Im pretty sure that is not me telling him he does not know anything. Now, if he would have said 'there is an unsigned EXE problem that includes Minecraft on Windows 8 that you should be aware of' it would have made more sense. But just saying 'Minecraft does not work' then two posts later 'Minecraft SOMETIMES does not work'.
This is my computer: Computer: MacBook Pro-Latest Generation Storage: 1TB RAM: 16GB Processor: Intel Core i7 Operating System: Max OSX 10.8.2 Display: 1080p Retina Display
WATTABOUT THE MOTHERBOARD?!?!?!?!? Other than that man if you have a bigger budget you should go for a better graphics card. Something along the lines of the GTX 600 series. If you don't want to spend more you could go down to a i5 3570k. Other than that have fun with your build!
another thing, do you need a monitor/screen for this? because the depending on that answer, you are talking easily about the difference of 200 dollars going toward your build or to a screen.
Gigabyte GA-Z77X-UD5H-WB That seams to be a good value one... It is compatible with iIvy Bridge processors (The new intel ones)
http://pcworld.co.nz/pcworld/pcw.nsf/feature/gaming-desktop-shootout-september-2012 Also here are some gaming machines to compare your's with.