If you only plan to oc the 2160 to 3.0 ghz (333mhz x9) then the stock heatsink on the gigabite board should be enough as the gigabite board is desined to run at 1333mhz fsb stick.
If you want to feed the procy more FSB than that, say 400 or even more then the gigabite board might have trouble cooling the northbridge. (i read somewhere that the gigabite can handle a 450 max fsb). The 2160 maxes out at about 3.5 ghz (388 x 9), you can go even higher with extreme cooling and voltage, so your board should
be able to go that high without an aftermarket NB cooler. Just make sure you have good airflow.
On the other hand should you desire to really oc the new 333 mhz intel chips you might have a problem. Although basically the same board as the gigabite one the msi board is a lot better for overclocking newer cpu/s and can easily hit 500 mhz.
http://www.anandtech.com/mb/showdoc.aspx?i=3169&p=5
EDIT: long story short, aftermarket NB cooler isn't needed for the sort of oc you have in mind.
If you want to feed the procy more FSB than that, say 400 or even more then the gigabite board might have trouble cooling the northbridge. (i read somewhere that the gigabite can handle a 450 max fsb). The 2160 maxes out at about 3.5 ghz (388 x 9), you can go even higher with extreme cooling and voltage, so your board should
be able to go that high without an aftermarket NB cooler. Just make sure you have good airflow.
On the other hand should you desire to really oc the new 333 mhz intel chips you might have a problem. Although basically the same board as the gigabite one the msi board is a lot better for overclocking newer cpu/s and can easily hit 500 mhz.
http://www.anandtech.com/mb/showdoc.aspx?i=3169&p=5
EDIT: long story short, aftermarket NB cooler isn't needed for the sort of oc you have in mind.
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