The previous engineering samples have had multiple revisions with the clockspeeds bumped with each new version for AMD's Zen-based Ryzen CPU as it's getting closer to its release date. The most recent is reportedly going to hit 4GHz.

According to PCGamesN, the original engineering samples of AMD Zen were noticed carrying an operating frequency of 2.8 GHz with 3.2 GHz turbo clockspeed. In August 2016, AMD showed off its eight-core Zen processor against a Broadwell-E i7 in a Blender demo with its chips that run at 3 GHz during Intel's IDF event in San Francisco.

Moreover, AMD also showcased its eight-core Summit Ridge Ryzen processors with 3.4 GHz clockspeed as well as an unidentified turbo frequency at the New Horizon event on Dec. 13, 2016 and it still managed to keep its strides in renders and game demos with the higher level clockspeed of Intel Broadwell-E chip. At CES 2017 in Las Vegas, AMD also conducted a demo of its third revision (F3) of its flagship Ryzen CPU with 3.6 GHz base clockspeed and can turbo up to 3.9 GHz.

CanardPC, a French hardware magazine reports that there will be a fourth revision (F4) of the Ryzen flagship processor with a little difference in its configuration - a base clockspeed of 3.6 GHz and a turbo frequency of 4 GHz. With these, it appears that AMD has been making quick modifications on its Zen architecture as the launch date of the chips is getting closer.

Howbeit, there is no specific date and time of AMD's Ryzen processor although it might launch at GDC 2017, which will run from Feb. 27 - March 3, according to PC World. Additionally, apart from AMD's demos shown in public in its high-end CPU with 8 cores and 16 threads, the company will likely make the entire chip family available at the release date of Ryzen processor.