asicbeast01 (28mh/s) is running:

11 rigs, each running 3 x 290Xs = 28.05 Mh/s
1 rig, running 1 x 7950, 1 x 7970 = 0.9 Mh/s
Total: 28.95 Mh/s

This should easily hit the 28Mh/s mark, however I've seen it report much lower when using low difficulty coins.  I think this may be the way the LeaseRig proxy is reporting back to LeaseRig.  I've just asked LeaseRig to take a look at this, and let me know why this happens

FYI, asicbeast02 is actually running ASICs.  50 x GridSeed miners.  Originally asicbeast01 was running them, but had to do some reshuffling so if you want asic based miners then check out asicbeast02.

Let me know if you have any other questions!