CPU SIMD can do conditionals and branches in the same way as GPUs, using per-lane conditionals. A modern GPU isn't limited to running one block of code at a ti

CPU SIMD can do conditionals and branches in the same way as GPUs, using per-lane conditionals. A modern GPU isn't limited to running one block of code at a time (on n cores). It will schedule a few different blocks of code independently - up to the number of execution units on the GPU, multiplied by the number of latency-hiding time slots per execution unit.