GREAT¡¡¡¡

I have two R9 280X OC DUAL-X at 600 kh/s each

power 1100 w +80 plus

8 GB RAM

 -I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-powertune 20 --gpu-engine 1010  --gpu-memclock 1495  --auto-fan --temp-target 80 --temp-cutoff 90


I am selling it on ebay.

I want to buy  7950 x4

and mount them here
http://i42.tinypic.com/2dgoozd.jpg

I think it will be more efficient in electric costs .