The site heard from its sources that the first two quad-core Ryzen processors will be the 1400 and 1200. Both processors are clocked at just 3.2GHz and the difference between the two is that the 1400 has SMT while the 1200 doesn't. These processors do not have a Boost for all four cores, the Boost feature is limited to 3.4GHz for a single core.
Furthermore, the reporter says the only six-core SKU he's seen is the 1600, which also has a base clock that doesn't exceed 3.2GHz. The next wave of Ryzen launches is expected in Q2 2017.
Les fréq. des deux premiers Ryzen 4C (1400 avec SMT, 1200 sans) ne dépassent pas les 3.2G. Pas de boost 4C, seulement 1C (3.4G). C'est peu.— Canard PC Hardware (@CPCHardware) 11 maart 2017