at the minute i have an ATI HD 3780, does everything i need it to do, its just starting to get a little bit laggy when playing some games. would it be worth getting a 2nd 3780 from ebay for about £20 and strap it to the existing one, boosting the original one, or should i just scrap the existing one and go for a new 68xx? the budget isnt the issue, the issue is, i dont want to waste the money if i wont see much of a benifit seeing as i dont play many large scale 3D AAA titles.