Late 2009 (I think) iMac 2.8Ghz i7 10GB 1067MHz ATI Radeon HD 4850 512MB I'm a photographer and primarily run the Adobe Lightroom & Photoshop. I also stream Netflix while editing and when I do so, any actions taken in Lightroom or Photoshop causes the video stream to lag. I'd assume it's the 4850 holding me back, but wanted to make sure. Either way, I'm wanting to sell this iMac and upgrade to the newest, but that's a discussion for another thread. Thanks.