What's your OS? Which algorithm do you want to mine? Your link mentiones X11 not X13.
My rig with Xubuntu 13.10 64bit, Catalyst 14.6 Beta, SGMiner 5, 8 GB Ram:
R9 290 Scrypt = 905 kHs, 350 Watt
R9 290 X11 = 4600 kHs, 220 Watt
R9 290 X13 = 3500 kHs, 225 Watt
R9 290 X15 = 3000 kHs, 225 Watt