64-bit version of x86 architecture
Factsheet
Named after x86
64-bit computing
64-bit computing
Named after x86
64-bit computing
64-bit computing
Wikipedia
en.wikipedia.org › wiki › X86-64
x86-64 - Wikipedia
2 weeks ago - In 2020, through a collaboration between AMD, Intel, Red Hat, and SUSE, three microarchitecture levels (or feature levels) on top of the x86-64 baseline were defined: x86-64-v2, x86-64-v3, and x86-64-v4. These levels define specific features that can be targeted by programmers to provide ...
Reddit
reddit.com › r/archlinux › x86_64 v3 or v4 support
r/archlinux on Reddit: x86_64 v3 or v4 support
July 10, 2024 -
I am running machine learning workloads on a Threadripper 7000-series CPU. Sometimes I'm CPU-bound, other times GPU-bound, depending on whether I'm doing data generation or model training.
My current distro is built for x86_64 with essentially no extensions, so leaving about 20 years of processor development on the table. I think I could use an extra 10% or whatever of performance when the jobs sometimes run for weeks.
So I'm open to adopting a distro that targets a more recent CPU microarchitecture. I read that Arch merged x86_64 v3 support a little while back, thus my interest.
What is the state of recent microarchitectures on Arch? How would I install an Arch system that was v3 based? Is v4 available yet?
Top answer 1 of 5
38
My current distro is built for x86_64 with essentially no extensions, so leaving about 20 years of processor development on the table. v3 packages will not help you. Every mathematical library and every machine learning application you've ever known already use the most advanced instruction sets available. They do so even when compiled for less capable architectures by detecting support at runtime, and they have done so since the beginning. The only performance to be gained from v3 packages is the optimizations the compiler is able to find through autovectorization in the other parts of the compiled code. You're not leaving "20 years of processor development on the table." It is expected that there is on average something to be gained from v3 packages, but nothing near what you are imagining, and certainly not for your workload.
2 of 5
15
Just add cachy repos. Be prepared for it making fuck all difference tho - bit disappointing. https://wiki.cachyos.org/cachyos_repositories/how_to_add_cachyos_repo/ Adding stuff like AVX512 to the os is useless. It only matters if used in the critical loop of your own simulation code. So it's YOU that would have to recompile your own code, with a different compiler maybe.
Introducing architecture variants: amd64v3 now available in Ubuntu 25.10 Oct 31, 2025
r/Ubuntu 10mo ago
Will future releases require x86_64-v3? - Fedora Discussion
RHEL 10 is planned to require v3 as implied in their blog. Three of my computers have microprocessors that are only v2 compliant but not v3, will future Fedora releases stop working? More on discussion.fedoraproject.org
1
September 13, 2024What's the best way to use fedora making use of x86_64-v3?
RHEL 10 and clones are using an x86_64-v3 baseline, as are CachyOS, PikaOS and some other niche distributions. Between the limited package set of RHEL (partially mediated by EPEL), Fedora ELN not being recommended for production use, and the glibc-hwcaps proposal not getting momentum, is there ... More on discussion.fedoraproject.org
8
0
May 16, 2025Switch from Host to x86-64-v3 | Proxmox Support Forum
The following youtube video suggest that host mode has a performance bottle neck and is slower than if you use x86-64-v3 is this true ... More on forum.proxmox.com
Changing the default x86-64 compilation target to v2 or v3 - compiler - Rust Internals
This should have fewer of the issues that are mentioned about distribution because it's just the default and users can choose to override to an older version if needed. I think x86-64-v3 makes a good target as that's targeting CPUs introduced over 10 years ago and that's similar to changes ... More on internals.rust-lang.org
0
November 21, 202419:07
How AMD Stole Intel’s Future: The Untold x86-64 Story - YouTube
15:12
CPU Micro Architecture Levels Are Not Real - YouTube
10:26
What is x86-64-v3? Understanding the x86-64 microarchitecture levels ...
Is there a Proxmox CPU Bug? Should I use x86-64-v3? : r ...
r/AMD_Stock on Reddit: How AMD Stole Intel’s Future: The Untold ...
Hackaday
hackaday.com › 2024 › 02 › 25 › what-is-x86-64-v3
What Is X86-64-v3? | Hackaday
February 24, 2024 - So, outside of Atom processors, you must have some old hardware to not have the v3 instructions. Some of these instructions are pretty pervasive, so switching at run time doesn’t seem very feasible. We wonder if older processors would trip illegal instruction interrupts for these instructions. If so, you could add emulated versions the same way old CPUs used to emulate math coprocessors if they didn’t have one. Keep in mind that the debate about dropping versions before x86-64-v3 doesn’t mean Linux itself will care.
Red Hat
developers.redhat.com › articles › 2024 › 01 › 02 › exploring-x86-64-v3-red-hat-enterprise-linux-10
Exploring x86-64-v3 for Red Hat Enterprise Linux 10 | Red Hat Developer
April 4, 2024 - Red Hat is considering building Red Hat Enterprise Linux 10 for the x86-64-v3 microarchitecture level.
Arch Linux Forums
bbs.archlinux.org › viewtopic.php
What is the x86-64 microarchitecture level? / Arch Discussion / Arch Linux Forums
The current "baseline" is without any level -- so whatever x86-64 originally specified 20 years ago. The purpose of this RFC (or rather, the implementation that is planned to happen) is to provide v3 for capable HW (mostly the stuff that supports AVX2 instructions) so raises the "CPU bar" to ~2016 for optimized binaries, as well as the normal x86-64 packages that are already provided.
Fedora Discussion
discussion.fedoraproject.org › project discussion
Will future releases require x86_64-v3? - Fedora Discussion
September 13, 2024 - RHEL 10 is planned to require v3 as implied in their blog. Three of my computers have microprocessors that are only v2 compliant but not v3, will future Fedora releases stop working?
openSUSE
en.opensuse.org › X86-64_microarchitecture_levels
X86-64 microarchitecture levels - openSUSE Wiki
In 2020, through a collaboration between AMD, Intel, Red Hat, and SUSE, three microarchitecture levels (or feature levels) on top of the x86-64 baseline were defined: x86-64-v2, x86-64-v3, and x86-64-v4.
GitHub
github.com › HenrikBengtsson › x86-64-level
GitHub - HenrikBengtsson/x86-64-level: x86-64-level - Get the x86-64 Microarchitecture Level on the Current Machine · GitHub
These levels are subsets of each other, i.e. x86-64-v1 ⊂ x86-64-v2 ⊂ x86-64-v3 ⊂ x86-64-v4.
Author: HenrikBengtsson
Fedora Discussion
discussion.fedoraproject.org › ask fedora
What's the best way to use fedora making use of x86_64-v3? - Fedora Discussion
May 16, 2025 - RHEL 10 and clones are using an x86_64-v3 baseline, as are CachyOS, PikaOS and some other niche distributions. Between the limited package set of RHEL (partially mediated by EPEL), Fedora ELN not being recommended for production use, and the glibc-hwcaps proposal not getting momentum, is there any w…
Linux.org
linux.org › home › forums › linux.org news, tutorials and articles › linux original content › linux articles › linux tips
How to Check X86_64 Versions in Linux | Linux.org
February 8, 2025 - To be clear, the SSE3, SSE4.1 and SSE4.2 are all part of x86_64v2. There is also x86_64v3 and x86_64v4. Currently, there is no version 5. x86-64-v3 Version 3 of the instruction set includes bit manipulation and AVX2, MOVBE, FMA.
Gentoo Forums
forums.gentoo.org › board index › assistance › portage & programming
[Gentoo binary host] Benefits of x86-64-v3? - Gentoo Forums
February 4, 2024 - If you processor supports v3, then you could add it in addition to the regular x86-64 binrepo to your configs. Just set the v3 repo priority higher. This way you'll get v3 binaries, but the regular x86-64 repo will be there as backup if some package is missing from v3.
Phoronix
phoronix.com › news › Ubuntu-26.10-amd64v3-Packages
Canonical Experimenting With x86-64-v3 Packages For Ubuntu 26.10 - Phoronix
June 8, 2026 - Canonical engineers are again evaluating the impact of building the Ubuntu Linux archive for the x86-64-v3 "amd64v3" micro-architecture feature level for its performance benefits on modern Intel and AMD systems. An amd64v3 archive is available of Ubuntu 26.10 for testing with the packages targeting this level that allows for AVX/AVX2 and other newer CPU x86_64 ISA capabilities of the past decade.
Proxmox
forum.proxmox.com › home › forums › proxmox virtual environment › proxmox ve: installation and configuration
Switch from Host to x86-64-v3 | Proxmox Support Forum
March 6, 2026 - x86-64-v3 may expose a narrower feature set, so Windows does not auto-enable the same security stack.
The Fedora Project
fedoraproject.org › wiki › Changes › Build_x86-64-v3_Packages
Changes/Build x86-64-v3 Packages - Fedora Project Wiki
April 29, 2026 - Build x86_64_v3 packages in addition to the current x86_64_v1 builds.
Gentoo Linux
gentoo.org › news › 2024 › 02 › 04 › x86-64-v3.html
Gentoo x86-64-v3 binary packages available – Gentoo Linux
April 2, 2024 - The initial package set for amd64 was and is base-line x86-64, i.e., it should work on any 64bit Intel or AMD machine. Now, we are happy to announce that there is also a separate package set using the extended x86-64-v3 ISA (i.e., microarchitecture level) available for the same software.
Rust Internals
internals.rust-lang.org › compiler
Changing the default x86-64 compilation target to v2 or v3 - compiler - Rust Internals
November 21, 2024 - This should have fewer of the issues that are mentioned about distribution because it's just the default and users can choose to override to an older version if needed. I think x86-64-v3 makes a good target as that's targeting CPUs introduced over 10 years ago and that's similar to changes ...
OpenMandriva
forum.openmandriva.org › support
X86-64-v3 packages - Support - OpenMandriva forum
July 23, 2025 - Hello everyone, does openmandriva support x86-64-v3 packages?
Manjaro Linux
forum.manjaro.org › non-technical questions
What is the x86-64 microarchitecture level? - Non-technical Questions - Manjaro Linux Forum
January 9, 2025 - Is Manajaro copying packages from Arch, or rebuilding them? I saw that the Arch RFC-002 “Provide a x86-64-v3 microarchitecture level port” was merged (sorry, this forum forbids me to include links - just google it). In…
Facebook
facebook.com › androidauthority › posts › what-is-x86-64-v3-understanding-the-x86-64-microarchitecture-levels › 794461496051414
What is x86-64-v3? Understanding the ...
Android Authority. 2,173,771 likes · 4,498 talking about this. Android Authority is your source for Android! All the latest news, reviews, opinions, videos, giveaways and more. If you buy our...