Is that supposed to be a question? I assume so ... but where's the rest of the question?which proccessor
For the most part yes you are right but there are a select few cases where the 4000 will outpace the 4200 ... hence my comment that the question is incomplete (i.e., better for what)You do know that you have listed 2 single core and 1 dual core processor here.
The 4200+ is dual core, and would be a good choice to pair up with the 7800 series, but then so would the 4000+.