I see that Lenovo ThinkCentre M78 is certified by Ubuntu, http://www.ubuntu.com/certification/hardware/201212-12227. The processor they tested in certifying was an AMD A6-5400B. However, I would like to get an AMD A8-6500B processor. Should I be confident that Ubuntu would be similarly as stable with the AMD A8-6500B as the certified processor? Thanks in advance.