The new 15 inch macbook pros came out today and I will be purchasing one, however I do not know if I should get the 1,999$ model or the 2,499$ model. Aside from clock speed (which shouldn't be that big of a difference right?) the main difference between both models is that the one that cost 500$ more has AMD Radeon R9 M370X with 2GB GDDR5 memory. I am not 100% sure what that does (or if it is worth the extra 500$), but I will be using this laptop mainly for programming and video editing. I am leaning more towards saving 500$ since I will not be gaiming much (if at all) on it. I could use some advise, would the AMD Radeon R9 M370X with 2GB GDDR5 memory be worth the extra money? here is a link to the site http://store.apple.com/us/buy-mac/macbook-pro In addition should I upgrade the clock speed? Thank you in advance.