I was scoring around 5000 with 3dmark 05 with my x1600xt, downloaded cat 6.2 and was consitently getting scores of 5400 stock , with a mild overclock the card scored 5777. After the overclock, i reset back to facory specs however anytime i try to run 3dmark 05 my scores are now at 4400, they should be at 5400, what is going on?