https://wccftech.com/amd-ryzen-3-1200-af-12nm-zen-quad-core-cpu-tested-excellent-budget-chip/

AMD's Ryzen 3 1200 CPU recently received a new revision which has been updated to the Zen+ 12nm core architecture known as the Ryzen 3 1200 AF. As initially reported in a previous article, this updated architecture doesn't offer faster clock speeds but instead allows for more stable clocks & a much higher overclock to be applied to this processor and also provides better memory overclock.

The AMD Ryzen 3 1200 AF processor features an upgrade to the12 nm Zen+ architecture. The primary feature of this processor is the higher overclock when compared to the original Ryzen 3 1200. Another feature is the better memory controller which allows for faster memory overclocks.