As long as the HDD isn't a boot disk, the RMP shouldn't contribute to the speed of the PC. When I open programs or other files on my SSD and my HDD, which 5900rpm, I can't really tell the difference in speed between them. That HDD is really good if you think you need that much space.
Thanks for the replies. Yeah the 2TB is essential. Correct me if I'm wrong but the WD Green at 5900rpm should be just as quick as the Seagate Barracuda 2TB at 7200rpm, which is my other available option in the price range.
This is just what i read so does anyone have any first hand experience to share?