I found this on the other site. Thanks to Okrasit for working this out.
Patch for AMDRadeonX4100.Kext
Find: 48 B8 02 00 00 00 01 00 00 00 48 89 43 54 C7 43 7C 08 00 00 00
Replace: 48 B8 04 00 00 00 01 00 00 00 48 89 43 54 C7 43 7C 20 00 00 00
Find: 0F 42 C8 89 8B 80 00 00 00 44 88 B3 99 00 00 00 44 88 73 20
Replace: 90 90 90 89 8B 80 00 00 00 44 88 B3 99 00 00 00 44 88 73 20
Find: E8 49 85 FE FF BE 48 01 00 00 4C 89 F7
Replace: E8 73 02 01 00 BE...
Enable all cores R9 Fury cards
Patch for AMDRadeonX4100.Kext
Find: 48 B8 02 00 00 00 01 00 00 00 48 89 43 54 C7 43 7C 08 00 00 00
Replace: 48 B8 04 00 00 00 01 00 00 00 48 89 43 54 C7 43 7C 20 00 00 00
Find: 0F 42 C8 89 8B 80 00 00 00 44 88 B3 99 00 00 00 44 88 73 20
Replace: 90 90 90 89 8B 80 00 00 00 44 88 B3 99 00 00 00 44 88 73 20
Find: E8 49 85 FE FF BE 48 01 00 00 4C 89 F7
Replace: E8 73 02 01 00 BE...
Enable all cores R9 Fury cards