DDR 3 is dirt cheap now. I started with 8GB, but it is so cheap I decided to buy another 8GB just because.
DX11 Crysis 2 is much more graphically than a console port. It's poorly coded though when it comes to tessellation so it needs more horse power than it should. Why is a rectangular concrete barrier made of that many tessellated polygons? I also doubt anything currently out there is coded for use of all six cores in my processor. For now a quad is enough, but they are there so I activated them.
As for the bashing comment. No one has so far, but I've seen where these kinds of threads can go. Be it Intel, or AMD fanatics, eventually the wrong person finds the thread, and BOOM. As I've already said. I own both an Intel Q6600, and an AMD 960T so I'm not trying to say Intel is bad. To the contrary, 2500K and 2600K processors are definitely better performing overall.
My main point was improving gaming performance on a budget. If you have unlimited funds than by all means, buy the 2600K. I personally don't see a need. I'm not spending 100% to 200% more for 15% to 20% more benchmarking performance when you don't notice much of a difference in real world gaming, but to each his own.
Also I am trying to help the original poster by showing them a cheaper alternative, and reasons why it works.
Good day gentleman!