Don't try to play it with 8 GB RAM. It's a pain in the ass. I don't get, how they can say 8 GB is a recommendation. The loadings took ages. I bought another 8 GB RAM today and with 16 GB it is like 4x faster. I can't understand telling 6 GB is a minimum, it must be hell.
My spec: i7 3770 @ 3.4/3.9 GHz (4 cores), 16 GB RAM, ATI Radeon 7970 @ +15% OCed. Works well now @ high details, but I haven't attend any large battle yet.