I'm not sure about the sustained transfer speed of the Red Pros at the spindle edge (i.e. the 7.2K drives) vs normal Reds (i.e. the 5.4K drives), but the Reds have a sustained transfer speed of about 230 MBps give or take at the spindle edge. The 7.2K drives probably manage about 20-30 MBps higher, at the cost of more heat.