and that is fine...? still making tons of extra money
Ok, I see what your saying, w/ unlimited power - yeah you could purchase enough hardware for a 100GH GPU farm and be quite profitable for a while. Yeah you can, but expect it to become ur fulltime job for maintenance on the entire farm. You would have to find a place that could take that power draw - standard house wont really do for a massive farm.
Just plug the numbers into a calculator like
http://www.coinish.com/calc/#Which calculate based on a predicted diff increase curve. You can see the hopeful potential profit you can make.
Expect it to take quite sometime to get ROI on the initial investment
Figure you can sell all the parts for about 50-60% of what you bought them for, given they all still work fine =)
I just ran some quick #'s... if 100GH in 7970's cost about 50k USD - and diff & price stayed the same, you would barely / never make ROI, even after selling stuff for 60% initial cost.
Now, you would make ROI if u hoarded the mined coins and hoped they went to insane value someday =)