Hi all, I am trying to upgrade the RAM in my early 2009 Mac Mini. The standard memory is PC3-8500. Knowing that you can usually use faster RAM (although at lower clock speed), I saw a deal on PC3-12800 RAM, so I tried to use that. After the installation was completed, upon booting up I got an error of three loud beeps. Apparently, this indicates a RAM issue. So, is my new RAM incompatible with the early 2009 Mac Mini? In my experience, it's okay to use faster clock speed RAM in a slower system. So why isn't it working here? Thanks for any help!