With Windows 11 now rolling out, one of the conversations around the platform continues to be Trusted Platform Module 2.0 (TPM 2.0). Specifically, that Microsoft is demanding machines have the component to be able to upgrade to Windows 11. Other requirements include a processor Microsoft lists as eligible, 4GB of RAM, and Secure Boot.

One of the controversies around Windows 11 requirements is Microsoft CPU cut off is very strict. Millions of machines cannot upgrade to the platform only because they have a CPU Microsoft deems old or not compatible. That includes one of my laptops that I run through the PC Health Check tool recently.

High-end CPUs such as recent generation Intel and AMD Ryzen 1000 series are shut out. These chips do have Secure Boot and TPM 2.0, so why are they not included in Microsoft’s upgrades? Well, the argument is because they do not support Mode Based Execution Control (MBEC).


Without MBEC, these chips will suffer greater performance dips when running Microsoft’s Virtualization-Based Security (VBS). However, it seems VBS is also causing performance issues on compatible Windows 11 machines/CPUs.


According to UL Benchmarks, there are performance issues caused by VBS, especially for gaming tasks:

“In our testing with pre-release builds of Windows 11, a feature called Virtualization-based Security (VBS) causes performance to drop. VBS is enabled by default after a clean install of Windows 11, but not when upgrading from Windows 10. This means the same system can get different benchmark scores depending on how Windows 11 was installed and whether VBS is enabled or not.”

It is worth remembering Microsoft has said it may take a more relaxed approach to older CPUs. The company may allow some machines to upgrade to Windows 11 and continue supporting them. However, if they ever cause issues, the company will ditch those CPUs.

Tip of the day: Worried about your privacy in Windows 10 or want to keep different PCs linked to your Microsoft account strictly separate? We show you how to adjust your Windows 10 sync settings , including the clipboard, activity history/timeline, and themes.