Windows 11 has a few different requirements to run than Windows 10, some of these have been slightly ‘controversial’ to say the least.
Lets look at these
|Processor||A compatible 64-bit processor (x86-64 or ARM64) with at least 1 GHz clock rate and at least 2 cores|
|Memory (RAM)||At least 4 GB|
|Storage space||At least 64 GB|
|Security||Secure Boot, enabled by default|
|Trusted Platform Module (TPM) version 2.0|
|Graphics card||Compatible with DirectX 12 or later with WDDM 2.0 driver|
|Display||High definition (720p) display that is greater than 9″ diagonally, 8 bits per color channel|
|Internet connection and Microsoft accounts||Internet connection and Microsoft account required to complete first-time setup on Windows 11 Home.|
|5G support||5G capable modem|
|Auto HDR||HDR capable monitor|
|Biometric authentication and Windows Hello||Illuminated infrared camera or fingerprint reader|
|BitLocker to Go||USB flash drive (available in Windows 11 Pro and higher editions)|
|Hyper-V||Second Level Address Translation|
|DirectStorage||NVMe Solid-state drive|
|DirectX 12 Ultimate||Available with supported games and graphics cards|
|Spatial sound||Supporting hardware and software|
|Two-factor authentication||Use of PIN, biometric authentication, or a phone with Wi-Fi or Bluetooth capabilities|
|Wi-Fi 6E support||New WLAN IHV hardware and driver, Wi-Fi 6E capable AP/router|
|Windows Projection||Wi-Fi adapter that supports Wi-Fi Direct, WDDM 2.0|
|Android apps support and functionality||At least 8GB of RAM (recommended)
At least 16GB of RAM (optimal functionality)
So the 2 obvious ones are a TPM module and an internet connection to complete the setup
Windows 11 only supports 64-bit systems such as those using an x86-64 or ARM64 processor; IA-32 processors are no longer supported.
This means that Windows 11 is the first ever consumer version of Windows not to support 32-bit processors and 16-bit software.
As of August 2021, the officially supported list of processors includes Intel Core 8th generation and later, AMD Zen+ and later (which include the “AF” revisions of Ryzen 1000 CPUs, which are underclocked versions of Zen+-based Ryzen 2000 parts that supplant Ryzen 1000 parts that could no longer be manufactured due to a change in process), and Qualcomm Snapdragon 850 and later.
The compatibility list includes the Intel Core i7-7820HQ, a seventh-generation processor used by the Surface Studio 2, although only on devices that shipped with DCH-based drivers.
Legacy BIOS is no longer supported; a UEFI system with Secure Boot and a Trusted Platform Module (TPM) 2.0 security coprocessor is now required.
The TPM requirement in particular has led to confusion as many motherboards do not have TPM support, or require a compatible TPM to be physically installed onto the motherboard. Many newer CPUs also include a TPM implemented at the CPU level (with AMD referring to this “fTPM”, and Intel referring to it as “Platform Trust Technology” [PTT]), which might be disabled by default and require changing settings in the computer’s UEFI firmware,[ or an UEFI firmware update that is configured to automatically enable the firmware TPM upon installation.
Devices with unsupported processors are not blocked from installing or running Windows 11; however, a clean install or upgrade using ISO installation media must be performed as Windows Update will not offer an upgrade from Windows 10.
Additionally, users must also accept an on-screen disclaimer stating that they will not be entitled to receive updates, and that damage caused by using Windows 11 on an unsupported configuration are not covered by the manufacturer’s warranty. Some third-party software may refuse to run on unsupported configurations of Windows 11