They were really nice in their U-variants, quite a bit of a performance uplift vs the 14nm stuff while not too greedy with the juice. The 96EU Xe iGPU also did rather well, considering what iGPUs can do.
Best was their compatibility and the ability to run with pretty much any OS you'd throw at them, none of the E/P core woes that came after.
They were also the first to support hardware control flow integrity with shadow stacks and forward branch control, but unfortuantely the software tools and OS support of CFI wasn' t ready for a long time, still isn't mainstream.