hi ,just adding my 2 cents , the first drive is only 5400rpm so it would be slow ,2nd drive has bad reviews for failure on the link you provided ,the dock i actually have one of those and it works good for data transfer ,that is all i have ever used it for ,its only usb connected so speed would be a factor ,you should connect harddrive to you computer via sata port for best speed .
difference between 64meg and 32 meg cache is 32meg more space for OS to save data to for faster access by your operating system .
difference between green and black drive is green is environmentally friendly ,how that affects the drive I'm not positive ,power consumption is biggest difference i think .
the drives you show are cheap and as always ,you get what you pay for .i have 2 western digital 320 gig drives myself,but just for OS and some storage ,and one is used with the doc for backing up data on customers computer that im fixing .
top 10 drives from pcworld .
Edited by caperjac, 26 November 2010 - 05:30 AM.