Forget this stuff. The relevant information is the model number.
Without the model numbert, you can estimate the performance from the density (which you didn't post) and the rotational speed but that doesn't tell you a whole lot about the noise.
Here is a link to the 2 drives: http://www.futureshop.ca/catalog/compar ... 2520Drives
I believe these are the names of the drives w the model #s in brackets:
Western Digital Caviar 1TB 3.5" Internal Hard Drive (WD10EADS)
Seagate Barracuda Green 1.5TB 3.5" Internal Hard Drive (ST1500DL003)