Tuesday, September 26th 2017

AMD Zen 2 Architecture: Socket AM4, 2019, Code-named "Matisse"

AMD's Zen-based Ryzen and Threadripper have been said by the company as representing the "worst case scenario" of performance for their architecture. This is based on the fact that there are clear areas for improvement that AMD's engineers were keenly aware of even at the moment of Zen's tapping-out; inadvertently, some features or improvements were left on the chopping block due to time and budget constraints. As unfortunate as this is - who wouldn't love to have even more performance on their AMD processors - this also means AMD has a clear starting point in terms of improving performance of their Zen micro-architecture.

Spanish website Informatica Cero have gotten their hands on what they say is an exclusive, real piece of information from inside AMD, which shows the company's CPU roadmap until 2019, bringing some new details with it. On the desktop side, there's mention of AMD's "Pinacle Ridge" as succeeding the current Zen-based "Summit Ridge" Ryzen CPUs in 2018. These leverage the same Summit Ridge architecture, but with a performance uplift; this plays well into those reports of 12 nm being used to manufacture the second-generation Ryzen: it's an AMD tick, so to say. As such, the performance uplift likely comes from increased frequencies at the same power envelope, due to 12 nm's denser manufacturing design.
Another interesting tidbit from this slide is the confirmation of AMD's Zen 2 processors being released in 2019. Based on the company's revised Zen 2 cores (which should see those architectural improvements we were talking about in the beginning of this piece), AMD also seems to be doing away with the ridge-like codenames they've been using in recent times, and taking a more artistic approach. Matisse seems to be the code-name for AMD's Zen 2 architecture, and if you know your painters, it looks like AMD is betting on its Zen 2 cores to further define and influence CPU design. There is no mention of increased Zen threads, however, which likely points towards AMD keeping the same 8-core, 16-thread design as with their current Summit Ridge. This likely plays into AMD's plan for keeping the AM4 socket relevant - while good for consumers who might want to see longevity in their platform, it does prevent AMD from making more radical design changes to their architecture.
Jumping towards its notebook/desktop APU designs, AMD is looking to accompany Matisse with their code-named Picasso APUs for 2019. These should still leverage the company's upcoming Raven Ridge line of APUs, which pair Vega 11 NCUs on the graphical side of the equation and up to 8 Zen threads (4-core CPUs with SMT). However, usage of 12 nm processes across both its Zen CPU cores and Vega 11 NCUs apparently give AMD confidence that they can improve Picasso over Raven Ridge not only in the performance fields, but also the power consumption metrics.

A little bit of lore: AMD seems to be changing their code-names towards painters, and the marriage of Matisse in the CPU and Picasso in the APU space isn't a coincidence. Both artists are considered two of the most important players in the arts space of the beginning of the twentieth century, responsible for both defining and developing the arts. AMD's choice of both of them is, therefore, not a fluke; it's likely more of an artistic take on the company's vision of further defining itself as a key innovative player in the CPU space.
Sources: Informatica Cero, Pablo Picasso @ Wikipedia, Henri Matisse @ Wikipedia
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65 Comments on AMD Zen 2 Architecture: Socket AM4, 2019, Code-named "Matisse"

#26
R0H1T
Vya DomusThat's why we can't agree , that statement is not entirely relevant. Like I said GF manufactured the FX chips on 32nm and those could hit 5 Ghz as well.

The fact that GF can make 5Ghz chip on their newest nodes doesn't tell us anything with regards to Zen+ or Zen 2. Can those do 5 Ghz on that node ? No way to tell , it's all 100% guesses at this point.
Those were FX 8350 OCed to the wall, besides the base clock wasn't 5GHz, it was turbo. Now anyone comparing that to the OCed Intel chips is also forgetting none of the Intel chips are sold as 5GHz monstrosities, not even with single core turbo.

We've also seen Ryzen being OCed to 5GHz or beyond with extreme cooling. So at this point in time we don't know whether Zen is suited to 5GHz, on water, or that this is purely GF's process limitation. The z14 btw is on a different HP process.
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#27
Vya Domus
My point is , you can't predict anything just by the manufacturing process.
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#28
EarthDog
Vya DomusThose IBM CPUs must cost a fortune.
not sure on the per unit cost. We had oracle systems in my data center and those machnes , 8 of them, cost 2.5M. Bht they were fully loaded. Engineered systems cost a ton.
Vya DomusMy point is , you can't predict anything just by the manufacturing process.
or an unrelated architecture.
Posted on Reply
#29
R0H1T
Vya DomusMy point is , you can't predict anything just by the manufacturing process.
But then why are we talking about OCed Intel chips anyway? Can every chip clock upto 5GHz, perhaps 50% or is this pure silicon lottery?
Posted on Reply
#30
laszlo
nice to see AM4 socket will remain in use.

actually we can predict to a point that new chips will be at least so fast as now clockwise and add 10-15% ipc improvement; tdp wise they shouldn't reach current one's but depend how good is this 12 nm process ...

just my 2c...
Posted on Reply
#31
Vya Domus
R0H1TCan every chip clock upto 5GHz, perhaps 50% or is this pure silicon lottery?
You are talking as if 1 in a million chips clocks up to infinity. It's not as random as you think , these chips are in fact engineered to reach those clocks and then binned. If a chip does reach 5 Ghz overclocked it's not that amazing , it was meant to reach those speeds just not optimized to do it consistently or in a cost effective manner. These chips don't reach those clocks out of "pure luck" they were designed to do it.
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#32
ShurikN
If that refreshed Zen+ could reach 4.3 (or make single core turbo higher), i'd call that a massive win for AMD. Would make a perfect gap filler to Zen2. Not to mention AM4, one socket, 3 generations (at least).
Posted on Reply
#33
R0H1T
Vya DomusYou are talking as if 1 in a million chips clocks up to infinity. It's not as random as you think , these chips are in fact engineered to reach those clocks and then binned. If a chip does reach 5 Ghz overclocked it's not that amazing , it was meant to reach those speeds just not optimized to do it consistently or in a cost effective manner. These chips don't reach those clock out of "pure luck".
So are Ryzen, they just need extreme cooling to get to that mark. A better comparison would be the mainstream top dogs, where 7700k enjoys at least half a GHz clock speed advantage over 1800x.

Once again OCing results are not guaranteed & when you say that it's highly disingenuous because KBL or SKLx aren't engineered to reach those clocks.
Posted on Reply
#34
Vya Domus
R0H1TSo are Ryzen, they just need extreme cooling to get to that mark.
They clearly aren't , hitting 5 Ghz on LN2 doesn't count. Or rather if it does then we might just as well call even the Pentium 4 a 5 Ghz chip because, hey , that one reached 5 Ghz on LN2 too. I'm talking about the usual circumstances.

But what are we even talking about anymore ?
Posted on Reply
#35
R0H1T
Vya DomusThey clearly aren't , hitting 5 Ghz on LN2 doesn't count. Or rather if it does then we might just as well call even the Pentium 4 a 5 Ghz chip because, hey , that one reached 5 Ghz on LN2 too.

But what are we even talking about anymore ?
So why do you insist that KBL is engineered to reach 5GHz, I showed you 2 chips which were meant to do so even at stock!
If it's OCed & yet isn't guaranteed to reach 5GHz, what do you call that?
Posted on Reply
#37
Vya Domus
R0H1TSo why do you insist that KBL is engineered to reach 5GHz, I showed you 2 chips which were meant to do so even at stock!
If it's OCed yet not guaranteed to reach 5GHz, what do you call that?
What ? When did I say that ?

I simply gave you an example of a series of CPUs built on a manufacturing process from 2010 , that can reach very high clock speeds , to make you understand that there are way more factors involved in this other than the node itself. Something you seem to not want to agree with , which is fine but this went on for far too long and now we're talking about things that have little to do with the original matter.
Posted on Reply
#38
R0H1T
Vya DomusWhat ? When did I say that ?

I simply gave you an example of a series of CPUs built on a manufacturing process from 2010 , that can reach very high clock speeds , to make you understand that there are way more factors involved in this other than the node itself. Something you seem to not want to agree with , which is fine but this went on for far too long and now we're talking about things that have little to do with the original matter.
This was in response to ~
R0H1TBut then why are we talking about OCed Intel chips anyway? Can every chip clock upto 5GHz, perhaps 50% or is this pure silicon lottery?
Vya DomusYou are talking as if 1 in a million chips clocks up to infinity. It's not as random as you think , these chips are in fact engineered to reach those clocks and then binned. If a chip does reach 5 Ghz overclocked it's not that amazing , it was meant to reach those speeds just not optimized to do it consistently or in a cost effective manner. These chips don't reach those clocks out of "pure luck" they were designed to do it.
I agreed with the second point on last page, the 32 nm was also SOI, probably developed in collaboration with IBM as well.

But then you insisted that Intel chips can be OCed to 5GHz, because they were meant to? This is not the case, unless we have different definitions of easy.
Posted on Reply
#39
Vya Domus
Kaby Lake reaches 5 Ghz under pretty normal circumstance and consistently so , you're telling me that's just pure luck ?

Ryzen does not and there is no guarantee it will do on an improved node, though somehow you are convinced it will.
Posted on Reply
#40
R0H1T
Vya DomusKaby Lake reaches 5 Ghz under pretty normal circumstance and consistently so , you're telling me that's just pure luck ?

Ryzen does not and there is no guarantee it will do on an improved node, though somehow you are convinced it will.
No because ambient temps & cooling matter a lot, what's pure luck btw in this context?
Posted on Reply
#41
Vya Domus
R0H1TNo because ambient temps & cooling matter a lot, what's pure luck btw in this context?
:banghead:

You do realize how much of a oxymoron you're claims are ? You think Intel's chips reach 5 Ghz out of pure luck but somehow you are convinced Zen+ will hit 5 Ghz guaranteed based on no real evidence.

OK , let's wrap this up according to you :

- being a engineer at Intel must be a really easy job , you get insane speeds out the chips you designed in a consistent manner just by luck !
- all that matters is the node , but not just any node , only the ones developed with IBM
- Zen+ and 5 Ghz basically confirmed

Got it. Anything else ?
Posted on Reply
#42
R0H1T
Vya Domus:banghead:

You do realize how much of a oxymoron you're claims are ? You think Intel's chips reach 5 Ghz out of pure luck but somehow you are convinced Zen+ will hit 5 Ghz guaranteed based on no real evidence.

OK , let's wrap this up according to you :

- being a engineer at Intel must be a really easy job , you get insane speeds out the chips you designed in a consistent manner just by luck !
- all that matters is the node , but not just any node , only the ones developed with IBM
- Zen+ and 5 Ghz basically confirmed

Got it. Anything else ?
No because according to you Skylake was also engineered to reach 5GHz :rolleyes:

So let's see what changed between SKL & KBL :confused: maybe that'll answer your own theory?
Posted on Reply
#43
Vya Domus
No , I give up. You figured out this entire multi-billion dollar industry within seconds just by yourself. What can I say we need to step up our game.
Posted on Reply
#44
[XC] Oj101
Ho. Lee. Crap. Why is everyone so hung up on frequency? It's only one factor of performance and MEANINGLESS without IPC.
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#45
Vya Domus
[XC] Oj101Ho. Lee. Crap. Why is everyone so hung up on frequency? It's only one factor of performance and MEANINGLESS without IPC.
Fancy big numbers look pretty.
Posted on Reply
#46
eidairaman1
The Exiled Airman
Vayra86If AMD still wants to capture all those potential buyers of an 8700k, they had better push out some leaks regarding high clock speeds, fast.
That or Ryzen 1+(if they make it at all) which resolves a lot of teething issues from the first batch.

Vya Domus, you can write r01ht till you are blue in the face and fingers sore and it will still argue for arrogance's sake. Easier to walk away from situations like this.
Posted on Reply
#47
RejZoR
Making chip run at 5+ GHz is not really a problem. Any chip can be designed to run at that speed and foundry just makes it. The thing is, Ryzen for example simply wasn't designed to run at clocks far beyond 4.1 GHz. It's not really a thing with the foundry. Partially yes, but to achieve high clocks, you need to design a pipeline in a certain way. Usually you need more pipeline stages. More stages can induce unwanted high latencies. So, vendors always try to find balance between clocks and number of pipeline stages. Going to far into one or another direction and you might end up with another Bulldozer.

They'll probably tinker with Ryzen a bit to achieve slightly higher clocks, probably at slight expense of consumption which they'll compensate with a newer node. So, in general it should clock a bit higher, but not consume any more power. Which is exacty what you want for an upgrade.
Posted on Reply
#48
R-T-B
Vya DomusYou do realize how much of a oxymoron you're claims are ? You think Intel's chips reach 5 Ghz out of pure luck but somehow you are convinced Zen+ will hit 5 Ghz guaranteed based on no real evidence.
I think his only real point is that GloFo has a process capable of doing higher clocks than the lpp Zen is using today.

I too believe that the LPP is holding Zen back.
Posted on Reply
#49
EarthDog
R-T-BI think his only real point is that GloFo has a process capable of doing higher clocks than the lpp Zen is using today.
Right.. which we are saying isn't relevant. Just as Huffy makes a bike that goes 50 MPH, that doesn't mean ALL bikes made by Huffy go 50 MPH... which is, seemingly, the point he keeps harping on. There are too many differences in uarch and other things which make that point, well, utterly useless.
Posted on Reply
#50
R-T-B
EarthDogRight.. which we are saying isn't relevant. Just as Huffy makes a bike that goes 50 MPH, that doesn't mean ALL bikes made by Huffy go 50 MPH... which is, seemingly, the point he keeps harping on. There are too many differences in uarch and other things which make that point, well, utterly useless.
The whole thing started with birdies troll comment on Intel being the only 5 GHz node, you realize.

It looks like you all got trolled into a pointless debate.
Posted on Reply
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