My laptop is breaking, and I'm thinking about a new computer. I know enough to say that I want an iMac to fit my needs, but the configuration is where I need help. Usage Games: I pretty much use my computer for low action games like Civilization IV, or at most The Sims 3. Work: I expect to be using my computer for school projects occasionally. (iWork and Office) Media: I'm not a big movie person, but music will be a frequent activity. Other: I might use this computer for photoshop and logic studio. Other: Hacking and modding Size 27" or 20"? what are your thoughts? I like the size and space on a 27", but I hate how everything's so far apart (dock WAYY at the bottom, close button WAYY at the top) Processor The minimum speed is 3.06 GHZ, which is faster than any computer in my house. My question is, should I settle for this already good processor or add $200 and get a better one? Will there be a *noticable* difference? Memory My laptop has 2GB of ram and works fine as far as daily activities go. What's the difference between 2GB and 8GB? how's 4GB? Hard Drive I have 100 GB on my mbp, and I constantly have to delete files. I'm not sure if 500 GB will comfortably fit everything, but 2 TB is out of the question. 500GB or 1TB? Video Card NVIDIA GeForce 9400M, ATI Radeon HD 4670 graphics with 256MB, ATI Radeon HD 4850 graphics with 512MB? What does this mean? I just play the Sims and occasionally watch a movie, what's necessary? What's the difference between NVIDIA and ATI? Price I'm trying to keep it under $2000. Thanks for any help!