Is this a "green" drive?
I'm hearing that "green" drives are not the best choice for your boot (main) drive due to their slower performance.
No! "Green" drives have adaptive speed control to minimize power consumption. Their max speed is also rather slow. This can be a good thing if you are running a huge disk farm, but do not need super speed, as reducing power consumption also reduces cooling requirements, but green drives are not fast drives. The Seagate Barracuda drives are 7200 RPM drives, so they are quite a bit faster than green drives, or 5400 RPM drives. Only 10,000 RPM Raptor drives are faster, and 15,000 RPM SCSI drives top the list. Of course, SSD (solid state drives) are the fastest, but we are talking about rotating magnetic storage drives here, not SSDs.