Nforce 3 chipset heat sink instillation?

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giantjoebot Posted: Tue, Jan 5 2010 6:15 AM

Okay, so I got a nforce 3 board donated to me, and I was fixing it up for this girl I'm dating.  The northbridge fan was noisy, and I had an extra nice little copper replacement.  So I pull off the heat sink, and to my surprise the nforce 3 chip is big, a lot bigger than an nforce 4 chip.  I've dealt with these older, large, motherboard chips before, but I kind of screwed up the last motherboard that I tried replacing the northbridge heat sink on.  I might have been something else that screwed up the board, but I'm still a little freaked out.  I ended up just spreading thermal paste over the chip as evenly as possible, and installing the heatsink.  Everything seems to be working fine, but I'm still a little freaked out.  Anyone have any advice on how to install a heatsink on one of these older, large, motherboard chips?  I tried to google it, but couldn't find much information.

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from what it loos like that's how I would have done it

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Drago replied on Wed, Jan 6 2010 11:25 AM

If your after market sink is bolt through you should be fine, if it is just the plastic push pin with a lil spring, then it is a good idea to leave the mobo horizontal for a few power cycles.  Basically heat that puppy up running OCCT or prime95, let it idle, full load again, then shut it off for a few hours then do the same.  This makes sure the paste cures and that you dont get wierd air pockets if the after market sink weighs more.  Usually for nb chips a non conductive thermal paste like Arctic Silver Ceramic is used so that there are not issues.

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Cool, thanks for the advice guy.  When I installed it, I pushed down with a good amount of force, and turned it back and forth slightly.  I think that really helped, because its really on there now.  The next day I tried to move it like I did when I installed it, and it didn't buge at all.  Its like its suction cupped on there.  I think it will be fine.  Its a little quieter now.

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