The only destro I could successfuly install. I have an MSI P55-GD80 socket1153,8GB 1600 MHZ, i5 750 CPU (OC to 4GHZ, and aGTX260, if anyone has a P55 motherboard you can ask and I will post a walkthrough of installation and bios changes I had to do, I assume this will work with anyP55 mobo. some things do not work thou, like MIC and 7.1 channel, time machines. I was able to update to 10.5.8 through software update, I did a complet update to everything, itunes, quicktime etc. then I used the iAKTOS v7 dvd reinstlled drivers andpatches only, and working perfect. this V7 is a well done job.