This is my build, after doing some research on all aspects of performance, quality, and cost. I will primarily be using my pc for gaming, mostly World Of Warcraft, but possibly for other online games that are more gpu/cpu dependent. I wanted expandability, reliability, and quality for a minimal cost. Here are my components:
The Intel® Core™ i5-2500K does come with a HSF (heatsink/fan) but if you are going to overclock the processor you are going to want to add a 3rd party HSF for best results. Otherwise everything else in your build looks good. Without a dedicated graphics card you might want to change to a Z68 board to allow on processors graphics or a dedicated video card once you get one. (edited to include info on board)
I knew I would have left out something...For now, I'm going to use the card out of my old system- EVGA GeForce GTX460 SE 1GB GDDR5
My old system was a Dell Dimension E510 Pentium D 3.0 GHZ Windows XP. Although my Dell has been very good to me for the last 6 years, I'm hoping to see a very noticeable improvement from this new build. I have about half the parts already at home, and I will have everything probably within a week, cant wait! I believe the i5 comes with integrated video support, but not sure what that means as I was researching. The video card I'm using will probably be very good compared to my old system, but the card will get upgraded in the coming months, just tight on budget at the moment.
The psu you linked is the same one I purchased and linked in my thread, the case you linked is nice...but very similar to the one I chose. Cases are really about functionality, asthetics come down to personal preference.