The WD is quieter. I have both hdds and they are very together evry short, but the slightly quieter

I found a german review fot the hdd:


http://www.tech-review.de/include.php?p ... entid=8559


Seems that it is fast (4 5400 u/min) and quiet.

The only thing I can say over TT products is:

Cheap and mostly poor quality.

When you want a very quiet und powerful maschine, its better to buy a rad like the aquacomputer airplex revolution. (finest german engineering)

The BI are optimiized for fans faster than 1000 rpm.

Zalman products arent a good choice for cooling a high end system like this. Its better to buy single components.