Windows 11 is the latest and greatest version of Microsoft’s iconic operating system. Released earlier this month, Windows 11 is gradually rolling out as a free upgrade on Windows 10 machines and is also preinstalled on brand new laptops and PCs. Windows 11 is specifically designed to run on newer PCs, so it has some stringent minimum requirements – including the requirement that at least an 8th Gen Intel or AMD Ryzen 2000 chip is required.
So it is surprising this week that a chip that is 15 years old is listed as capable of running Windows 11.
As reported by Windows Latest, Intel’s Pentium 4 661 chip, which was released back in 2006, is listed as a supported Windows 11 CPU. This will be reflected in the PC Health Check app, an official Microsoft tool that allows users to upgrade to Windows 11.
Although they show up as a Windows 11 supported chip, devices using these CPUs still do not meet all requirements as they do not support TPM 2.0 (Trusted Platform Module) and Secure Boot. These are security features built into the hardware that help protect the Windows 11 device from cyber threats.
Given the age of the processors in question, this seems like an oversight by Microsoft that will be fixed soon.
However, some PC fans who use a Pentium 4 661 chip have now managed to bypass the TPM 2.0 and Secure Boot requirements for installing Windows 11.
These users can also get cumulative updates on their PCs.
One of those who managed to get Windows 11 installed on their Pentium 4 PC was Twitter user @ Carlos_SM1995.
The PC user has also published a video on YouTube that shows how fast Windows 11 runs with the 15-year-old processor.
In a Twitter thread that provided more details, Carlos said the reason Windows 11 can run on this old processor is because Microsoft forgot to add the CPU family to the blocked chips list.
On Twitter @ Carlos_SM1995 wrote: “Microsoft seems to have forgotten to add Intel Family 15 (Netburst) to the list of blocked CPUs, which is why it is shown as compatible”.
The Pentium 4 PC that Carlos ran Windows 11 on had a 3.6 GHz processor, 4 GB DDR2 800 RAM, an Nvidia Geforce GT 710 and a 120 GB SSD hard drive.
For comparison: The minimum specifications of Windows 11 require at least a 1 GHz chip with two or more cores on a compatible 64-bit processor or System on a Chip (SoC), 4 GB RAM, 64 GB or more storage device, a graphics card Compatible with DirectX 12 and TPM 2.0 support.