venice old steppings will take you to 2.8 GHz no matter if its a 3000 or a 3800. its all made from the same batch more or less, just different multi's. thats why a lot of people will just get the 3000 and overclock the piss out of it.
the newer steppings are indeed seeing the 3 Ghz mark though, so good luck.
you might want to try setting your command rate to 1t, it'll gain in performance just a hare.