OK, I will spell out the logic. For the average user, the increase in performance of going from your standard "fast" HDD (i.e. 7200RPM 1TB HDD, properly optimized, not even talking Velociraptor), is not worth the money unless you've got a lot of it burning a hole in your pocket and have nothing else to upgrade. In the case of the OP, who lists in his sig a Q6600 and 8800GT, I would first upgrade the 8800GT to a 5850 and then the Q6600 to an i5 750 (or similar CPU) before thinking about dropping at least $250 on a decent SSD.