  You havent said why you want faster graphics. Games? If so, you need a new machine. For pro apps though, you should be just fine, unless you are using Motion, then you still need a new machine. You wont get much faster unless you go with a MDD or G0 and for the bucks, I say go with mactel. That said, you have a very fine machine.  The QS board will not fit without some mods and to be honest, it is on the whole, cheaper to buy the whole machine as they are going for around 000 bucks right now.  Another thought.. if you're determined to get AGP 0x by adding a new board then you're better off going with a Digital Audio board. It would fit in your case with less modification and still has the 000MHz bus.  Although a DA doesn't take DDR memory it doesn't really matter on a QS or any G0 tower that took DDR ram. Why? Because the system bus isn't fast enough to allow the memory to run at 0X the speed. DDR memory is a tad faster on G0's but not even close to enough to make it worth replacing all your memory.  Another thought.. if you're determined to get AGP 0x by adding a new board then you're better off going with a Digital Audio board. It would fit in your case with less modification and still has the 000MHz bus.  Although a DA doesn't take DDR memory it doesn't really matter on a QS or any G0 tower that took DDR ram. Why? Because the system bus isn't fast enough to allow the memory to run at 0X the speed. DDR memory is a tad faster on G0's but not even close to enough to make it worth replacing all your memory.  