I processori AMD perdono 15% Prestazioni di gioco con Windows 11, Latenza cache L3 triplicata

Apparentemente, AMD processors officially compatible con Windows 11, exhibit a three-times increase in L3 cache latency with the new operating system. The new operating system is also found to break the “preferred cores” system on AMD processors (UEFI CPPC2), in which the two “best” Core della CPU, which can sustain the highest boost frequencies, are highlighted to the operating system, so most of the light-threaded traffic could be sent to them.

AMD and Microsoft jointly made this discovery, and listed out potential impact on application performance. The increased L3 cache latency affects performance of applications sensitive to memory performance. They also warn of a 10-15% loss in gaming performance. D'altra parte, a dysfunctional “preferred cores” system would mean reduced performance in light-threaded tasks as the OS is unaware which are the processor’s two best cores. Per fortuna, both issues can be fixed via software updates, and AMD is working with Microsoft to push fixes for both issues through Windows Update, in an update rollout scheduled within October 2021.