Ubuntu now has higher system hardware requirements than Windows 11

https://documentation.ubuntu.com/release-notes/26.04/

Ubuntu 26.04 LTS release notes

23 April 2026 These release notes cover new features and changes in Ubuntu 26.04 LTS (Resolute Raccoon). Support lifespan: Ubuntu 26.04 LTS is designated as a long-term support release. This means ...

Ubuntu release notes

Some are higher, some are lower.

Windows, https://www.microsoft.com/en-us/windows/windows-11-specifica...

1 gigahertz (GHz) or faster with 2 or more cores, 4 gigabytes RAM, 64 GB or larger storage device, UEFI, Secure Boot capable, (TPM) version 2.0, Windows 11 Pro for personal use and Windows 11 Home require internet connectivity and a Microsoft account during initial device setup.

Ubuntu, this link, https://documentation.ubuntu.com/release-notes/26.04/

2 GHz dual-core processor or better, a minimum of 6GB RAM and 25 GB of free hard drive space. For ISO-based installs, you will need a USB port or DVD drive for the installation media. An internet connection is ... not required for the initial installation.

No requirement listed for UEFI, TPM, or account with a company that the Human Rights Council and others describe as aiding and abetting atrocity crimes.

Windows 11 Specs and System Requirements | Microsoft Windows

View Windows 11 specs, system requirements, and features from Microsoft. Learn about the device specifications, versions, and languages available for Windows 11.

Windows

Do the servers really require 1.5gb? I've always enjoyed using super cheap instances with just 0.5gb of RAM at places like Vultr. I guess the new version won't handle those chores.

RAM is expensive. Didn't they get the memo/invoice?

Very likely, from experience package manager like dnf consumes about 1GB of memory just to fetch package metadata.
"Enterprise Linux 10" based distros by comparison cut out support for a lot of what they consider legacy hardware in current versions. Namely CPU must support x86-64-v3 which means AVX/AVX2 capable CPU only, whereas Windows (Server 2025) is supported, probably FreeBSD as well.