I'm considering to buy a MacBookPro, and I have an option to choose between the  AMD Radeon HD 6490M with 256MB GDDR5 memory, or the  AMD Radeon HD 6750M with 1GB GDDR5 memory.  There is a big price difference, and I know that for gamers, there is a huge difference between these cards.  But what I'm wondering about is if I'll see any performance change when doing realtime graphics in programs like Processing? (or even final cut pro and shake)