Without the technical data report to you, I can assure you that he gave a second youth has my pc. It largely crushes my old raptor 10,000 rev / min.j've installed Windows 7 64 bit without problem and he never bugged! Performances old pc has evaluated 5.9 and now 7.8. For my setup, this is the hard drive that I lacked (bottleneck). I do not regret my purchase, nor have installed my OS on it. By cons, obviously not made for storage ... Too little memory.