15h.org - User contributions [en]

Family 15h

2026-05-21T15:19:18Z

Nukem: /* coreboot-15h Compatible Motherboards */ Updated mobo statuses

{{Infobox cpu family
|image = E422-opteron-6300-die-shot-16-core.jpg
|image_size = 300
|caption = The die of a 6300-series [[Opteron]], implementing the [[Piledriver]] microarchitecture.
|introduced = October 12, 2011
|processnode = GlobalFoundries 32nm SOI
|uarch1 = [[Bulldozer]]
|uarch2 = [[Piledriver]]
|uarch3 = [[Steamroller]]
|uarch4 = [[Excavator]]
|predecessor = [[Family 10h]]
|successor = Zen
}}

'''Family 15h''' (also known as '''fam15h''', or ambiguously as '''fam15''') is a [[CPU Families Overview|family of AMD microprocessors]] corresponding to the [[Bulldozer]], [[Piledriver]], [[Steamroller]], and [[Excavator]] microarchitectures.

"15h" (15-hexadecimal) is most correctly pronounced as "one-sixteen five", but most people say "fifteen‑aitch".

Like other AMD family names, "15h" is a mostly-arbitrary, somewhat-sequential number, returned by the <code>CPUID</code> instruction. The number 15h corresponds to the value 21, meaning that "Family 21" would also be a valid, if confusing, name for these CPUs. "Family 15" could confusingly refer to the Family 0Fh (K8 CPUs, first released in 2003).

== Overview ==
{| class="wikitable" style="text-align:center;"
|+
!
!Bulldozer
! colspan="3" |Piledriver
! colspan="2" |Steamroller
! colspan="3" |Excavator
|-
!
! colspan="2" |Orochi
!Trinity
!Richland
!Kaveri
!Godavari
!Carrizo
!Bristol Ridge
!Stoney Ridge
|-
|Models
| colspan="2" |00h-0Fh
| colspan="2" |10h-1Fh
| colspan="2" |30h-3Fh
| colspan="2" |60h-6Fh
|70h-7Fh
|-
|Release Date
|2011/10/12
|2012/05/15
|2012/10
|2013/06
|2014/01/14
|2015/05/28
|2015/07/02
|2016/09/05
|2016/09/05
|-
|[[AGESA]]
| colspan="2" |[https://review.coreboot.org/c/coreboot/+/554 Open Source]
| colspan="2" |[http://review.coreboot.org/1155 Open Source]
| colspan="5" |Closed Source
|-
|BKDG
| colspan="2" |[https://15h.org/images/b/be/42301_15h_Mod_00h-0Fh_BKDG.pdf 42301]
| colspan="2" |[https://15h.org/images/4/49/42300_15h_Mod_10h-1Fh_BKDG.pdf 42300]
| colspan="2" |[https://15h.org/images/0/02/49125_15h_Models_30h-3Fh_BKDG.pdf 49125]
| colspan="2" |[https://15h.org/images/3/3f/50742_15h_Models_60h-6Fh_BKDG.pdf 50742]
|[https://15h.org/images/c/c8/55072_AMD_Family_15h_Models_70h-7Fh_BKDG.pdf 55072]
|-
|coreboot
| colspan="2" style="background-color:#AFA" | [[Family_15h#Orochi|Yes]]
| colspan="2" style="background-color:#AFA" | [[Family_15h#Trinity_and_Richland|Yes]]
| colspan="4" style="background-color:#FAA" | No
| style="background-color:#AFA" | [[Family_15h#Stoney_Ridge|Yes]]
|-
|Microcode ROM
| colspan="9" |Undocumented
|-
|Microcode Patches
| colspan="4" |Encrypted<ref>https://www.dcddcc.com/docs/2014_paper_microcode.pdf</ref>
| colspan="5" |?
|-
|[[PSP]]
| colspan="4" |No
| colspan="2" |Offline
| colspan="3" |Online
|}
''For other CPU families besides Family 15h, see [[CPU Families Overview]]''

== coreboot-15h Compatible Motherboards ==
=== Orochi ===
* Socket [[AM3+]]
** [[H8SML|Supermicro H8SML]] (μ-ATX) — Bronze status
** [[ASUS Sabertooth 990FX R2.0]] (ATX) — Bronze status
** [[ASUS Crosshair V Formula-Z]] (ATX) — Under development, status: in Alpha testing
* Socket [[C32]]
** [[Supermicro H8SCM]] (μ-ATX) — Silver status
** [[ASUS KCMA-D8]] (SSI CEB) — Silver status
* Socket [[G34]]
** [[ASUS KGPE-D16]] (SSI EEB) — Silver status
** [[Supermicro H8QG6]] (SWTX) — Silver status
** [[Supermicro H8SGL]] (ATX) — Bronze status
=== Trinity and Richland ===
* Socket [[FM2]]
** [[F2A85-M|ASUS F2A85-M]] (μ-ATX) - Bronze Status

== Third-party coreboot Support ==
=== Trinity and Richland ===
* Socket [[FS1|FS1r2]]
** [[G505s|Lenovo G505s]] (Laptop, 15.6in)

=== Stoney Ridge ===
* Chromebooks supported by [https://docs.mrchromebox.tech/ MrChromebox].
** Acer Chromebook 315 (CB315-2H)
** HP Chromebook 11A G6 EE
** HP Chromebook 11A G8 EE
** HP Chromebook 14A G5
** Acer Chromebook 311 (C721)
** Acer Chromebook Spin 311 (R721T)
** Lenovo 14e Chromebook (S345)
** Lenovo 100e Chromebook Gen 2 AMD
** Lenovo IdeaPad 3 Chromebook 11AST5
** Lenovo 300e Chromebook Gen 2 AMD
** NEC Chromebook Y1 Gen2A

== Notes and Status ==
* All x86 CPUs include proprietary microcode, in ROM on the CPU itself. Later vendor-provided patches, which update part of this microcode, can be loaded at runtime - these patches are proprietary blobs.
* All Family 15h CPUs are vulnerable to speculative execution exploits if a microcode patch is not loaded.
* Apart from the above, Bulldozer CPUs are generally stable even without microcode patches.
* A microcode patch is strongly recommended for Piledriver CPUs, because of known virtualization-related bugs in their ROM microcode.
* Trinity APUs and Richland APUs additionally require the SMU firmware blob to run. The [[SMU|SMU (System Management Unit)]] is a microcontroller inside AMD SoCs/APUs that handles low-level platform management: power, clocks, voltage, thermal control, power-gating, and related sensors and interrupts. The firmware for this microcontroller is a blob, [https://git.15h.org/mrothfuss/coreboot-15h/src/branch/4.11_branch/src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GnbSmuFirmwareTN.h included as a large array] in the Family 15h [[AGESA]]. Orochi platforms do not require this blob.

== Microcode Patches ==
{| class="wikitable"
|+Below is the list of ucode versions that could be pulled from the container files in the linux kernel
!commit
!comment
!date
!ucode version
!Microarchitecture
|-
|[https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware/+archive/31f6b3076bab3c4b65f67fdb232f4579ed828b4f.tar.gz 31f6b30]
|linux-firmware: Add AMD microcode patch firmware files
|Jul 11 2013
|06000822
|
|-
|[https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware/+archive/8ac569dd3ca3ca685bd47ee86c1eeb6050864db3.tar.gz 8ac569d]
|linux-firmware: Update AMD microcode patch firmware files
|Nov 30 2014
|06000832
|
|-
|[https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware/+archive/5f8ca0c1db6106a2d6d7e85eee778917ff03c3de.tar.gz 5f8ca0c]
|linux-firmware: Update AMD microcode patch firmware
|Mar 18 2016
|0600084f
|
|-
|[https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware/+archive/77101513943ef198e2050667c87abf19e6cbb1d8.tar.gz 7710151]
|linux-firmware: Update AMD cpu microcode
|May 18 2018
|06000852
|Piledriver
|-
|[https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware/+archive/7518922bd5b98b137af7aaf3c836f5a498e91609.tar.gz 7518922]
|Update AMD cpu microcode for family 15h
|May 25 2018
|0600063e
|Bulldozer
|}

== Developer Documentation ==
[[File:Socket G34 pinmap.svg|thumb|G34 socket pinout]]
{| class="wikitable"
|+Below is the documentation for all 15h model revisions
!Model rage
!Date
!Revision
!Link
|-
|00h-0Fh
|September 2014
|3.24
|[https://web.archive.org/web/20220321092743/https://www.amd.com/system/files/TechDocs/48063_15h_Mod_00h-0Fh_Rev_Guide.pdf 48063_15h_Mod_00h-0Fh_Rev_Guide.pdf]
|-
|10h-1Fh
|August 2012
|3.08
|[https://web.archive.org/web/20220129072252/https://www.amd.com/system/files/TechDocs/48931_15h_Mod_10h-1Fh_Rev_Guide.pdf 48931_15h_Mod_10h-1Fh_Rev_Guide.pdf]
|-
|30h-3Fh
|April 2014
|1.06
|[https://web.archive.org/web/20220121164248/https://www.amd.com/system/files/TechDocs/51603_Rev_Guide_15h_Models_30h-3Fh.pdf 51603_Rev_Guide_15h_Models_30h-3Fh.pdf]
|}

== See Also ==

* [[CPU Families Overview]]
* [[AMD Codenames]]
* [[Abbreviations and Acronyms List]]

== References ==

User:Nukem

2026-05-21T14:15:17Z

Nukem: /* Links for my use */

I am a user of several [[K10]] systems, so I came to this Wiki to help out. My account was created on 15 May 2026. I was most active during the first three days, when I made 386 edits.

== 15h.org Wiki Review and Recommendations (2026/05/19 ) ==

Most important and urgent issues:
* Copyright status for the wiki content
** The page for consents is here: [[15h.org talk:Copyrights]]
** DONE: <s>Content license: agreed by me and others as CC‑BY‑SA 4.0 (between 18 and 19 May 2026, in the 15h.org Matrix chatroom<ref>https://matrix.to/#/!OkpUfvLEYpLyALVvaW:dodoid.com?via=matrix.org</ref>)</s>
** DONE: <s>The license should be clearly displayed at the page for Content License</s>
** DONE: <s>A link from every Wiki page (at the page bottom) should point to the Content license</s>
* [[15h.org:Privacy policy|Privacy policy]] page is empty
* Coreboot distributions list on coreboot org should link to our Wiki
** https://www.coreboot.org/end_users.html
* Apparently, "history" is disabled for non-logged users on the entire Wiki.
** It should be enabled to more easily comply with the CC‑BY‑SA 4.0
** There is a problem with scrapers ... so wee need some kind of CAPTCHA challenge to stop them

=== Review: ===
Main problem with the Wiki:

* Many pages that are [[Special:MostLinkedPages|heavily linked to]] do not exist, or have insufficiently detailed content.
* Page categories are completely absent, while the website would obviously significantly benefit from categorizing pages. ([[Special:UncategorizedPages|Uncategorized pages list]])
** Ideas for categories:
*** Motherboards, CPU families, Sockets, Chipsets, Chips, Developer documentation
* Missing links to parent pages: many pages are leaves; users must use the browser back button to navigate out. See "[[Special:DeadendPages|Dead end pages]]"
* Orphaned pages: these pages should be linked better with other pages ([[Special:LonelyPages|list]])
* Leading paragraph templates: many are insufficiently detailed or are missing important items
* Paragraphs are too long on many pages, especially the home page and [[Coreboot-15h]]
* Default font size is 14px. That is way too small. 17px would be much better
* Visually disproportional sizing on images
** the main offender is "[[External Flashing]]" page
*** in most cases, images should be resized so that the text on the images is approximately slightly smaller than the body text
*** This issue may have to wait for the "Default font size" issue to be fixed first
**** Or, set all the image sizes relative to the body text size
* The wiki is supposed to serve two different kinds of users: coreboot-15h developers, and end-users. But the content for them is usually intermixed within a single page.
** the pages should be split into:
*** the pages primarily for coreboot-15h developers
*** the pages primarily for end-users
** Also, see the next item
* Pages are too long.
** Content should not be deleted but split across several pages.
** Replace moved content with short excerpts containing the most important points.
** [[Special:LongPages|List of long pages by size in bytes]]
*** A better metric is the word count, but the list above is easier to generate
*** Pages from 10000 to 20000 bytes are somewhat too long
*** Pages over 20000 bytes are a major issue

* Not enough "Overview" pages
* Missing aggregated lists: not enough lists that group/combine items by useful criteria.

An example of such a badly organized page is this prominent page:
* [[Coreboot-15h]] (permalink: https://15h.org/index.php?title=Coreboot-15h&oldid=2664)
** That page looks so terrible at first sight it probably immediately turns most people off.

Even the main page could be improved, because:

* The text on it is useful but too verbose and should be shortened.
* The motherboard list takes up excessive space.
* The top table is valuable, because it highlights the most useful links, and being first, reduces distraction from the large motherboard list below.

== References ==
<references />

== Links for my use ==
[[User talk:Dodoid]]

[[Special:ListUsers]]

[[Special:WantedPages]]

[[Site History & Milestones]]

[[Coreboot-15h Support Status Scoring]]

https://git.15h.org/mrothfuss/coreboot-15h/issues

User:Nukem

2026-05-21T10:25:01Z

Nukem: /* Links for my use */

2026-05-21T08:28:48Z

Nukem: /* Review: */

I am a user of several [[K10]] systems, so I came to this Wiki to help out. My account was created on 15 May 2026. I was most active during the first three days, when I made 386 edits.

== 15h.org Wiki Review and Recommendations (2026/05/19 ) ==

Most important and urgent issues:
* Copyright status for the wiki content
** The page for consents is here: [[15h.org talk:Copyrights]]
** DONE: <s>Content license: agreed by me and others as CC‑BY‑SA 4.0 (between 18 and 19 May 2026, in the 15h.org Matrix chatroom<ref>https://matrix.to/#/!OkpUfvLEYpLyALVvaW:dodoid.com?via=matrix.org</ref>)</s>
** DONE: <s>The license should be clearly displayed at the page for Content License</s>
** DONE: <s>A link from every Wiki page (at the page bottom) should point to the Content license</s>
* Apparently, "history" is disabled for non-logged users on the entire Wiki.
** It should be enabled to more easily comply with the CC‑BY‑SA 4.0
** There is a problem with scrapers ... so wee need some kind of CAPTCHA challenge to stop them

=== Review: ===
The main problem with the Wiki is badly organized individual pages. Several issues recur, even on prominent pages:

* Page categories are completely absent, while the website would obviously significantly benefit from categorizing pages. ([[Special:UncategorizedPages|Uncategorized pages list]])
** Ideas for categories:
*** Motherboards, CPU families, Sockets, Chipsets, Chips, Developer documentation
* Orphaned pages: these pages should be linked better with other pages ([[Special:LonelyPages|list]])
* Missing links to parent pages: many pages are leaves; users must use the browser back button to navigate out. See "[[Special:DeadendPages|Dead end pages]]"
* Paragraphs are too long.
* Pages are too long.
** Content should not be deleted but split across several pages.
** Replace moved content with short excerpts containing the most important points.
** [[Special:LongPages|List of long pages by size in bytes]]
*** A better metric is the word count, but the list above is easier to generate
*** Pages from 10000 to 20000 bytes are somewhat too long
*** Pages over 20000 bytes are a major issue

*
* Not enough "Overview" pages
* Missing aggregated lists: not enough lists that group/combine items by useful criteria.
*

An example of such a badly organized page is this prominent page:

* [[Coreboot-15h]] (permalink: https://15h.org/index.php?title=Coreboot-15h&oldid=2664)
** That page looks so terrible at first sight it probably immediately turns most people off.

Even the main page could be improved, because:

* The text on it is useful but too verbose and should be shortened.
* The motherboard list takes up excessive space.
* The top table is valuable, because it highlights the most useful links, and being first, reduces distraction from the large motherboard list below.

== References ==
<references />

== Links for my use ==
[[User talk:Dodoid]]

[[Special:ListUsers]]

[[Special:WantedPages]]

User:Nukem

2026-05-21T08:26:44Z

Nukem:

2026-05-20T22:44:02Z

Nukem: Undo revision 2757 by Nukem (talk)

{{Infobox cpu family
|image = E422-opteron-6300-die-shot-16-core.jpg
|image_size = 300
|caption = The die of a 6300-series [[Opteron]], implementing the [[Piledriver]] microarchitecture.
|introduced = October 12, 2011
|processnode = GlobalFoundries 32nm SOI
|uarch1 = [[Bulldozer]]
|uarch2 = [[Piledriver]]
|uarch3 = [[Steamroller]]
|uarch4 = [[Excavator]]
|predecessor = [[Family 10h]]
|successor = Zen
}}

'''Family 15h''' (also known as '''fam15h''', or ambiguously as '''fam15''') is a [[CPU Families Overview|family of AMD microprocessors]] corresponding to the [[Bulldozer]], [[Piledriver]], [[Steamroller]], and [[Excavator]] microarchitectures.

"15h" (15-hexadecimal) is most correctly pronounced as "one-sixteen five", but most people say "fifteen‑aitch".

Like other AMD family names, 15h ("15 hexadecimal") is a mostly-arbitrary, somewhat-sequential (new processor families receive unused higher family numbers) number, returned by the x86 <code>CPUID</code> instruction as a "Family number", and commonly written in hexadecimal. 15 in hexadecimal corresponds to the number 21 in decimal, meaning that while "Family 21" would also be a valid, if confusing, name for these CPUs, "Family 15" could also refer to fam0Fh (K8 CPUs, first released in 2003).

== Overview ==
{| class="wikitable" style="text-align:center;"
|+
!
!Bulldozer
! colspan="3" |Piledriver
! colspan="2" |Steamroller
! colspan="3" |Excavator
|-
!
! colspan="2" |Orochi
!Trinity
!Richland
!Kaveri
!Godavari
!Carrizo
!Bristol Ridge
!Stoney Ridge
|-
|Models
| colspan="2" |00h-0Fh
| colspan="2" |10h-1Fh
| colspan="2" |30h-3Fh
| colspan="2" |60h-6Fh
|70h-7Fh
|-
|Release Date
|2011/10/12
|2012/05/15
|2012/10
|2013/06
|2014/01/14
|2015/05/28
|2015/07/02
|2016/09/05
|2016/09/05
|-
|[[AGESA]]
| colspan="2" |[https://review.coreboot.org/c/coreboot/+/554 Open Source]
| colspan="2" |[http://review.coreboot.org/1155 Open Source]
| colspan="5" |Closed Source
|-
|BKDG
| colspan="2" |[https://15h.org/images/b/be/42301_15h_Mod_00h-0Fh_BKDG.pdf 42301]
| colspan="2" |[https://15h.org/images/4/49/42300_15h_Mod_10h-1Fh_BKDG.pdf 42300]
| colspan="2" |[https://15h.org/images/0/02/49125_15h_Models_30h-3Fh_BKDG.pdf 49125]
| colspan="2" |[https://15h.org/images/3/3f/50742_15h_Models_60h-6Fh_BKDG.pdf 50742]
|[https://15h.org/images/c/c8/55072_AMD_Family_15h_Models_70h-7Fh_BKDG.pdf 55072]
|-
|coreboot
| colspan="2" style="background-color:#AFA" | [[Family_15h#Orochi|Yes]]
| colspan="2" style="background-color:#AFA" | [[Family_15h#Trinity_and_Richland|Yes]]
| colspan="4" style="background-color:#FAA" | No
| style="background-color:#AFA" | [[Family_15h#Stoney_Ridge|Yes]]
|-
|Microcode ROM
| colspan="9" |Undocumented
|-
|Microcode Patches
| colspan="4" |Encrypted
| colspan="5" |?
|-
|[[PSP]]
| colspan="4" |No
| colspan="2" |Offline
| colspan="3" |Online
|}
''For other CPU families besides Family 10h, see [[CPU Families Overview]]''

== coreboot Compatible Motherboards ==
=== Orochi ===
* Socket [[AM3+]]
** [[ASUS Crosshair V Formula-Z]] (ATX)
** [[ASUS Sabertooth 990FX R2.0]] (ATX)
** [[H8SML|Supermicro H8SML]] (μ-ATX)
* Socket [[C32]]
** [[ASUS KCMA-D8]] (SSI CEB)
** [[Supermicro H8SCM]] (μ-ATX)
* Socket [[G34]]
** [[ASUS KGPE-D16]] (SSI EEB)
** [[Supermicro H8SGL]] (ATX)
** [[Supermicro H8QG6]] (SWTX)
=== Trinity and Richland ===
* Socket [[FS1|FS1r2]]
** [[G505s|Lenovo G505s]] (Laptop, 15.6in)
* Socket [[FM2]]
** [[F2A85-M|ASUS F2A85-M]] (μ-ATX)

== Third-party coreboot Support ==

=== Stoney Ridge ===
* Chromebooks supported by [https://docs.mrchromebox.tech/ MrChromebox].
** Acer Chromebook 315 (CB315-2H)
** HP Chromebook 11A G6 EE
** HP Chromebook 11A G8 EE
** HP Chromebook 14A G5
** Acer Chromebook 311 (C721)
** Acer Chromebook Spin 311 (R721T)
** Lenovo 14e Chromebook (S345)
** Lenovo 100e Chromebook Gen 2 AMD
** Lenovo IdeaPad 3 Chromebook 11AST5
** Lenovo 300e Chromebook Gen 2 AMD
** NEC Chromebook Y1 Gen2A

== Microcode Patches ==
All microcode patches released after [[Family 10h]] are encrypted.<ref>https://www.dcddcc.com/docs/2014_paper_microcode.pdf</ref>

{| class="wikitable"
|+Below is the list of ucode versions that could be pulled from the container files in the linux kernel
!commit
!comment
!date
!ucode version
!Microarchitecture
|-
|[https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware/+archive/31f6b3076bab3c4b65f67fdb232f4579ed828b4f.tar.gz 31f6b30]
|linux-firmware: Add AMD microcode patch firmware files
|Jul 11 2013
|06000822
|
|-
|[https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware/+archive/8ac569dd3ca3ca685bd47ee86c1eeb6050864db3.tar.gz 8ac569d]
|linux-firmware: Update AMD microcode patch firmware files
|Nov 30 2014
|06000832
|
|-
|[https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware/+archive/5f8ca0c1db6106a2d6d7e85eee778917ff03c3de.tar.gz 5f8ca0c]
|linux-firmware: Update AMD microcode patch firmware
|Mar 18 2016
|0600084f
|
|-
|[https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware/+archive/77101513943ef198e2050667c87abf19e6cbb1d8.tar.gz 7710151]
|linux-firmware: Update AMD cpu microcode
|May 18 2018
|06000852
|Piledriver
|-
|[https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware/+archive/7518922bd5b98b137af7aaf3c836f5a498e91609.tar.gz 7518922]
|Update AMD cpu microcode for family 15h
|May 25 2018
|0600063e
|Bulldozer
|}

== Models ==
{| class="wikitable"
|+Below is the documentation for all 15h model revisions
!Model rage
!Date
!Revision
!Link
|-
|00h-0Fh
|September 2014
|3.24
|[https://web.archive.org/web/20220321092743/https://www.amd.com/system/files/TechDocs/48063_15h_Mod_00h-0Fh_Rev_Guide.pdf 48063_15h_Mod_00h-0Fh_Rev_Guide.pdf]
|-
|10h-1Fh
|August 2012
|3.08
|[https://web.archive.org/web/20220129072252/https://www.amd.com/system/files/TechDocs/48931_15h_Mod_10h-1Fh_Rev_Guide.pdf 48931_15h_Mod_10h-1Fh_Rev_Guide.pdf]
|-
|30h-3Fh
|April 2014
|1.06
|[https://web.archive.org/web/20220121164248/https://www.amd.com/system/files/TechDocs/51603_Rev_Guide_15h_Models_30h-3Fh.pdf 51603_Rev_Guide_15h_Models_30h-3Fh.pdf]
|}

== Notes and Status ==
[[File:Socket G34 pinmap.svg|thumb|G34 socket pinout]]
* All x86 CPUs include proprietary microcode, in ROM on the CPU itself. Later vendor-provided patches, which update part of this microcode, can be loaded at runtime - these patches are proprietary blobs.
* All Family 15h CPUs are vulnerable to speculative execution exploits if a microcode patch is not loaded.
* Apart from the above, Bulldozer CPUs are generally stable even without microcode patches.
* A microcode patch is strongly recommended for Piledriver CPUs, because of known virtualization-related bugs in their ROM microcode.
* Trinity APUs and Richland APUs additionally require the SMU firmware blob to run. The [[SMU|SMU (System Management Unit)]] is a microcontroller inside AMD SoCs/APUs that handles low-level platform management: power, clocks, voltage, thermal control, power-gating, and related sensors and interrupts. The firmware for this microcontroller is a blob, [https://git.15h.org/mrothfuss/coreboot-15h/src/branch/4.11_branch/src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GnbSmuFirmwareTN.h included as a large array] in the Family 15h [[AGESA]]. Orochi platforms do not require this blob.

== See Also ==

* [[CPU Families Overview]]
* [[AMD Codenames]]
* [[Abbreviations and Acronyms List]]

== References ==