If you're looking at spending a bunch of money on a new gaming system, the Core i7-4th-Gen from Intel make a pretty solid backbone. The beauty is that you don't always need a Core i7 to get the job done. With these new Core i5 systems topping out with nice overclocks at 4.4Ghz, it's pretty hard to justify another $150 to get the Core i7 model that - while faster, isn't all that much faster outside of specific benchmarks.
Moving to performance the overclock applied by Chillblast was completely stable and overall the performance was good. That overclock takes us closer to the more expensive i7-4770K, though not quite as fast overall and gaming wise we have a system which can play games like Grid 2, Metro etc at 1080 resolution with maximum detail.