I'm not really builder, I build cca 1xPC per year (starting in ancient times of 386) and this is first time in my life that I had freeze during POST. I do not want any overclocking (e.g. running 7200 memory on 8000), I want to run only frequencies as written on memory sticks (7200/34 in this case). In my previous Intel (sorry for competition brand usage) build I selected in bios my memory and it runs on 1st attempt, post in cca 5seconds and no problems, all tests have run without errors. This time I decided to switch to AMD because I have observed problems with big/small cores scheduler causing problems/slowdowns. Was thinking that same cores=less problems, unfortunately I was wrong.