1. I am getting the $799 model since it has a dedicated GPU I intend on playing games. I am kind of disappointed with that it is only 256mb of vRam, I was wondering if I could overclock in Windows? If there are any threads or websites someone could point me too, that would be great! Thanks! 2. Is there hyperthreading on the i5? I want this computer to last me at least four years, so if the i5 doesn't have hyperthreading I will upgrade to the i7. 3. I really don't like going inside the system to do upgrades, so I was wondering if the 750gb hard drive is 7200RPM? I plan on upgrading my RAM later on from OWC, upgrading RAM seems easy, hard drive not soo much I will also be buying the keyboard, magic trackpad, and an older 23" Apple monitor. Thanks!