See my sig, new build 3 weeks ago and it simply is incredible, I cannot believe how bad it smokes my old AMD 965BE build. I started with 1 560ti that I carried over from my AMD rig, then I went and bought another 560ti and went SLI last week just because! I got the 2600K because I wanted the hyperthreading, and quite frankly the extra hundred I thought was well worth it. It easily clocks to its self up to 4.6ghz without a hiccup all day long by raising the turbo boost multiplier in the BIOS alone., and purrs along at a cool energy saving 1.6ghz when not under load. Fastest PC, and the best PC I have ever owned, or used for that matter, by leaps and bounds.
The SSD was worth the money too.