Evening all, I am looking to upgrade my current Macbook to a new generation Macbook Pro. I am currently using a PC for CAD design and my Mac for graphic design and everyday use. I am going to run boot camp on the new mac to enable the use of both Windows (for CAD) and Mac OS for everything else. My question is whether the single graphics card on the 13" will be sufficient to run large, complex CAD files. The reason I would prefer a 13" Macbook Pro is that I use a large external screen when in the office, therefore do not require the large laptop screen. For travel, the 13" is preferable for obvious reasons. However, when I was speaking to a staff member in the Apple store he suggested the single graphics card on the 13" would not be enough to run complex CAD. Is this the case? It does seem reasonably believable, but seeing as im not too technically minded with these things (just know how to operate the software) I am not sure if he is just saying this to make Apple more money. So, I guess the question is - Would a 13" Macbook Pro running Intel HD Graphics 3000 be sufficient to operate CAD software. What would be the benefit of the 15" running Intel HD Graphics 3000 & AMD Radeon HD 6750M with 1GB GDDR5 All help would be much appreciated.