Those Corsair are a real letdown I must say.
My OCZ can go upto 1650Mhz @ 7-7-7-18 1T.
And so far I only managed to go up to 1850Mhz @ 8-8-8-18 1T, 1.64v and it seems like I stopped because of my uncore.

Not bad for 1333Mhz Ram