case airflow has nothing to do with a "direct touch heatpipe" configuration,.... fin spacing, fin thickness, fan speed, passive, etc would
Low noise with good performance,... the noctua would probably be the best bet out of box, the xiggy and vendetta 2 are both good choices at lower price points (
especially the xiggy) and you can have the fan rev lower via motherboard or controller
Bang for the buck with ok but not best noise out of box,.. Xiggy, then vendetta 2, then noctua
If you add in a retention bracket (which is not needed, it will lower temps a bit 1 - 2 degrees, peace of mind, extra $$$) for the xiggy and vendetta 2,...it will bring the price up a bit
Right now on newegg xiggy is $32 shipped, then $10 rebate
vendetta 2 $50 shipped, then $10 rebate (close to as quiet as noctua, quieter than xiggy)
noctua $60 + shipping (most quiet,..)
bracket is $9 shipped
Just some info,...
review between u12p and vendetta2
http://www.guru3d.com/article/...cooler-roundup-review/
A much better review (in my opinion) of u12p, vendetta2 and xiggy 1283 since it compares with same fan on each to measure ability of heatsink alone.
http://www.madshrimps.be/?acti...tpage=3615&articID=857
and another review based on provided fans, that is between vendetta2, xiggy1283 and a siimilar one, the sunbeam(tuniq) core contact freezer (on guru3d they list is as tuniq)
http://www.frostytech.com/arti...?articleid=2279&page=5
Edit: point of reference as well,.. sunbeam CCF is $40, then $10 rebate, but is noisier which is why I didn't include above,... however you could get a fan to replace included.