20″ iMac

• width: 19 `3/8″ but looks 19″
• height: 16 `1/8″ but looks 15 `7/8″
• screen width: 17 `1/8″
• screen height: 10 ¼”
• distance from top to beginning of screen: 1 `1/16″

• 1680 x 1050 native (1.6 ratio)
• 1280 x 800 is slightly fuzzy but pretty good

17″ iMac

• width: 16 ¾” but looks 15 `5/8″
• height: 14 ½” but looks 14 ¼”
• screen width: 14 ½”
• screen height: 9 `5/8″
• distance from top to beginning of screen: 1 `1/16″

• 1440 x 900 native (1.6 ratio) [1440 x 810 would be right ratio]
• 1280 x 800 not available
• 1152 x 720 slightly fuzzy but pretty good

Digital TV resolutions (all at ratio of 1.77):

• 480p: 852 x 480
• 720p: 1280 x 720
• 1080p: 1920 x 1080