I was reading some people who did some tests on this (I can't find it right now).
It suggested that the 8200 and 780G may struggle unless you put in a CPU faster than 2.3GHz dual core.
Well, keep in mind they are clearly talking about AMD dual-core, as that is all that is supported with 780G and 8200. For the currently available Athalon X2s, 2.3GHz is pretty much the lowest speed available! For the currently available Intel, the lowest end non-Celeron is the E2180. While it is only 2 GHz, it is generally faster than a 2.3GHz Athalon X2. So, I stand by my statement -- Modern onboard graphics coupled with just about any dual-core CPU should be enough for 1080P video duties.