The hardware requirements get weirder from there. That feels needlessly restrictive, but Microsoft justifies the limitation as a security precaution, because any system with firmware TPM must implement the 2.0 spec. Atom processors based on Gemini Lake are the oldest low-power processors supported, including the Celeron J4005 from late 2017. The actual published list of supported CPUs starts with 2018's Ryzen 2000 series based on the Zen+ architecture and Intel's 8th-gen Coffee Lake Core CPUs. That's right, Microsoft has cut off support for processors greater than four years old. I went through this experience last night, documenting the fTPM portion for at least some ASUS AMD motherboards. More importantly, the installer from the leaked Windows 11 build will refuse to install. However, we can confirm that if a PC does not have the fTPM enabled, the PC Health Check software will tell you that Windows 11 is not compatible. Windows 11 will refuse to boot on systems without a TPM, which includes firmware TPMs built into recent processors. Windows 11 says this Ryzen 5 5600X does not meet the requirements, but doesn't say why (click for larger). Since those processors don't support TPM 2.0, some pretty recent CPUs have been cut from Microsoft's official supported list. Microsoft only published its vision for TPM 2.0 in October of 2016, far too late to make it into Intel's 7th generation Kaby Lake Core processors and AMD's first Zen CPUs that launched in early 2017. ![]() This technology has been with us for more than 15 years, but more specifically, Windows 11 will require version 2.0 of the TPM spec. The most restrictive requirement appears to be a mandatory Trusted Platform Module (TPM). At first blush, the Windows 11 system requirements calling for a dual-core CPU and 4 GB of system memory doesn't sound like a lot, but once we dug into the nitty-gritty details, it became obvious that Microsoft is cutting ties with some pretty recent hardware. That's the message sent by Microsoft yesterday as the company published system requirements for the upcoming operating system, due during the Holiday season later this year. Windows 11 upgrades may be free, but the hardware is certainly going to cost you.
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