I need to buy an Asus motherboard for a new PC. P5K seems to be a good
choice, yet there are so many variations of this motherboard. Some have
small heat sinks, some have elaborate heat sinks. Please give me some
advise on how to narrow things down. Thanks.

i don't think the heatsinc size is the big difference ,a quick look at ASUS and i think the biggest difference is FSB ,amount of ram each will handle and Price ,

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