Quote Originally Posted by informal View Post
You are wrong.
Look here:
http://blogs.amd.com/work/2010/10/25/the-new-flex-fp/
If we have single threaded fp legacy code,one integer core can schedule instructions on both FMACs.

This means one core can have the whole shared FP resources on its disposal if Core 2 has no fp instructions scheduled in FP scheduler.
Core 1
2x128b AVX or 2x128b un-recompiled SSE
or
128-bit FP command

Only one legacy 128-bit FP FMAC per Thread