However, unlike the T495’s the E495’s is set to 25 W and thus coincides with the processor’s long-term TDP limit. Now let us take a look at the ThinkPad E495.
Only then does this STAPM limit take effect and throttle the CPU to 22 W.
For the T495, this limit is set to 22 W and reached after the fourth run of CineBench R15 multi-thread. Think of this as a big jar that keeps on filling up continuously under load until it reaches its specified limit. This setting is supposed to prevent overly hot surface temperatures. In addition to short- and long-term power consumption AMD processors also use another thermal threshold called STAPM, which stands for “skin temperature aware power management”. This may be due to yet another difference in the TDP configuration. The T495’s Ryzen U ran only at 4x 2.8-2.9 GHz. The Ryzen 5 3500U in aforementioned ThinkPad E495 ran at 4x 3.0-3.1 GHz while transforming 25 W of energy into heat.
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