I've heard numerous claims of RAM causing your computer to freeze during intensive tasks like games, though I don't have much experience with this kind of stuff
Other suspects include CPU overheating (My A10 gets 50C on idle, an aftermarket heatsink is gonna deliver next week), and the PSU (It's a 500W no-name brand though even then it should be adequate for my system).
My RAM's KINGSTON HyperX Blu 16GB(2x8GB) DDR3 1600MHz, by the way
Right now, I'm just trying to rule out RAM as a possibility. I have a screenshot of my RAM frequencies as well as some other things, let me know if there are any anomalies or if you need additional info.