Like most things that come from Mr 83 it's just wrong.Is this really true? XV's FPU is 50% more capable than that of PD/SR?
Bd/pd had 4 fpu pipes all 128bit. 2 pipes did fp /avx, the other two did int style simd xop/mmx.
Later on sr/ex they reduce to 3 pipes that shared both int and fp again all 128bit.