As the portal writes VideoCardz, in the latest update Coreboot Power consumption limit information has been revealed for Chromebooks for Intel Alder Lake P- and M-series mobile processors.
It is worth recalling that the mobile series of Alder Lake processors is divided into three classes (M, P and S), which in turn are divided into 6 subclasses with different TDP levels. The information found contains information about Alder Lake-M U9 chips with a TDP of 9W and about Alder Lake-P U15 models with a TDP of 15W.
Coreboot data reports consumption patterns for four processor configurations: Alder Lake-P (2 + 8 + 2), Alder Lake-P (4 + 8 + 2), Alder Lake-P (6 + 8 + 2), and Alder Lake- M (2 + 8 + 2). The numbers in brackets mean the number of large high-performance cores, small energy-efficient cores and the level of integrated graphics (in this case, we are talking about the iGPU GT2 with 96 execution units).
It is noted that the PL1 index for Intel Alder Lake P and M are at the same level as that of Tiger Lake H and U, but PL2 for Alder Lake-P processors has become slightly lower – 115 W versus 135 W for Tiger Lake-H …
The table below shows the CPU power limits for standard notebook configurations, one of the columns for the Brya Chromebook reference board, which has slightly lower PL2 and PL4 values. PL4 is the peak processor power level for a maximum of 10 ms.
It should be added that the indicated energy consumption indicators are indicative. Notebook manufacturers will have the right to choose the desired value of CPU power consumption within the declared peak indicator, taking into account the efficiency of the cooling system used and other parameters.
We will remind that earlier it was also reported about the tightening of Intel Alder Lake desktop processors requirements for power supplies due to increased short-term peak consumption.