Hi all,
first thanks for the great info posted here. Now let me tell you of my experience mounting the Zalman NB47J cooler on my a8n-sli mobo (not deluxe).
The first issue was removing the chipset fan. There are two pins that hold the fan in place. I tried pushing them in while lifting. No success. I didn't want to remove my mobo so I tried to cut them of with a small plier. That succeeded eventually, but I still couldnt continue, because I couldn't push in the remaining plastic pins through the holes (they hit the side of my case. So I had to unscrew the mobo and tilt it so that I could cut off those plastic things from underneath. There, finally got off that stupid fan. I stilled had all cables plugged in, didn't nead to remove the mobo entirerly. Note: It's no use unscrewing the four screws on top of the fan, they are only for removing the fan-part from the heatsink. So conclusion 1: You have to unmount your mobo.
Then I remounted the mobo. Unfortunatly I cut my self while doing it, and being pumped up with adrenaline (I always get high mounting computers), I didn't feel a thing. "Hope no blood on the mobo" I thought for myself.
Step 2: Cleaned the surface of the chipset and applied new thermal grease (supplied with the Zalman).
Step 3: Mounted the Zalman. This was the easy part. Just follow the instructions and push in those pins.
Step 4: Started up the computer, entered setup. The mobo temp was 30 degrees, I monitored it for about 30 sec the boom the computer shuts down. Then it goes up, then it shuts down. Then it went up again, then shutting down after 2 sec. Wtf I thought and pulled the plug. It must be blood on the mobo :-(
Unmounted it again and found some blood on top of it and underneath it as well. Cleaned it off with a wet peace of paper, then a dry peace of paper. Remounted it. Come on now computer.... yes it runs! Entered windows and it has been running stable for over an hour now, so hopefully it stable. Asus Probe shows 36 degrees on the mobo which is the same I had with the fan. By the way, I have an Arctic T2 case with 4 chassi fans so I guess the airstream is enough. So I don't need a special fan for the chipset. My other gear is 2 hdds, a leadtek geforce 6600gt extreme.
And now, finally, SILENCE!