is needed in helping me choose which iMac to get. My usage is average stuff with little video editing and no intensive programs like games or photoshop and the likes. I love my cube but the 1.2 GHz with a 100 bus speed and FX 5200 graphics card is showing, lol. I've narrowed it down to one of these three iMacs. 24'' glossy widescreen display 1920x1200 resolution 2.8GHz Intel Core 2 Duo Processor (Penryn); 6MB shared L2 cache; 1066MHz frontside bus 2GB of 800MHz DDR2 SDRAM; supports up to 4GB 320GB SATA 7200-rpm hard drive from MacMall or from Apple, the same as above but with the 8800 graphics card. Apple doesn't say if this machine has the 1066MHz bus. or Refurbished iMac 24-inch 2.8GHz Intel Core 2 Extreme 24-inch glossy widescreen display 2GB memory 500GB hard drive 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW) ATI Radeon HD 2600 PRO with 256MB memory I assume this doesn't have the 1066 MHz bus. I'm going to assume that the machines are the same except for the graphics card. But is there really any difference in the bus speeds? thanks all for your help.