Difference Between I386 And I686? - Fedora Forum

Home » Architecture I686 I386 » Difference Between I386 And I686? - Fedora Forum

Maybe your like

FedoraForum.org
  • Sign up
  • Log in
FedoraForum.org - Fedora Support Forums and Community Remember Me?
  • Home
  • Forum
  • Community Lounge
  • Linux Chat
  • difference between i386 and i686?
  • Compartir en Whatsapp
Page 1 of 2 12 Next LastLast
  • Jump to page:
Results 1 to 15 of 20 difference between i386 and i686?
  • Thread Tools
    • Show Printable Version
  • Search Thread
    • Advanced Search
  • Display
    • Linear Mode
    • Switch to Hybrid Mode
    • Switch to Threaded Mode
  1. 8th September 2008, 09:39 PM #1 nAuticA Guest

    difference between i386 and i686?

    i want to know that what is the meaning and difference between i386 and i686 specified at the end of each package..?
    Reply With Quote Reply With Quote
  2. 9th September 2008, 01:22 AM #2 forkbomb's Avatar forkbomb
    • View Profile
    • View Forum Posts
    • Visit Homepage
    forkbomb is offline Registered User Join Date May 2007 Location U.S. Posts 4,851 Mentioned 0 Post(s) Tagged 0 Thread(s)
    Quote Originally Posted by nAuticA i want to know that what is the meaning and difference between i386 and i686 specified at the end of each package..? Compiled for different CPU architectures. i386 should run fine on anything above a 386 processor. i686 is for newer Pentium processors (by new I mean PII and above), but can also be run on newer Intel Core 2 Duos, Athlons, etc. http://www.governmentsecurity.org/archive/t7601.html Theoretically, and by the metrics, i686 should be faster than i386 on a 686-compatible computer, assuming the entire system is compild for i686. But whether it would be enough of a difference to be noticeable to the end user? Well, probably not. EDIT: Just so you know, Fedora is (mostly) compiled to be compatible with i386 even though these days almost all people running Fedora on x86 are on i686 machines. The installer put an i686 kernel on my machine, though. From what I understand the installer is supposed to guess what kernel to install based on detected hardware (IIRC - I remember a bug back awhile where machines with i686-compatible processors were being given the i586 kernel). If you're looking at RPM suffixes, as long as you have a Pentium II or later, packages with i686 in the name should be okay, but picking i386 packages to be on the safe side can't hurt.
    Last edited by forkbomb; 9th September 2008 at 01:28 AM.
    - Tom "What is freedom? To have the will to be responsible for one's self." - Stirner
    Reply With Quote Reply With Quote
  3. 9th September 2008, 01:29 AM #3 briantan
    • View Profile
    • View Forum Posts
    briantan is offline Registered User Join Date Jun 2008 Posts 716 Mentioned 0 Post(s) Tagged 0 Thread(s)
    So far, I don't see any i686 packages for F9. Correct me if I'm wrong: F9 packages come in 3 flavors: x86_64 - AMD64 logo CPUs only i386 - All Intel (Pentium and above, not sure about 386 and 486), AMD, Cyrix and other compatibles. ppc - Apple-IBM-Motorola Power PC cpus. Only G3 and G4 ? (In F8, I can only see glibc.i686 and openssl.i686)
    Reply With Quote Reply With Quote
  4. 9th September 2008, 01:36 AM #4 forkbomb's Avatar forkbomb
    • View Profile
    • View Forum Posts
    • Visit Homepage
    forkbomb is offline Registered User Join Date May 2007 Location U.S. Posts 4,851 Mentioned 0 Post(s) Tagged 0 Thread(s)
    Sounds about right. Then again, running uname -a... Code: Linux emma 2.6.25.14-69.fc8 #1 SMP Mon Aug 4 14:20:24 EDT 2008 i686 i686 i386 GNU/Linux I believe the fact that both i686 and i386 are listed is that the kernel is compiled to be compatible with i386, but optimzed for the i686 extensions. As opposed to a "true" i686 distro (like Arch) which couldn't be deployed on 586 or lower. I think... I seem to remember a big hurrah going on in the Slackware community with a bunch of users loudly demanding that Slack be recompiled for i686 (from i486) because nobody runs i586 or lower processors these days anyway. I don't know about that assertion, but I remember some folks who know more about compiling coming back and saying that the builds on Slackware's install disks and in the mirrors were i486-compatible but i686-optimized. I think Fedora's builds are in a similar boat. EDIT: x86_64 - AMD64 logo CPUs only Logo? Intel Core 2 Duos run x86_64 just fine and I doubt their boxes have an AMD logo on them! Some purists say that calling an Intel processor AMD64 is evil because one should be vendor neutral, but for end-user intents and purposes, both the Intel Core 2s and Athlon X2 64s can run x86_64 just fine (they use the same basic instruction set - which is really a 64-bit extension for x86).
    Last edited by forkbomb; 9th September 2008 at 01:49 AM.
    - Tom "What is freedom? To have the will to be responsible for one's self." - Stirner
    Reply With Quote Reply With Quote
  5. 9th September 2008, 02:04 AM #5 briantan
    • View Profile
    • View Forum Posts
    briantan is offline Registered User Join Date Jun 2008 Posts 716 Mentioned 0 Post(s) Tagged 0 Thread(s)
    What about Intel Core Duos? Run x86_64?
    Reply With Quote Reply With Quote
  6. 9th September 2008, 02:12 AM #6 ozjd's Avatar ozjd
    • View Profile
    • View Forum Posts
    • Visit Homepage
    ozjd is offline Registered User Join Date Feb 2008 Location Sydney Australia Age 70 Posts 2,692 Mentioned 0 Post(s) Tagged 0 Thread(s)
    Quote Originally Posted by tjvanwyk Logo? Intel Core 2 Duos run x86_64 just fine and I doubt their boxes have an AMD logo on them! Some purists say that calling an Intel processor AMD64 is evil because one should be vendor neutral, but for end-user intents and purposes, both the Intel Core 2s and Athlon X2 64s can run x86_64 just fine (they use the same basic instruction set - which is really a 64-bit extension for x86). Actually any EM64T Intel processor (that include many Celeron and P4 chips) can run x64 software even though they aren't true 64 bit processors but the performance improvements are probably not noticeable with the earlier chips.
    Reply With Quote Reply With Quote
  7. 9th September 2008, 02:38 AM #7 joe.pelayo's Avatar joe.pelayo
    • View Profile
    • View Forum Posts
    joe.pelayo is offline An ape descendant Join Date Dec 2006 Location Tlaxcala, México Age 41 Posts 3,181 Mentioned 1 Post(s) Tagged 0 Thread(s)
    Quote Originally Posted by briantan What about Intel Core Duos? Run x86_64? No they don't. I think neither the Core Solos. Thanks. Joe.
    Workstation: EliteDesk AMD Ryzen 5 PRO 2600, 32GB DDR4, 256GB M.2, 480GB SSD, 1TB HDD. Fedora 42.
    Reply With Quote Reply With Quote
  8. 9th September 2008, 02:49 AM #8 forkbomb's Avatar forkbomb
    • View Profile
    • View Forum Posts
    • Visit Homepage
    forkbomb is offline Registered User Join Date May 2007 Location U.S. Posts 4,851 Mentioned 0 Post(s) Tagged 0 Thread(s)
    According to The Wikipedia, no, the Core Duos are not x86_64. http://en.wikipedia.org/wiki/Intel_Core "Core 2" seems to be a designation that means, "this thing is a 64-bit."
    - Tom "What is freedom? To have the will to be responsible for one's self." - Stirner
    Reply With Quote Reply With Quote
  9. 9th September 2008, 03:09 AM #9 ozjd's Avatar ozjd
    • View Profile
    • View Forum Posts
    • Visit Homepage
    ozjd is offline Registered User Join Date Feb 2008 Location Sydney Australia Age 70 Posts 2,692 Mentioned 0 Post(s) Tagged 0 Thread(s)
    Quote Originally Posted by joe.pelayo No they don't. I think neither the Core Solos. Thanks. Joe. Yes they do. We should be careful between what is true 64 bit and what is capable of running 64 bit code. For a more detailed page on Wikipedia see http://en.wikipedia.org/wiki/X86-64.
    Reply With Quote Reply With Quote
  10. 10th September 2008, 11:09 PM #10 Jongi
    • View Profile
    • View Forum Posts
    Jongi is offline Registered User Join Date Oct 2005 Posts 1,952 Mentioned 0 Post(s) Tagged 0 Thread(s)
    I got myself a Core Duo laptop and for a while was surprised why I couldn't get a 64-bit distro to install. No worries abotu it though.
    Desktop (64-bit) - F12, Debian Sid, OpenSUSE 11.2, ArchLinux
    Reply With Quote Reply With Quote
  11. 8th October 2009, 04:58 AM #11 Billfoster
    • View Profile
    • View Forum Posts
    Billfoster is offline Registered User Join Date Jan 2009 Posts 6 Mentioned 0 Post(s) Tagged 0 Thread(s)
    I have to say I too am rather confused about which iso('s) I should download. I find I really Like Fedora: And I missed the DVD with Fedora11 that was on Linux format. None of the DVD's I have downloaded have worked satisfactorily, especially after I put in a GeForce 8600GT PCIExpress16 Graphics card. And the mirrors do not appear to have the i686 versions, which might be why I cannot get the SHA-1 's to agree.
    Reply With Quote Reply With Quote
  12. 9th October 2009, 12:42 AM #12 Billfoster
    • View Profile
    • View Forum Posts
    Billfoster is offline Registered User Join Date Jan 2009 Posts 6 Mentioned 0 Post(s) Tagged 0 Thread(s)
    I think I finally cracked reinstalling Fedora 11: I started with the Net install CD, which installed OK, with the video on the geforce 8600Gt. ~The Fedora 10 DVD from Linux Format only installs with the video on the via chrome motherboard controller. But I still do not know hoe to backup the current setup, so that if I can install the Linux drivers for the N\Vidia 8600Gt, and it does not work, I can at least revert to the situation I have now.
    Reply With Quote Reply With Quote
  13. 9th October 2009, 12:51 AM #13 forkbomb's Avatar forkbomb
    • View Profile
    • View Forum Posts
    • Visit Homepage
    forkbomb is offline Registered User Join Date May 2007 Location U.S. Posts 4,851 Mentioned 0 Post(s) Tagged 0 Thread(s)
    Hi Bill, It may be better to just start up a new thread with your concerns. Your video card concerns really don't have much to do at all with specific architecture compilation tweaks. Don't know what you mean by "The Fedora 10 DVD from Linux format" means. Bottom line is that 10:1 (or more) your home machine is x86 compatible so should be fine with the normal i386 install. Depending on how new the machine is, it might be able to run x86_64 (aka AMD64). But if you got it installed and have less than 3GB of memory or so, stop fretting about the chip architecture stuff.
    Reply With Quote Reply With Quote
  14. 9th October 2009, 08:40 PM #14 Billfoster
    • View Profile
    • View Forum Posts
    Billfoster is offline Registered User Join Date Jan 2009 Posts 6 Mentioned 0 Post(s) Tagged 0 Thread(s)

    Unhappy Fretting Penguin

    Sorry to have combined two separate issues in one post, but the need to reinstall Fedora 11, arose from being unable( having inadequate knowledge to restore the system to state before I "successfully?" installed NVIDIA drivers, resulting in system not going into GUI. Linux Format is a Linux Magazine available in UK, with a"free" DVD with each issue. One DVD I have is the installation DVD for Fedora10, which came with Linux Format magazine. My attempts to download a DVD iso, were unsuccessful in that the resulting DVD's did not work, giving errors( I cannot recall if they were the same errors. First way I found of installing Fedora 11 successfully was to install Fedora10, and use preupgrade to upgrade it to fedora11: longwinded, but it worked. Second better way was to use Netinstall CD, because it resulted in a better configuration of Virtualization, than starting with Fedora11 i686 Live CD; because I obviously lack the skill to correctly install virtualization. My comments about i386 versus i686 are mainly, because I found Fedora's web-site very confusing about what to download: The mirrors (at least in UK have only got 1386) I guess I fret, because, all these downloaded DVD iso's take up a lot of disk space As regards this computer: It has an 1.87 gigahertz Intel Core 2 Duo: Board: ASUSTeK Computer INC. P5VD2-MX SE Rev 1.xx: 2048 Megabytes Installed Memory DISPLAY: NVIDIA GeForce 8600 GT [Display adapter] LGE L1715S [Monitor] (17.1"vis, January 2004) So I cannot think it could possibly run 64bit Linux Checking the Motherboard manual: It cannot take more than 2GB of RAM, otherwise I would have increased the RAM. I will not further comment here about problems trying to install NVIDIA drivers for NVIDIA8600GT video card, except to state that I like Fedora11, especially as its native install virtualization is I find easier to use than Suse11-1's native install virtualization.
    Last edited by Billfoster; 9th October 2009 at 08:45 PM. Reason: small mistakes
    Reply With Quote Reply With Quote
  15. 9th October 2009, 08:57 PM #15 forkbomb's Avatar forkbomb
    • View Profile
    • View Forum Posts
    • Visit Homepage
    forkbomb is offline Registered User Join Date May 2007 Location U.S. Posts 4,851 Mentioned 0 Post(s) Tagged 0 Thread(s)
    Quote Originally Posted by Billfoster ...It has an 1.87 gigahertz Intel Core 2 Duo: ... So I cannot think it could possibly run 64bit Linux As far as I know all members of the Core 2 line are 64-bit capable.
    Reply With Quote Reply With Quote
Page 1 of 2 12 Next LastLast
  • Jump to page:
Quick Navigation Linux Chat Top
  • Site Areas
  • Settings
  • Private Messages
  • Subscriptions
  • Who's Online
  • Search Forums
  • Forums Home
  • Forums
  • FedoraForum & FedoraProject NEWS
    1. News
  • Fedora Resources
    1. Tips About The Forum
    2. Guides & Solutions (Not For Questions)
  • Fedora 43 & 42
    1. Installation, Upgrades and Live Media
    2. Using Fedora
    3. Hardware
    4. Kernel Discussions
    5. Servers & Networking
    6. Security and Privacy
  • Other Versions
    1. Fedora Spins & Remixes
    2. Mac Chat
    3. Rawhide
    4. EOL (End Of Life) Versions
  • Community Lounge
    1. Fedora Focus
    2. Programming & Packaging
    3. Linux Chat
    4. Wibble
    5. Gamers' Lounge
    6. Reviews, Rants & Things That Make You Scream
    7. Suggestions & Feedback
    8. Thank yous, positive feedback and atta-boys
  • Exploring Open Source
    1. Photography, Imaging and Graphics Software
      1. Photography
      2. Graphic Arts
      3. Publication
      4. Animation
    2. Office/Productivity Software
      1. Accounting
      2. Writing software
      3. Fonts
    3. Desktop Environments / Window Managers
    4. Media software
      1. Audio
      2. Video
  • The Dungeon
    1. Archived (Click Header To See Sub-Forums)
      1. F43 Development Forum
      2. F42 Development Forum
      3. F41 Development Forum
      4. F40 Development Forum
      5. F38 Development Forum
      6. F37 Development Forum
      7. F36 Development Forum
      8. F35 Development Forum
      9. F34 Development Forum
      10. F33 Development Forum
      11. F32 Development Forum
      12. F31 Development Forum
      13. F30 Development Forum
      14. F29 Development Forum
      15. F28 Development Forum
      16. F27 Development Forum
      17. F26 Development Forum
      18. F25 Development Forum
      19. F24 Development Forum
      20. F23 Development Forum
      21. F22 Development Forum
      22. F21 Development Forum
      23. F-20 Development Forum
      24. F19 Development
      25. F18 Development
      26. F17 Development Forum
      27. F16 Development
      28. F15 Development
        1. F15 Rants - Talking To The Wind
      29. F14 Development
      30. Fedora 13 Development Branch
      31. Fedora 12 Alpha, Beta & Release Candidates
      32. Alpha, Beta & Snapshots Discussions (Fedora 11 Only)
      33. Alpha, Beta & Snapshots Discussions (Fedora 10 Only)
      34. Alpha - Beta (Fedora 9 Only)
      35. Fedora Core 2 Test Releases
      36. Fedora Core 3 Test Releases
      37. Fedora Core 4 Test
      38. Fedora Core 5 - Dev
      39. Links
      40. Advisories & Updates
      41. Gallery
« Previous Thread | Next Thread »

Similar Threads

  1. What is the difference between i386 and i686
    By vimod.c.nair in forum Hardware Replies: 4 Last Post: 21st May 2009, 10:37 AM
  2. Is preformance difference huge between x86_64 and i386?
    By rnevlin in forum Using Fedora Replies: 3 Last Post: 2nd July 2005, 11:10 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  • BB code is On
  • Smilies are On
  • [IMG] code is On
  • [VIDEO] code is On
  • HTML code is Off

Forum Rules

User Tag List

[[template footer(Guest)]] -- White -- Fedora Blue All times are GMT +1. The time now is 05:01 AM. Powered by vBulletin® Version 4.2.5 Copyright © 2026 vBulletin Solutions Inc. All rights reserved. User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2026 DragonByte Technologies Ltd.Google Authenticator verification provided by Two-Factor Authentication v1.1.0 (Free) - vBulletin Mods & Addons Copyright © 2026 DragonByte Technologies Ltd.

Tag » Architecture I686 I386