Windows 11 24H2 Performance Evaluation: Notable Findings and Concerns
In our recent performance experience review, we compared Windows 11 24H2 with the prior version, 23H2. This analysis began with an in-place upgrade, followed by a clean installation to identify any significant differences. While many of our findings revealed only slight variances, some surprising results did emerge.
However, the most concerning discovery came from a report by Borncity, which highlighted a significant performance-inhibiting bug encountered by a user. This issue, if not observed closely, could lead to severe disruptions in system performance.
The user reported this anomaly on an ASRock system equipped with an Intel Ultra 9 285K CPU. The problem manifests when applications are minimized, causing Windows 11 to enter a power-saving mode. In this state, the CPU experiences low usage levels and aggressive downclocking. The issue was verified using both Prime95, a synthetic stress test, and the 7-Zip benchmark, a practical application for file archiving.
Importantly, Microsoft officially lists support for the Intel Ultra 9 285K under the Windows 11 24H2 update, adding weight to the user’s concerns.
The accompanying screenshot from Task Manager demonstrates the stark difference in CPU usage and clock speeds when applications are minimized versus when they are actively in use. As evidenced in the image, significantly higher clock speeds and utilization occur when the application is focused, with no signs of throttle.
Interestingly, the affected user noted that similar performance issues were not observed on other processors, such as the Intel i9-12900K and AMD’s Ryzen 9 9950X. Nevertheless, it’s worth noting that the Ryzen chipset is currently absent from Microsoft’s 24H2 support list. This discrepancy might explain why our testing, which utilized the 14th Gen Intel 14700K with similar architecture to the 12900K, did not reveal such a bug.
This is not the first instance of reports regarding Windows 11 degrading device performance. In September, concerns arose regarding inconsistencies in the operating system’s performance metrics, which may add further credence to these latest findings.
These issues provoke thought regarding a recent report from PassMark, which indicated a potential slowdown in CPU performance anticipated in 2025. This correlation merits consideration as we analyze the implications of Windows 11’s performance characteristics.
For further details on this issue, you can view the full report and images on Borncity.
Additional source: Neowin
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