Benchmarks show that Windows 11 fixes AMD L3 cache bug to optimal performance
Last week, Microsoft launched Windows 11 Insider build, version 22000.282 to the Beta and Release Preview channels to fix AMD L3 cache issues.
The problem is caused by Windows 11, mainly due to some compatibility errors, which lead to an increase in AMD L3 cache access latency and a decrease in performance.
Based on sound consideration, Microsoft is the first to release a fix to the test channel for verification. After the test, there is no problem and it should be pushed to the stable version soon.
The well-known software AIDA64 was tested and verified, and the CPU used was AMD RYZEN 9 PRO 3900 processor based on the ZEN2 architecture.
The test environment is the unaffected Windows 10, the affected Windows 11, and the Windows 11 preview version that has fixed this problem.
On Windows 10, the L3 cache read speed is 1061.81GB/s, write speed is 824.46GB/s, the copy speed is 738.22GB/s, and latency is 10.5 nanoseconds.
On Windows 11, L3 cache read speed is 7624MB/s, write speed is 34471GB/s, the copy speed is 50521GB/s, and latency is 42.9 nanoseconds.
After installing the fix, the L3 cache read speed was 356.9GB/s, the write speed was 789.4GB/s, the copy speed was 739GB/s, and the latency was 10.6 nanoseconds.
From the data point of view, although there are still some differences in the reading speed, the most serious delay problem has been solved, and the delay time after the repair is basically the same as under normal conditions.
AIDA64 said that if users have participated in the Windows Insider Preview program, they can upgrade this version as soon as possible. If they have not participated, it is recommended that users continue to wait for Microsoft’s push.