Who has good configuration for R7 240 4GB with yacminer3.5.0? This miner looks tired of working on N16. 
MSI R7 240 4Gb LP overclocked 1150core 1000mem
L 6 B 3750 R 1200
On dev with mon connected B 3620 R 1500
If some HW decrease R low step
Catalyst 13.12 req
In current N-factor needs 16Mb mem for each raw thread on lookup 1
If lookup 6 16/6=2.66(6)Mb per raw thread, 3750/2.66(6)=1407 raw threds
R 1400 unstable, and I decrease to 1200
R9 270x 2Gb best results L 16 B 1620 R 1600
overclocked 1160core 1500mem
but coins/watts = non profit on 270x