My Setup for beginning:
ASRock MB-970EX4 w/ cheap AMD CPU
A bit of Ram like 4 or 8Gigabyte
2x or 3x ATI 7770 or something else.
Could someone say me if this would be profitable?
Cheers!
I would recommend a couple of ATI 7950s: http://www.amazon.com/Gigabyte-Mini-Displayport-PCI-Express-Graphic-GV-R795WF3-3GD/dp/B007581QHG
Oh, and that's one heck of an overclock to get 250 average out of a 7770. Stock is around 200. (at least that is what I get out of mine with poclbm kernel. I got 150 with phatk).
And, depending on what you pay for electricity, you will be lucky to pay for electricity much less get your investment back.