You will be so much happier with this build. Your case looks cool but you really should worry about performance with a budget. No one is going to say "Nice looking case you got there." You can impress with how it actually performs. I don't recommend Win 8. Let Microsoft work out all of the quirks, then upgrade later if you want. From your original, it looked like you want to overclock, so I made it possible with the 3570k and Z77 motherboard. If you don't want to OC, then you can save in those two departments. You had a good choice for GPU but I bumped it to a 7870. One thing that I agree with Sumukh is the mouse. I can play any game all day on a three button mouse. Once again, on a budget, go for performance.