Hey guys, I'm planning on getting an iMac sometime in the next few months. I currently have a low end PC whose specs are: AMD Athlon II X4 2.6 Ghz 2 GB DDR2 RAM Radeon HD 4770 graphics card Really nothing to brag about, but it has given me a few years of great work, and the ability to play games like Mass Effect 3, Modern Warfare 3, FIFA 12 and quite a few other games on medium to high settings. I currently own a 2010 Macbook Air, and I love this little guy so much that I made the decision to get the iMac. I am not buying the iMac for gaming, but for work. My questions to you guys are: A) How big of an upgrade would this be compared to my current system? B) Using the current graphics card on the low end 2011 iMac (I know a newer version of the iMac is due out soon, I'm just using this one as a reference point), which is the AMD Radeon HD 6750M. How does the HD 4770 stack up against the HD 6750M? I am asking because the 4770 does what I need it to do, and I wouldn't want to be downgrading in the graphics card department. Thank you guys for your time!! Any input would be greatly appreciated.