thank you for answering ... I have a budget of 3000EUR to start with.
but if I buy all those components the local shop wouldn´t mount it for me and I would need special configuration for mining ... in pc mounting and programming my knowledge is very limited
I'm just make the same steps, as you.
I'm directed to build 2 computers with 2 HD7990 each.
You need only copy my configuration and start, this week i need to fine tuning of components needed.
You need not buy processor and motherboard with case and power supply in internet.
Maby only Radeon HD 7990, becose online they are from 500 euro each, and in your local shop maby from 800 to 1000.
You like this case?
http://ecx.images-amazon.com/images/I/51qMsK0-2hL.jpgYou need noting to programming.