I'm afraid there is no link, I found the A8G version available at a store near by, having the same price as the O8G . It goes like this (8g<A8G<O8G) so the A8G is a bit oc'd.
here are the specs from the offical web.
https://www.asus.com/Product-Compare/?products=rxhpVSuR74480kni,nrWaZwKol5KpK4Ud
So I don't know if I should just dive in for the A8G or what...