We have currently two review samples from Lenovo’s new ThinkPad T-series in our office, but neither the ThinkPad T14 CPU, nor the ThinkPad T15 CPU, can utilize their Turbo Boosts and only run at the base clock of 1.6 and 1.8 GHz, respectively.

Just arrived, but obviously with software issues: During the pre-measurements of the two new ThinkPad T-series models T14 and T15, we noticed that the Intel processors cannot use their Turbo Boost and only run at the base clock. The Core i5-10210U of the T14 stops at 1.6 GHz, the Core i7-10510U at 1.8 GHz (both single and multi-core, both battery and mains). We checked the BIOS and drivers on both models and they are up to date. Lenovo’s intelligent cooling feature, which was configurable in Lenovo’s Vantage app in the past, is now integrated into the Windows performance slider, so this is not the problem, either. There is also no problem with the factory Windows installation, because one of our review sample was shipped without preloaded Windows.
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https://www.notebookcheck.net/Lenovo-s-new-ThinkPads-T14-T15-without-working-Turbo-Boost.477067.0.html