Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)

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Jul 27, 2020
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Even with ARM, AMD becomes another generic ARM vendor. I doubt they can be competitive with even top 5 vendors.
If they iterate upon Keller's design, maybe they have something decent to start with? AMD is in a unique position to have the first heterogeneous ISA CPU in the world. Boot with ARM or x86-64 OS or boot with one of them and use the other through a hypervisor. If they even use their Bobcat core as the x86-64 part of the heterogeneous ISA equation, it would still be a super exciting SoC. Why emulate when you can run Android applications at native speed? Or dual boot between Windows x86-64 and Windows on ARM. Would certainly open up interesting applications.
 

gdansk

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Feb 8, 2011
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If they iterate upon Keller's design, maybe they have something decent to start with? AMD is in a unique position to have the first heterogeneous ISA CPU in the world. Boot with ARM or x86-64 OS or boot with one of them and use the other through a hypervisor. If they even use their Bobcat core as the x86-64 part of the heterogeneous ISA equation, it would still be a super exciting SoC. Why emulate when you can run Android applications at native speed? Would certainly open up interesting applications.
Nvidia and Transmeta were close (through unconventional means) but neither shipped anything like that.
But it was never even considered for K12/Zen.
 

Gideon

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Nov 27, 2007
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Interesting take from David Huang, it looks like 16K TLB (and up to 64K) actually works quite well on Zen 5:


Interesting OS details: When Linux uses 4K pages and turns off THP, Zen's TLB coalescing cannot be triggered because the memory mapping granularity is pages, and the TLB coverage is 4K*entry. However, under Windows, since the granularity is 64K, the TLB coverage of the equivalent 16K page can be observed normally. In theory, the hardware can be seamlessly expanded to a larger 64K in the future. This is also one of the few places where I have seen Windows perform better than Linux in recent years.

And followup:
TLB coalescing refers to this feature, which is basically a 16K page that is transparent to software.

 
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adroc_thurston

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Jul 2, 2023
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Only a problem for penny pinchers who don't want to actually sell anything at volume
a) laptop volumes are lesser
b) anything mainstream phone SoC is usually N-2 for a good reason!
Qualcomm, MediaTek, Apple and even Intel are all making N3 designs shipping in cheaper devices than Strix Point
I don't think you understand the BOM for any of those.
LNL in particular is $$$.
M4 is 160mm2 of N3E and is shipping in far cheaper devices than HX370
M4 in anything resembling a laptop starts at about $1699 or whatever the baseline 14" MBP config is.
If N3E was too expensive for AMD you have to ask what's blowing out their transistor counts relative to the competition
It's too expensive because you have to keep the costs to OEMs palatable, and no one lived or died by 15% perf 3-2 N3e offers.
There's a good reason LNL is a one-off, with PTL moving both to cheaper internal nodes and axing every bit of platform fancy there is.
 

gdansk

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M4 in anything resembling a laptop starts at about $1699 or whatever the baseline 14" MBP config is.
It's $1400 at Amazon. Which is cheaper than any HX 370 laptop I can find on Amazon. The cheapest HX 370 mini PC starts at $1000 vs $600 for Mac Mini. I am not even convinced M4 is more expensive to make at all given the die size difference.
 

adroc_thurston

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Jul 2, 2023
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Which is cheaper than any HX 370 laptop I can find on Amazon
Vivobook S14 is 1.2kilobuck for a 24G/1TB config. Don't. This is embarrassing.
The cheapest HX 370 mini PC starts at $1000 vs $600 for Mac Mini.
Any actual volume NUCs with Strix from the likes of Asus aren't even out.
I am not even convinced M4 is more expensive to make at all given the die size difference
It is, and then there's a platform premium.
Next.
 

gdansk

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Feb 8, 2011
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It is, and then there's a platform premium.
Next.
Doesn't look like it. There's one (1) laptop HX 370 laptop that's available (where? not Amazon; nor Best Buy apparently) for less than the MBP 14 which I'm sure is better built (inb4 notch and jello screen).
Any actual volume NUCs with Strix from the likes of Asus aren't even out.
And they won't be, too costly.
It's too expensive because you have to keep the costs to OEMs palatable, and no one lived or died by 15% perf 3-2 N3e offers.
So they made a product that is bigger than all the competition. And what is the plan for next year? A refresh with a 10% faster NPU again? How do they expect to gain laptop market share. The entire strategy seems to rely on Intel sucking forever (that might work out).
 

adroc_thurston

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Jul 2, 2023
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Doesn't look like it.
So true.
There's one (1) laptop HX 370 laptop that's available (where? not Amazon; nor Best Buy apparently)
Took me the whole of 15 seconds to find the exact SKU.
So they made a product that is bigger than all the competition
It's also plenty mean. Hope that helps.
And what is the plan for next year? A refresh with a 10% faster NPU again
The plan is called Kraken1.
How do they expect to gain laptop market share
Aggressively playing HPT1/2 and KRK1 in the channel. Commercial in particular.
The entire strategy seems to rely on Intel sucking forever (that might work out).
Well, only Intel understands PC as far as Windows vendors go. So yeah, gotta kick them and you win.
 
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gdansk

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Took me the whole of 15 seconds to find the exact SKU.
That's the 365 version.
It's also plenty mean. Hope that helps.
Not compared to the M4. It's more comparable to the most common SDXE SKUs which are smaller and also cheaper. Only thing giving HX 370 any market is the x64 ghetto and a Radeon GPU which 86% of people would not choose if Nvidia was an option.
 
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adroc_thurston

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Amazon goes to greats length to hide the CPU name, it’s actually the HX 365
Ouch.
That's the 365 version.
Ouch. But Apple also sells binned stuff aplenty.
No compared to the M4
Different things.
It's more comparable to the most common SDXE SKUs which are smaller and also cheaper
SDXE has a joketastic GPU. Next.
Only thing saving it is the x64 ghetto.
The ghetto that understands PC, yes.
No one else besides Apple does (but Apple's been building good PCs since ~2011 MBP or therein).
 

gdansk

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Feb 8, 2011
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The ghetto that understands PC, yes.
No one else besides Apple does.
Even with the WoA handicap Qualcomm has more appealing laptops than AMD this year. Maybe that changes next year.
LNL has better still but that's because as you say Intel understands OEMs. AMD seems to lack OEM muscle even compared to newcomer Qualcomm.
 

adroc_thurston

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Jul 2, 2023
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Even with the WoA handicap Qualcomm has more appealing laptops than AMD this year
They do not.
Maybe that changes next year.
Nothing changes as far as Qualcomm goes.
LNL has better still but that's because as you say Intel understands OEMs
It's better because it's an expensive part on an expensive platform made to maximize the expensiveness. All that is gone H2'25 with PTL.
AMD seems to lack OEM muscle even compared to newcomer Qualcomm.
This is the funniest joke I've ever seen.
Should we start counting the units shipped in % of 2024 PC TAM? gonna hurt.
Also QC isn't a newcomer, they've been doing it for 7 years. It's a case of utter ineptitude at volume building.
 

adroc_thurston

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Sure, as long as you compare Strix Point laptops to SDXE laptops it'll be pretty close.
It's not gonna be even remotely close.
Apple has vertical integration, so it’s unfair to compare AMD with them.
"Vertical integration" means they just get to pocket the margin delta that OEM takes. I.e. they get to stuff a more expensive SOC/panel/yaddayadda into a given laptop without hurting the final gm.
 

gdansk

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Feb 8, 2011
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Apple has vertical integration, so it’s unfair to compare AMD with them.
Why? AMD wants to compete in laptops. I see them as mainly interchangeable and so do many others. There are factors that AMD cannot control (like Windows 11 sucking) but that doesn't stop people from buying an Apple laptop instead of an AMD-powered laptop.
 

misuspita

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Jul 15, 2006
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It's $1400 at Amazon. Which is cheaper than any HX 370 laptop I can find on Amazon. The cheapest HX 370 mini PC starts at $1000 vs $600 for Mac Mini. I am not even convinced M4 is more expensive to make at all given the die size difference.
I live in Romania, and here we have on the greatest e-tailer (link, if you wanna check) 50 models... So yeah.... different. The cheapest is under 1000 euro (1 euro=5 lei). Also, I wouldn't count base MacMini, that's just a hook from Apple to catch the plebs... while the CPU is great and ram is acceptable, fixed 256GB in this day and age is not acceptable. And if you go to a devoce that has 24GB and 1TB of memory, you are over twice the base price and higher than a Beelink SER9, which is a 32GB Ram and 1TB sdd. And looks exactly like a Macmini before the Macmini was this size
 

yottabit

Golden Member
Jun 5, 2008
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It means they have to keep the OEMs from starving by keeping SoC/platform costs at bay. Next.
I mean it’s not just that, it should be obvious to anyone that AMD is selling CPUs to vendors at a profit, who are then turning around and trying to ship a completed system for a profit. Apple cuts out the middleman there so they are automatically getting their CPUs for “cheaper”

But please this is probably the dozenth time the topic has revolved back to AMD vs Apple, I think it’s fair game for outright performance discussions and architecture but I don’t want to listen to bickering about laptop prices

Macbook Pro price is like the tech bro equivalent of the price of a dozen eggs
 

gdansk

Diamond Member
Feb 8, 2011
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I think it’s fair game for outright performance discussions and architecture but I don’t want to listen to bickering about laptop prices
The excuse for the less competitive performance is that it is cheaper to make. This may apply to Granite Ridge but not Strix Point. Its die is so much larger than the competition that it matches or exceeds the rumored 25% to 37% price increase between N4 and N3E.
 
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