Wow... Someone posted on Claymore thread that following config is getting 60 MHs with Phoenix 4.6c, I have it running for 10 min and it's true. I'm getting 59.7 at 104-110 Watt. I only hope it stays stable without lockup.

-tt 58 -cvddc 750 -cclock 1300 -fanmin 0 -mclock 900 -amd -acm -mi 12 -gt 126 -mode 1 -clKernel 1 -clNew 1 -clf 0 -lidag 1 -openclLocalWork 128 -openclGlobalMultiplier 4096