Hi Willhub
I am debating the exact same question at the moment -
http://www.hardwareforums.com/showthread.php?t=7085
The Akasa and Jet 4, I think, will be screemers. Check out their top RPM. 3000 and up can be veryloud. My stock fan speens at 2700-2800 at idle and is very audiable.... :(
When you are getting into 'pipe-towers' you really need to start paying attention to weight. Remember, the mobo is just thin plastic and can only take so much weight, it is not so much a problem in desktops but can be potentialy distructive in towers....
I saw raving reviews about Zalman and there will be an all copper one for the s478. however you really need to visit their site for compatiblity and clearance as the top of the 'crown' is very big and might get too close to the case or the northbridge heatsink. It will all be clearer when you visit the site.
The water thing looks like a mistake as a block is not what the picture is.
But, if you are going to spend the sort of money to buy you a Zalman, why not look at the AC freezer 4 (or is it 7?). I read people's reviews and they would swear by it. I think I saw somewhere a user who is ideling at 25-27C with this baby.... it retails in UK for £15-£20.
Just for comaprison - my 3ghz pressy idels at 45C and 58-59 under presure.
All this with stock cooler. However, even at top temp, the fan does not go over 3100-3200 rpm. Weird isn't it?
You know... I think the best thing to do is to get one of them - all copper blocks and fit a constant rpm 120mm fan on it.
Good luck :good: