The TOP is a stock overclocked part. It will be slightly faster than the rest. Also, the factory overclocked parts are usually binned as higher quality by the manufacturer (ATI) and are tested to be "better". Not to say the cheaper cards are bad, its just that the higher binned cards are closer to ATI's spec than the rest.
So, main point, get the TOP. Game. Love your computer again.
You are about to answer a thread that has been inactive for more than 6 months. If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.