Info LPDDR6 @ Q3-2024: Mother of All CPU Upgrades

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FlameTail

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Dec 15, 2021
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BOMBSHELL NEWS:


"Industry-leading features come with 25% higher performance, 30% more capacity and 25% higher power efficiency

Samsung’s 10.7Gbps LPDDR5X not only improves performance by more than 25% and capacity by more than 30%, compared to the previous generation, but also expands the single package capacity of mobile DRAM up to 32-gigabytes (GB),"

Looks like LPDDR6 will have to wait.
 

FlameTail

Diamond Member
Dec 15, 2021
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I wonder if SK Hynix and Micron will announce their own counterparts to Samsung's LPDDR5X-10700?

When Micron and SK Hynix announced LPDDR5T-9600 and LPDDR5X-9600 respectively, it appeared as if Samsung had fallen behind as their highest speed offering at the time was LPDDR5X-8533.

There were some rumours that Samsung was preparing an 'LPDDR5W' with 9600 Mbps speed to match Micron and Sk Hynix.

But now, with this official announcement, Samsung has absolutely knocked it out of the park with a whopping 10.7 Gbps speed. Now it seems like Micron and SK Hynix have been caught off guard.
 
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FlameTail

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Dec 15, 2021
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The fact that Samsung has announced LPDDR5X-10700, makes me certain we will not seen LPDDR6 supported by the next generation smartphone SoCs (Snapdragon 8 Gen 4, Dimensity 9400).

Think about it, JEDEC hasn't even ratified an LPDDR6 standard yet!
 

poke01

Platinum Member
Mar 8, 2022
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The fact that Samsung has announced LPDDR5X-10700, makes me certain we will not seen LPDDR6 supported by the next generation smartphone SoCs (Snapdragon 8 Gen 4, Dimensity 9400).

Think about it, JEDEC hasn't even ratified an LPDDR6 standard yet!
It will with 8 Gen 6
 

FlameTail

Diamond Member
Dec 15, 2021
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@soresu
It's not about speed limits so much as how a certain bandwidth is achieved efficiently.

For example, GDDR6X doesn't use the standard GDDR6 IO protocols, which means you need a different PHY on the memory controller to handle it.

If these separate, faster LPDDR5 memories are using non standard IO protocols to achieve hgiher bandwidth without exploding the power budget then it balloons the memory controller area budget to accommodate that if they support the standard IO protocol too for cheaper SKUs.
Well, this LPDDR5X-10700 is question is using a better 12nm process, and Samsunf advertises 25% faster speed AND 25% better power efficiency. So no power increment.
 

soresu

Diamond Member
Dec 19, 2014
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Well, this LPDDR5X-10700 is question is using a better 12nm process, and Samsunf advertises 25% faster speed AND 25% better power efficiency. So no power increment.
You are missing my point - if the IO protocol is non standard then it's going to have limited use except in SoC's designed for it.
 
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Doug S

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Feb 8, 2020
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You are missing my point - if the IO protocol is non standard then it's going to have limited use except in SoC's designed for it.

Whether or not it is non standard it limits you to a single OEM for your LPDDR5X-10700. Samsung could use this for their next Galaxy for a marginal gain over the competition, but who else would be interested in being locked into Samsung as their only vendor for their (presumably) high end product - that may compete with Galaxy - unless someone else like Micron introduces an identical offering?
 

FlameTail

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Dec 15, 2021
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Whether or not it is non standard it limits you to a single OEM for your LPDDR5X-10700. Samsung could use this for their next Galaxy for a marginal gain over the competition, but who else would be interested in being locked into Samsung as their only vendor for their (presumably) high end product - that may compete with Galaxy - unless someone else like Micron introduces an identical offering?
Isn't Lunar Lake's on-package LPDDR5X-8533 also exclusively sourced from Samsung?

 

Tuna-Fish

Golden Member
Mar 4, 2011
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I would caution you to be a little more careful about believing in Samsung announcements. They have previously announced a whole bunch of memory products that simply never shipped in volume.

I will believe that Samsung has a LPDDR5X module that can do 10.7Tbps when they actually have the chips in production, and available to customers in volume.

(edit: oops. leaving it as is)
 
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ashFTW

Senior member
Sep 21, 2020
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I would caution you to be a little more careful about believing in Samsung announcements. They have previously announced a whole bunch of memory products that simply never shipped in volume.

I will believe that Samsung has a LPDDR5X module that can do 10.7Tbps when they actually have the chips in production, and available to customers in volume.
10.7Gbps
 

FlameTail

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Dec 15, 2021
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Samsung announced LPDDR5X-8533 in 2021 November. About 15 months later, in 2023 February, they had phones shipping with it (S23 series).

Samsung has officially stated LPDDR5X-10700 mass production starts in 2024H2. They haven't given a shipping date though.

If S25 series utilises LPDDR5X-10700, it will be shipping ~9 months after announcement.

If S26 series utilise LPDDR5X-10700, it will be shipping ~21 months after announcement.
 

FlameTail

Diamond Member
Dec 15, 2021
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I wonder where Samsung's LPDDR5X-10700 announcement fits into this timeline

If LPDDR6 is coming to market in 2026, then LPDDR5X-10700 has to come to market before that, or it doesn't make sense.
 

Doug S

Platinum Member
Feb 8, 2020
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I wonder where Samsung's LPDDR5X-10700 announcement fits into this timeline
View attachment 97268
If LPDDR6 is coming to market in 2026, then LPDDR5X-10700 has to come to market before that, or it doesn't make sense.

Not necessarily if (and I don't know if it is true) their LPDDR5X is fully compatible with LPDDR5X-8533 then it would be a drop in upgrade for existing designs with 5X controllers. A lot of companies (hi Apple) are going to be risk averse about adopting LPDDR6 because they need to be certain sufficient supply is available at their desired price point (relative to 5/5X) when their designs hit the street.

So they need to make the decision about what controller to use at least 18 months before that. Or longer, if LPDDR6 controllers are larger, because they can't make major floorplan changes too close to tapeout.
 
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Tigerick

Senior member
Apr 1, 2022
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Have you heard of the Snapdragon X Plus?
Have you ever thought about 10core would be named as X Plus? Guess not, I have, that's why I said 8 core might be named as X standard model.

  • X Elite with 8 cores might not be correct naming...the thing is the launching date is same as 8 Gen4, could X without Elite be using the same SoC as 8 Gen4??? And 8 cores SoC could be 2+6 Phoenix cores?

Have you wonder why I wait until now to reply? Cause I know you will argue for the sake of argument, just like 5G modem.

Clearly you don't agree which is fine by me. Continue with your 4+4 config with LPDDR5X, here is my speculation of X models:

XX PlusX G2X Elite G2
Model No. ?SM8750 PakalaSM8380S1080 KaanapaliSM8480 Purwa ?
NodeN3EN4PN3EN3P ?
CPU ArchPhoenixPhoenixPegasusPegasus
CPU Counts2 + 6102 + 6?
Memory64-bit LPDDR6128-bit LPDDR5X64-bit LPDDR6128-bit LPDDR6
GPU FP32~ 4TF RT3.8 TF~ 10TF RT
5G ModemBuild-InExternalBuild-InExternal

I am sure you will find something to argue, feel free. I will wait until when Qualcomm announce 8G4 and X then we will see...
 
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FlameTail

Diamond Member
Dec 15, 2021
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Have you ever thought about 10core would be named as X Plus? Guess not, I have, that's why I said 8 core might be named as X standard model.
I already guessed it before X Plus was announced:

http://www.portvapes.co.uk/?id=Latest-exam-1Z0-876-Dumps&exid=threads/qualcomm-snapdragon-thread.2616013/post-41196292
I am sure you will find something to argue, feel free. I will wait until when Qualcomm announce 8G4 and X then we will see...
Fine, let's wait till 8G4 is announced.
 

FlameTail

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Dec 15, 2021
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JEDEC is set to ratify LPDDR6 standard this year, but I don't the Android chipsets coming at the end of the year are going to support it.
 

Gideon

Golden Member
Nov 27, 2007
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Grandpa it's gonna be 384b now.
Each LPCAMM for L6 is 192b.
That's excellent stuff. Mainstream really needs a bus width bump.

I do wonder what that means for consumer zen6 and DDR5 support.

Are they really gonna support 192bit LPDDR6 and 128bit DDR5 from the same controller? If not it's EOL for AM5.

3-channel DDR5 support would be fun (yeah i know, not happening)
 

Tuna-Fish

Golden Member
Mar 4, 2011
1,494
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Am I reading that right and every single LPCAMM2 module gets 16bits for host-managed metadata per 32B of data?

If that's real you can do both CHERI and proper ECC, on every system from client to server.

This just took me from "yawn, it's just another memory standard" to so exited I almost just got another warning for expletives.
 
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Kepler_L2

Senior member
Sep 6, 2020
565
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That's excellent stuff. Mainstream really needs a bus width bump.

I do wonder what that means for consumer zen6 and DDR5 support.

Are they really gonna support 192bit LPDDR6 and 128bit DDR5 from the same controller? If not it's EOL for AM5.

3-channel DDR5 support would be fun (yeah i know, not happening)
Nope, if you look into the JEDEC docs that got found today it explicitly says that LPDDR6 and DDR6 are not compatible.
 
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