With the AMD Ryzen 3000 series launching within the next few months, the frequency of leaks is increasing. Today, TUM_APISAK on Twitter revealed details of an early engineering sample.

The sample was a 16-core chip, presumably 32 thread, and clocked at 3.3Ghz with a boost of 4.2Ghz

We already know that AMD will be increasing the core counts of the CPUs, and multiple leaks have revealed the Ryzen 9 3850X and Ryzen 9 3800X chips.

At the very least this leak should help confirm that 16-core mainstream CPUs are on the way.

The leak a few days ago from several eCommerce sites indicated that the Ryzen 9 CPUs would be clocked higher at 3.9 GHz and 4.3 GHz base, with 4.7 GHz and 5.1GHz boost.

As an engineering sample, the clock speeds of this product shouldn't be considered final so it could be that this is lower clocked, however, a 16-core CPU with a 5 GHz boost seemed a bit of a stretch with the previous leak, quite often higher core CPUs have a lower clock due to the TDP requirements. 

However, to play devil's advocate, one of 1st Gen Ryzen's engineering samples had a 2.8GHz base/3.2GHz turbo. The production Ryzen 7 1800X then had a 3.6 GHz base, 4.0 GHz boost. That represents an 800 MHz improvement or increase over the engineering sample's base and boost clocks. So we can still be hopeful for a 4.3Ghz 16-core mainstream CPU. 

AMD is expected to release more information about the Zen 2 architecture at Computex 2019, with recent rumours suggesting that these processors will release in July.