If you plan on using this HDD as the system drive, that is the drive with your operating system installed on it, then you might want to look at the WD Black. If you have a SSD as you system drive and are using the larger HDD as a secondary, it really doesn't matter with performance as much. I am using a WD Green which is nearly silent when it is reading and writing and stops spinning when idle. I have all my games installed on it and performance wise, there is very little difference in load times vs my SSD (samsung 840 on a SATA III Intel port). In some games and apps, though, you might see a slight increase in load times with a faster HDD but nothing dramatic.