I'm using a 2x4GB Corsair Dominator GT kit at 2133MHz CL9 - and it works perfectly...
I think, 2400MHz would be too much for that system... I mean, it may handle it, but that depends greatly on the memory controller you get in the CPU... - besides, in gaming I don't think you would see too much difference between 1600-1866-2133-2400MHz...
So, if you're on tight budget, just get a 1600MHz kit... - but double check the QVL... or post the exact models you're looking at and we can check it for you...