Was thinking about selling my 6600GT (AGP Ver) to my dad for £40, and putting that cash towards a 6800. Can anyone tell me is this is worthwhile or just a waste of money? Ive seen a POW 6800GS for £160 on ebuyer. Ive heard about unlocking the card to GT spec but ive also heard you have to lucky for all the masked units to work? Is it possible to unlock the pipelines to a full 16 or just pixel and vertex shaders? Pleade note that my 6600GT is at 550/1250 speeds and scoring 53,xxx in aquamark. Thanks