QX9650 and MSI P7N Diamond

Here is what I got:

Intel Core2Extreme QX9650 3 GHz (Currently @ 3.3 GHz)
2x 2 GB DDR2 1066 mushkin (5-5-5-15)
MSI P7N Diamond (nVidia 780i NB Chipset)

When I first built this system is runs unstable at stock speed, lowering the FSB speed and upping the multiplier sorted out that problem, why this is the case I don't know. My problem is though it is overclocked CPU performance seems to be not up to par, it is actually about what it should be if it were running stock. Looking for some tips.

Currently the FSB which stock it is 1333 is set to 1184
Memory speed which should be 1066 is now 1034

I'm sort of a novice to overclocking, I did manage to get it stable, now I'm just looking to get it performing like 3.3 GHz should.