IMO, the Zipang is a market-leading cooler. The fan is easily replaced, and that will cure its only short coming. The stock 930 rpm fan does a decent job of cooling my hot running Prescott 3.0 GHz P4-530 and I am satisified with this. My single disappointment with Zipang is VRM cooling performance with the stock fan.
However, if I need more cooling I can run a faster fan. I'm completely sold on Zipang, and will continue to use them for client machines with a different fan.
When more high quality 140mm fans become available, the real strength of Zipang will become obvious. The Evercool fluid bearing 140mm fans will be available through my vendor in June. The models range from 600 to 1800 rpm, so one of these Evercool fans will do the job.
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