I just got a new Nvidia GTX 650. The huge downside at this point is that whenever I use the open source driver, the computer is ridiculously slow. Whenever I use the proprietary drivers and restart, the desktop wallpaper will load and nothing more. I've tried restarting unity only to get a continuous rolling error. With the CCSM options, unity is enabled, yet nothing appears. Whenever I'm using proprietary drivers I get a microcode error which happens so quickly that I can't record the number.