The hardcore option (within my ability to conceive of, possibly beyond my ability to execute): https://www.ifixit.com/Answers/View/117066/Can+I+Mod+an+early+20

The hardcore option (within my ability to conceive of, possibly beyond my ability to execute): https://www.ifixit.com/Answers/View/117066/Can+I+Mod+an+early+2009+24%22+iMac+to+external+monitor#answer200166 https://www.ifixit.com/Answers/View/117066/Can+I+Mod+an+earl... This will involve some kind of DisplayPort-to-LVDS board (or HDMI/DVI/VGA-to-LVDS). LVDS is the type of input on LCD panels. If "amazing screen" means retina, one question is whether there is even a board available that can output high enough resolution for good results. This page seems to have good info: https://jared.geek.nz/2015/apr/driving-fpdlink-displays https://jared.geek.nz/2015/apr/driving-fpdlink-displays Anyway, the advantage would be you can plug directly into it and get full performance (no lag, full bandwidth) because you've basically converted it into a monitor.