I have a Giga-byte motherboard and the chipset on it has a small heatsink and a 60mm fan that is terribly loud. I know most motherboards dont have fans on the motherboards, while some do. Is it really necessary to have a fan there? Do you think it would be safe to take that fan off and leave the heatsink, so I can get rid of the really loud noise it makes?

Also, another thing I could do is to take the fan off, and I have a bunch of replacement heatsinks that are the same size as the current one, could I like solder 2 or 3 heatsinks together and then make a bigger heatsink with them, that way more heat would be disappated without the use of a fan?