Looking back at this it seems a very low score for a 780.
That's not a bad score... Don't forget the i5 takes a hit doing the physics tests which would bring the average down.
If you look at the detailed scores your physics score was 7465 and mine was 11221 which is the cpu, not that much difference and I'm sure hardly noticeable in the real world !!
Your graphics score was 9230 and mine was 9768 not enough difference for running 2 way 780's !!!
I just downloaded 3dmark I don't want to pay £18 for the advanced edition - Do I need to buy it to run the fire strike test? I want to see were my rig places on the Leaderboards but it wont let me launch the firestrike test?