Similar Much >_>
http://uk.pcpartpicker.com/user/thebelgiumpope/saved/3Vzk (thebelgiumpop's PCpartpicker)
http://uk.pcpartpicker.com/p/32PaJ (Link posted on this post)
Since you recently built your rig. Only makes sense to get a GPU with it too instead of having such a high end computer yet not being able to play anything without a GPU.
Looks good. I looked up the PSU and it gets good reviews for the price but I cant give you any personal experience from it. Instead of that case you might want to consider something from Fractal Design or Corsair,
I am pretty sure it will fit because no matter if its a reference GPU or other brand card, they should all have generally the same mounting screw areas.
Get the Kraken x40 its Huge!
Well it depends what you are trying to hack. Like Google hires white hat hackers to find flaws in their software. You have to be an expert in the thing you want to hack before you explore the flaws to hack it through.
If you aren't really gaming then the GPU should be fine. Build is overall perfect for your uses. Except that PSU might be too much unless you want to upgrade later on.
In that case there is really no need to upgrade anything if you don't want better GPU performance. The CPU and mobo should be fine and you should just replace the case and PSU.
Because you don't want a better GPU and there's no reason to upgrade your CPU and Mobo if your current one isn't bottle necking your GPU.