The heatpipe is fine as long as you don't plan on any overclocking, cause then you will need fans attached to it.
However if you are running stock and looking for quiet that's a good choice. If you are moding and lookinf for speed lqiuid is always the way to go, the Zalman doesn't compete with that, and costs almost as much. But for a reliable, quiet solution, the Zalmans are great.
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