then back off the nuts compressing the springs and you're done
the dangerden geforce waterblock is nice too, however a word of advice if you get it, make sure you get the stainless steel hardware, I forgot to check the box off for it so go the cheapo nylon hardware, I had opened up my case to take some pictures and got them developed, as I was looking at the pictures I noticed the videocards water block didn't look quite right, opens up the case and sure enough one side of the hardware let go and the block was just hanging there, i'm lucky I didn't fry my card, though I think it did do some damage since I can't overclock near what other people are getting out of them even with the stock heatsink and fan.