Though I'm close, I'm using 4 different TC's for each card, my setup will be of no use to anyone for 290x, or perhaps one of the 4 might help 1 of 4 people... who knows.
Ye many miners may have to increase system RAM, hoping I can squeeze by with 8GB and 3 GPU; gonna be close if so.
edit: think I'm at 0 HW's!! woot
care to share a pointer or two? i have 16GB RAM on my system with 3 7950s and keep figuring out new ways to BSOD
Sure, still playing but here's where I'm at with 0 HW's and getting 48.8 Kh/s per card. WU showing 125 (3 cards in rig) but not long enough to settle. Vitural RAM set @ default (same as system) 8192mb
For sapphire: 1060-1080 Clock and 1600Mhz RAM
For Powercolor: 1050 Clock and 1500 Mhz RAM
ultracoinminer (pool info) --scrypt-jane --sj-nfmin 4 --sj-nfmax 30 --sj-time 1388361600 --failover-only --thread-concurrency 62720 --intensity 18 --lookup-gap 3 --gpu-powertune 20 --worksize 256 --gpu-dyninterval 5 --no-submit-stale -g 1 --scan-time 1 --expiry 10 --queue 0
Proud to be running -g 1 still

edit: not sure of catalyst / adl / sdk versions; but they're probably 10 months old.