So, your V.Raptor is rating at 2.5 with W7? Mine rates at 5.9. Perhaps the firmware or something is out of date. If there are any updates, you can try to update the firmware. I believe Vista's max rating was 5.9, whole W7's is 7.9. The only way you'll get over 5.9 hard drive wise in W7 is with a SSD.