I am not new to Macs, I have built several MacBooks including the one I currently use as my main computer. I have been trying to save for an older iMac (2007 or 2008 generation) for a few months, and I just got enough. So of course I was extremely happy. But then I found the Mac Mini, sure it's cheaper but it doesn't have a screen which I really LOVE on the iMacs. One reason I want a desktop computer is for gaming. Not hardcore but just games like Left 4 Dead, The Sims 3, Call of Duty etc. I have heard many things about the ATI Radeon 2400 HD (iMac's graphics card) and the nVidia GeForce 9400M (Mac Mini's graphics card). I was just wondering which would be better for the type of gaming I would be using. I know the ATI is 128 MB while the nVidia is 256 MB. I thought the nVidia would be better because it was double what the ATI has, but I have read the ATI is actually better. Actually I have heard many stories about either one being better, but wanted to get some advice on here before I made my final decision. Thanks for advice in advance.