ZenWatt 23.12

This is a new app for changing the power limit of Ryzen mobile CPUs in laptops and Mini-PCs. It is powered by the RyzenAdj utility.

You can use it to:

  • Increase the power limit for better performance
  • Reduce the power limit for better battery life
  • Reduce the thermal limit so that your laptop runs cooler

For example, I have a laptop with a Ryzen 5600H CPU that runs at 45W.

  • Running it at 15W doubles the battery life with nearly 70% of the max performance.
  • Running it at 30W with an 80C limit provides good performance with less heat.

Some benchmarks for Ryzen 5600H:

CPU Power Limit (Watts)CPU Temp Limit (C)Total Power Draw at wall (Watts)Sysbench (single)Sysbench (multi)Total Power Draw at the wall (Watts)Passmark (multi)
190124492,9642801,969
690153,00711,1551,9056,292
1590244,82722,0093,03312,659
3090424,80129,9523,07016,687
4590614,81931,5523,08117,436

Features

  • Change the power limits for mobile Ryzen CPUs between 1 to 55 watts.
  • Change the thermal limits for mobile Ryzen CPUs between 50 to 90 degrees Celcius.
  • Change the CPU governor, scaling frequency, and EPP profile.
  • Benchmark the CPU using Sysbench and Passmark PerformanceTest.

Supported CPUs

  • Ryzen 2000 (Raven Ridge) – 2300U, 2500U, 2700U
  • Ryzen 3000 (Picasso) – 3500U
  • Ryzen 4000 (Renoir) – 4750U, 4800U
  • Ryzen 5000 (Lucienne) – 5500U
  • Ryzen 5000 (Cezanne) – 5600U, 5600H, 5800HS
  • Ryzen 6000 (Rembrandt) – 6800U

List of CPU models supported by RyzenAdj

Purchase

A personal license for ZenWatt is available from the link below. This is a single-user license with perpetual validity and includes future updates.