I dont see any links
the a6 has athlon II cores well mostly the same as athlon II. its 6% faster than athlon II cores. if your not familiar with athlon IIs then I'll just say that the i3 cores are better, a lot better but the a6 comes with better integrated graphics. now in the $600 price range you can get dedicated graphics that are better, most of the time.
if i was in your boat i would get one of thesehttp://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=100006740%204021&IsNodeId=1&bop=And&CompareItemList=32|34-215-161