The codename of the sample suggests it has a 1.5GHz base clock and a 2.2GHz Boost. That seems really low but it's important to remember that engineering samples of the previous-gen EPYC processors showed similar clocks, while final versions had much higher frequencies. Milan is a 7nm+ part and it should deliver an uptick in performance/Watt.
AMD Milan is also known as Genesis (internal codename), is the upcoming Zen3 EPYC series (likely to be called 7xx3), expected in late 2020. AMD has confirmed that the Milan-based EPYC series will ship “late 2020”.
Here we go ????
— ExecutableFix (@ExecuFix) July 5, 2020
AMD Eng Sample: 100-000000114-07_22/15_N
1.5GHz base, 2.2GHz boost. This sample seems to match the 64-core Rome ES' in terms of clockspeed
I don't know how many cores this ES has, but it's finally some Milan info ???? pic.twitter.com/bQX9oVztyn