Dual core E2 and A4 too less cpu power to go against the likes of Pentium SNB's. The top end quad more or less equal to N970 "Since 2.6max and 1.9base it has to work in between", N970 performance wise was between the i5 480 and i3 380 in most cases.

SNB has the headroom to murder the llano CPU performance wise with a higher clocked dual core SNB unless the efficiency of the CPU has increased.