GFlops is very sensitive to memory timings. That looks about right for 8-9-8 or slower @ 1600mhz (or maybe 11/12 @ 2000mhz). I'm guessing you have some auto memory timings . Check the memory tab on cpuz (or download cpu tweaker for more detailed readings) to see what your timings are at. Linx is much like SuperPi in terms of tweaking memory - higher memory performance can overcome cpu speed in terms of GFlops.

Can we post i3's here? I only ask as its a bit easy to get 4.5ghz on them - wonder if we need a 5ghz club for 32nm? Seen a fair few 6xx series at 5ghz even on air. A good 5xx series seems to top out at about 4.7-4.8ghz. Mine struggles past 4.5 and needs loads of voltage - guess that makes it about average?