UPDATE:
2 cards seem to work better in total:
(2xR290)
·
Accepted │············································
Mon Dec 30 15:01:31 2013 Worker 1 hpm 24.456386 wpm 18.919091 A/R/T 10/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:02:08 2013 Worker 0 hpm 17.449997 wpm 18.874486 A/R/T 11/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:02:12 2013 Worker 1 hpm 22.090128 wpm 18.934395 A/R/T 11/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:02:18 2013 Worker 1 hpm 22.316627 wpm 18.935319 A/R/T 12/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:02:21 2013 Worker 0 hpm 18.876240 wpm 18.876240 A/R/T 12/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:02:30 2013 Worker 0 hpm 19.505215 wpm 18.876014 A/R/T 13/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:02:37 2013 Worker 1 hpm 21.380258 wpm 18.936799 A/R/T 13/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:02:56 2013 Worker 1 hpm 20.891281 wpm 18.941428 A/R/T 14/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:03:05 2013 Worker 0 hpm 19.150587 wpm 18.884606 A/R/T 14/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:03:18 2013 Worker 0 hpm 19.643999 wpm 18.888460 A/R/T 15/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:03:30 2013 Worker 0 hpm 19.843978 wpm 18.887642 A/R/T 16/0/0 -> RPC result:│············································
Accepted │············································
Mon Dec 30 15:03:34 2013 Worker 1 hpm 20.134477 wpm 18.950096 A/R/T 15/0/0 -> RPC result:│············································
Accepted