Since bronze and silver largely only have one AVX-512 FP unit, running AVX-512 in the L2 license is almost totally pointless: you'd often be better off running

Since bronze and silver largely only have one AVX-512 FP unit, running AVX-512 in the L2 license is almost totally pointless: you'd often be better off running twice as many AVX/AVX2 instructions on the two 256-bit units since you run at a higher frequency and the FLOP/cycle is the same. The exception would be if your kernel can make some good use of other wide instructions such as memory access or shuffles.