Wednesday, May 6th 2026

AMD X970E Chipset Based on Same Promontory 21 Silicon as X870E and X670E, Native Support for CUDIMM

May 6th, 2026 14:29 Discuss (133 Comments)

AMD's next-generation 900-series chipset to launch alongside Ryzen desktop processors powered by the "Zen 6" microarchitecture, could be fundamentally the same chipset as the current 800-series, based on the same "Promontory 21" silicon designed by ASMedia. What differentiates the platform from current 800-series and previous 600-series chipset could be a series of add-on features, new BIOS-level software features AMD is introducing with its next-gen processors, and a significantly overhauled memory support.

With its next-gen Ryzen "Olympic Ridge" desktop processors, AMD is introducing a new client I/O die, probably built on the 4 nm foundry node. This new cIOD is expected to feature a new set of DDR5 memory controllers that support higher DRAM clock speeds, tighter timings, and come with native support for CUDIMMs and CAMMs. The motherboard-side readiness for CUDIMMs and DDR5 CAMMs could be exclusive to AMD 900-series chipset models. AMD is readying the new EXPO 1.2 standard for overclocking DDR5 memory modules. With these upgraded memory controllers and native support for CUDIMMs backed by EXPO 1.2, AMD can catch up with Intel in terms of DDR5 memory speeds.

Sources: VideoCardz, MEGAsizeGPU (Twitter)

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133 Comments on AMD X970E Chipset Based on Same Promontory 21 Silicon as X870E and X670E, Native Support for CUDIMM

jesdals

Well I do hope that all AM5 chipsets will support these and AMD dosnt addopt Intels socket trickery

csendesmark

Will the CPU lanes run at PCIe v5?
Zen 5 CPUs support 28 PCIe v5 lanes,since the X870 only has PCIe v4 lanes.
Would be a welcome upgrade IMO.

Panther_Seraphin

csendesmarkWill the CPU lanes run at PCIe v5?
Zen 5 CPUs support 28 PCIe v5 lanes,since the X870 only has PCIe v4 lanes.
Would be a welcome upgrade IMO.

X870 Supports PCI 5.0 for GPU and 1-2 M.2 depending on board layout

TumbleGeorge

If title is true I'll go to Intel. No more old promontory soup for me. No more reheated sour soup.

_roman_

awesome :) just awesome.

i highly doubt taht those ryzen 9000 specific features can not be turned on for ryzen 7000
i doubt 870E features can not be turned on for chipset 670e.

TheGeekn°72

Panther_SeraphinX870 Supports PCI 5.0 for GPU and 1-2 M.2 depending on board layout

that was already true on X670E

Athena

jesdalsWell I do hope that all AM5 chipsets will support these and AMD dosnt addopt Intels socket trickery

seems to require board changes.... so, highly doubtful

MEGAsizeGPU claims the new platform may still use PROM21, the same chipset family behind current AM5 boards. The change would instead come from BIOS, board routing, and memory support.

TumbleGeorgeIf title is true I'll go to Intel. No more old promontory soup for me. No more reheated sour soup.

why? I mean, it's common practice to build off of what they had before, so, do you think they should build it again from the ground up, instead of tweaking what they need to support the newer tech?

TumbleGeorge

Athenawhy? I mean, it's common practice to build off of what they had before, so, do you think they should build it again from the ground up, instead of tweaking what they need to support the newer tech?

I think the news may be wrong. Because it is based on first hints of new motherboards from Biostar, and they are not the fastest implementers and it may actually be just an updated motherboard with the X870E chip from this company. As there are already updated models available from the "faster" companies.

csendesmark

Panther_SeraphinX870 Supports PCI 5.0 for GPU and 1-2 M.2 depending on board layout

All X870chip to CPU is only PCIe v4 while all ZEN 5 is full PCIe v5

TheGeekn°72that was already true on X670E

You are both wrong, the X670 is also only v4 to the CPU

The lanes to the GPU (first PCIe slot) has nothing to do with the motherboard chip,
Those are directly wired to the CPU.

#10

Panther_Seraphin

csendesmark*SNIP*

Your first statement was a little ambiguous, my apologies.

Yes its 4.0 to the chipset and I doubt that will change if its using the same silicon as it will be limited by that. Also I would argue that it should have seperate links to each chipset as that would solve some of the bandwidth issues as your not sharing 1 link between 2 chipsets, but thats completely wishful thinking.

#11

Blurpy

csendesmarkWill the CPU lanes run at PCIe v5?
Zen 5 CPUs support 28 PCIe v5 lanes,since the X870 only has PCIe v4 lanes.
Would be a welcome upgrade IMO.

Do you mean the PCI-E lanes going to the chipset? Cause the lanes going directly to the CPU are already supported at PCI Gen5 on x870 and x670 boards.

#12

csendesmark

BlurpyDo you mean the PCI-E lanes going to the chipset? Cause the lanes going directly to the CPU are already supported at PCI Gen5 on x870 and x670 boards.

The article is about an upcoming chipset so I was referring to the CPU lanes in that context.
Ithought it was clear. I only brought it up because that would be a meaningful upgrade, unlike things like CUDIMM support.

And no, none of the AM5 CPU-to-chipset lanes are PCIe v5, I even posted some reference in my previous post to inform you,
But you are welcome to prove me wrong.

#13

LiKenun

Whelp. That cinches my purchase decision for my next build. Nova Lake and Intel’s again superior CPU-chipset bandwidth on the motherboard.

#14

dgianstefani

TPU Proofreader

LiKenunWhelp. That cinches my purchase decision for my next build. Nova Lake and Intel’s again superior CPU-chipset bandwidth on the motherboard.

Yeah current Z890 is already a superior chipset/platform than AM5, if Promontory is rehashed again then Intel will essentially be two steps ahead chipset wise.

#15

igormp

btarunrWith its next-gen Ryzen "Olympic Ridge" desktop processors, AMD is introducing a new client I/O die, probably built on the 4 nm foundry node. This new cIOD is expected to feature a new set of DDR5 memory controllers that support higher DRAM clock speeds, tighter timings, and come with native support for CUDIMMs and CAMMs. The motherboard-side readiness for CUDIMMs and DDR5 CAMMs could be exclusive to AMD 900-series chipset models.

If the support is mostly due to the new controllers, then I don't see how it would not work on previous motherboards other than an artificial software limitation.

csendesmarkThe article is about an upcoming chipset so I was referring to the CPU lanes in that context.
Ithought it was clear. I only brought it up because that would be a meaningful upgrade, unlike things like CUDIMM support.

And no, none of the AM5 CPU-to-chipset lanes are PCIe v5, I even posted some reference in my previous post to inform you,
But you are welcome to prove me wrong.

Your initial comment did lead to misunderstanding:

csendesmarkWill the CPU lanes run at PCIe v5?

Maybe clarifying that you were talking about the chipset lanes and not the entire CPU would've made it clear.

Anyhow, if it's still on PROM21, then PCIe 4.0 it is. But I personally prefer CUDIMM over an upgrade to the chipset lanes, and better yet if said support comes to the previous generations as well.

#16

Blurpy

csendesmarkThe article is about an upcoming chipset so I was referring to the CPU lanes in that context.
Ithought it was clear. I only brought it up because that would be a meaningful upgrade, unlike things like CUDIMM support.

And no, none of the AM5 CPU-to-chipset lanes are PCIe v5, I even posted some reference in my previous post to inform you,
But you are welcome to prove me wrong.

I think we’re both a little lost I know the lanes going to the chipset are PCI-E 4 your original statement was a little broad at least to me it seemed like you were saying that all PCI-E lanes including direct to the cpu were PCI-4 so I was trying to get clarification on what you meant.

#17

Panther_Seraphin

dgianstefaniYeah current Z890 is already a superior chipset/platform than AM5, if Promontory is rehashed again then Intel will essentially be two steps ahead chipset wise.

Still not 100% sure what the chipset is offering that is going to be leagues ahead IMO. 90-95% of the heavy lifting is being done with direct PCI-E 5.0 links to the CPU.

#18

_roman_

the cpu link for those chipsets on am5 are usually always 4 x pcie 4.
as can be seen of most mtoherboard reviews or motherboard manuals when you look at the block diagramm.

at the end of teh day look at the block diagramm in the online manual of your motherboard first.

intel has the better chipset and motherboard because they just release another motherboard which hardly works with anything else as the current cpu. usually 2-3 cpu generations for intel motherboards.

when you need all those input output io get now an intel motherboard or a workstation motherboard. am5 is a low end consumer platform and not a threadripper platform.

some 800 amd chipsets just remove 8 pcie 5 lanes from the graphic card socket and use it for m2.

when you want to see flaws etc for am5 motheboards check out this spreadsheet: docs.google.com/spreadsheets/d/1NQHkDEcgDPm34Mns3C93K6SJoBnua-x9O-y_6hv8sPs/edit?gid=1502922237#gid=1502922237

randomly picked:
that is the case because am5 is a consumer platform and not a threadripper motherboard.

- PCIEX16(G5)_2 can operate at 3x4 (chipset lanes) simultaneously with PCIEX16(G1)_1 running at 5x16 (CPU lanes). They can be set to bifurcate to x8/x8 or other configurations (both off the CPU, see cell note) in the BIOS.
- The USB4 ports share bandwidth with M2_2 (5x4); they run at 5x2 (in reality, likely 4x2 since ASM4242 operates on a PCIe 4.0x4 interface by default) if M.2_2 is occupied in x2 mode. If M.2_2 is set to x4 in the BIOS, the USB4 ports are fully disabled.
- M.2_2 is also disabled with Phoenix 2 CPUs.
- M.2_5 (4x2) only takes 2230 M.2s.

for firmware look here: docs.google.com/spreadsheets/d/12zg6yT_H7H-W1voyw1ZoIrj0GSE7WI4Ug-uLlv-Asa8/edit?gid=937453961#gid=937453961

note: what intel does or not does I do not care recently because of the mixed cpu cores and mixed cpu instructions

#19

csendesmark

igormpYour initial comment did lead to misunderstanding:

BlurpyI think we’re both a little lost I know the lanes going to the chipset are PCI-E 4 your original statement was a little broad at least to me it seemed like you were saying that all PCI-E lanes including direct to the cpu were PCI-4 so I was trying to get clarification on what you meant.

Context is everything
I replied to an article about a new Mainboard chipset, addressing the CPU lanes, It is super clear,
But to make sure I am super-duper clear, in my second line wrote: "Zen 5 CPUs support 28 PCIe v5 lanes,since the X870 only has PCIe v4 lanes."
So everybody can see I am not talking about the lanes coming from the CPU :toast:

_roman_some 800 amd chipsets just remove 8 pcie 5 lanes from the graphic card socket and use it for m2.

That has nothing to do with the chipset, but the physical wiring of the mainboard, since those are directly connected to the CPU

#20

Makaveli

"This new cIOD is expected to feature a new set of DDR5 memory controllers that support higher DRAM clock speeds, tighter timings"

I only care about this above and if that means I get this with just a Zen 6 X3D chip upgrade into my 670E boards i'm good.

I'm not changing boards until AM6 and DDR6

#21

LiKenun

_roman_when you need all those input output io get now an intel motherboard or a workstation motherboard. am5 is a low end consumer platform and not a threadripper platform.

AMD, unfortunately, has nothing filling in the space between consumer and prosumer. I look at Threadripper and I see parts with 350 W TDP. They offer nothing which has both < 200 W TDP and high total PCIe lane/bandwidth. I do not want the high core count nor do I want to deal with a 350 W part.

#22

Visible Noise

I’ll bet AMD motherboard’s prices will increase while they recycle four year old chipsets.

Because AMD is your friend.

#23

Chaitanya

Personally interested to find out if B900 series chipset will support USB4 or not, that is the only feature for which I would consider upgrading to Zen6 platform later in the year.

#24

Blurpy

csendesmarkContext is everything
I replied to an article about a new Mainboard chipset, addressing the CPU lanes, It is super clear,
But to make sure I am super-duper clear, in my second line wrote: "Zen 5 CPUs support 28 PCIe v5 lanes,since the X870 only has PCIe v4 lanes."
So everybody can see I am not talking about the lanes coming from the CPU :toast:

That has nothing to do with the chipset, but the physical wiring of the mainboard, since those are directly connected to the CPU

Cool thanks for the clarification FWI the chipset silicon is Promontory 21, same chip used from B650 all the way up through X870E. X870 is just a product tier name, not a specific piece of silicon, it sounded like you were talking about the whole board not the chipset.

#25

tabascosauz

Makaveli"This new cIOD is expected to feature a new set of DDR5 memory controllers that support higher DRAM clock speeds, tighter timings"

I only care about this above and if that means I get this with just a Zen 6 X3D chip upgrade into my 670E boards i'm good.

I'm not changing boards until AM6 and DDR6

Hoping for better interconnect along with the strong UMC, so that high DDR5 clocks don’t turn out to be worthless in practice

I do like my board and would like to keep using it

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AMD X970E Chipset Based on Same Promontory 21 Silicon as X870E and X670E, Native Support for CUDIMM

133 Comments on AMD X970E Chipset Based on Same Promontory 21 Silicon as X870E and X670E, Native Support for CUDIMM

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133 Comments on AMD X970E Chipset Based on Same Promontory 21 Silicon as X870E and X670E, Native Support for CUDIMM

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