PC Ekspert Forum - View Single Post - AMD Ryzen "ZEN3" (5000 CPU / 5000G APU series) Info thread

The Exiled · 24.11.2020., 13:06

Riječima Ryana Shrouta - još jedna u nizu AMD-ovih prijevara koja dodatno doprinosi nerealnim performansama u aplikacijama koje nemaju veze sa svakodnevnim radom.

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AMD has announced they will be introducing Adaptive Undervolting tools for their precision Boost Overdrive software, available for the latest Ryzen 5000 series CPUs. This feature will be made available come launch of AGESA 1180 on 400-series and 500-series motherboards (estimated availability in early December), and will require a BIOS update to enable at the software level. According to AMD, this tool will dynamically calculate the precise amount of voltage required for a given task, analyzing internal sensors (such as workload, temperature, socket limits) and adapting voltage values on the fly at up to 1000 times a second.

AMD's Adaptive Undervolting will allow users to define their undervolting characteristics by "stages", with each differing stage accounting for 3-5 millivolts, up to a maximum of 30 stages (this means a maximum undervolt up to 90-150 millivolt). AMD says that enabling this feature could lead to up to 2% higher single-thread performance and up to 10% higher multithread performance, as lower temperatures enable the CPU to more aggressively Boost under these conditions. According to AMD, this undervolting technique shows higher gains the higher number of CCDs (and thusly, of cores) that a given CPU has available in silicon.

AMD has also stated that this is going to be applied to all new processors going forward; back-porting of this technology to pre-Ryzen 5000 CPUs isn't possible as it requires engineering optimizations that were introduced specifically with Ryzen 5000.
The Adaptive Undervolting feature will firstly be available via BIOS settings, but AMD plans to bring this feature up to its OS-level Ryzen master utility.

Izvor: AnandTech