In early July released a new MacBook Pro — along with this flagship model laptops first received the Intel Core i9. However, the first tests showed that the effects leave much to be desired — updated the laptops were not able to support maximum performance for a long time. Yesterday Apple released an update, which was designed to eliminate the performance degradation. Let us examine in more detail how it was solved the issue.
According to the reviews that appeared immediately after the start of sales, MacBook Pro Intel Core i9 experienced serious performance issues when used for long periods. The tests showed that the new model is even inferior to its predecessor. This, of course, could not remain without attention. Many users immediately accused chip maker Intel is supposedly in the design of new processors have been serious engineering failures. At the same time, the wave of negativity collapsed and Apple – some have argued that such a slim body is not able to effectively remove the heat, and the cooling system is not able to cope with such a “hot” chip.
However, it was much easier. Apple claims that the problem was solely software. It was caused by incorrect operation of the algorithm responsible for a module VRM, voltage regulator. This module receives from the sensor full information about the need to reduce the clock frequency. In addition, was the wrong set of values at which the chip should go into the “throttle”. For example, at a power of 125 watts, the laptop could work only in Turbo mode, only about 28 seconds. Changing this value to 100 watts, the CPU was stable and did not drop the frequency even under continuous load.
The recently released update fixed the incorrect work of the algorithm. The update is primarily aimed at improving stability of the processor, respectively, to expect any significant increase in performance is not worth it.