Sad waste of a "K" processor...
It should have "clicked" when you read the reviews, and everyone was utilizing cheap sandy-bridge I5's.
Good luck with that ram speed, 1333 has quickly been left behind. I rarely see a setup with a motherboard as the bottleneck, but I seem to see something new everyday. BTW, that ram you bought is very, very overpriced. A good name brand, with a much higher speed would only be 5-10$ more.
And your GPU leaves a lot to be desired, in fact, your onboard graphics with the 3570K will be better than your 260GTX.http://www.overclock.net/t/1252617/bf3-on-a-gtx-260