I am building a workstation PC and am trying to save as much as possible, My ASUS M5A88-M AM3+ AMD 880G motherboard supports SATA Revision 3 so I also want that performance factor. I am going to have 1 hard drive with 1 TB or greater because of the amounts of data I am going to be working with so that is a must. I found a 1.5TB hard drive but the speed is at 5900 RPM, will that make a significant difference? Please some sort of detail explaining it and/or any alternatives.