Wow, I haven't logged in to these forums for a long while, but now that I saw your thread, I just had to voice my opinoin
First off - do NOT buy a 1000W PSU, because you DO NOT need it. 650-700W is enough, even for modern graphics cards in SLI/Crossfire.
Don't get the 2600k, get the i5 2500k instead - buying the 2600k is a waste of money for you, since the only real advantage the i7 got over the i5, is Hyper threading, and that will ONLY help you when encoding/rendering movies, rendering 3D images etc (so only applications that can take advantage of HT, and no games do), and has zero impact in games. The i5 is a fantastic CPU, and the perfect choice for gaming.
Also, you really don't need 16Gb of RAM - 8 is the sweet spot, and noticeably cheaper. You will most likely never run out of ram with 8Gb, unless again, you're doing some heavy video editing and 3D modelling etc.
I'd rather recommend a better graphics card, where the money will be best spent - the nVidia GTX680 2GB is the best card you can buy at the moment, and soon there will even be 4GB versions, but you only need that if you're planning on playing on multiple monitors, and using resolution of 2560 and up. Either that, or the Radeon 7970, which is AMD/ATIs best offering, I even heard that it has recieved a price drop recently, so it's not a bad choice either.
So my recomendation would be:
SSD for your OS - 90-120Gb, but remember you don't need to install games on your SSD, as in 9/10 cases, it won't help loading times anyway. Only games that uses streamed, compressed data benefits from it.
650-700W quality PSU
But, at the end of this month/beginning of May, there will be new Intel CPUs coming out, namely Ivy Bridge. Now, the performance difference isn't big, or even worth mentioning (in games anyway), the new CPUs are mostly more efficient (due to their new 22nm manufacturing process) and runs cooler, which is good for overclocking - but if you're not into that, there's not really a need for one.
The i5 is still a fantastic CPU, and the best choice for gamers, and the graphics card is the single most important piece of hardware when it comes to games, so spend your money there. This post has been edited by squared on Tuesday, Apr 17 2012, 07:12