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

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Hitman928

Diamond Member
Apr 15, 2012
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Interesting test by PCWorld trying to compare efficiency between Strix, MTL, and Elite-X. In general, Elite-X wins in ST efficiency and Strix wins in MT efficiency. MTL is a not all that close 3rd place in both regards. The test they did that caught my eye, though, was one I haven't seen anyone else do. They ran a battery life test with the laptops connected to an external monitor and the laptop screen off. This may not be a super practical test as if you are hooked up to a monitor, most likely you'll have a plug for your laptop readily available (though I have seen this happen in business meetings), but the difference for the Strix laptop using the internal versus external monitor is extremely large and shows how much an OLED panel kills battery life in this test (he mentions that it's using a largely white screen through the test which is worst case scenario for OLED power consumption).

Additionally, the X-Elite laptop shockingly does worse with the external monitor than the internal one. I'm not sure what to make of that except that maybe connecting an external monitor fires up a power hungry display controller that uses more power than an IPS screen (at 200 nits) ? Anyway, crazy result. You can go through the whole video if you want below.





Edit: he had to run the external monitor on the Snapdragon using USB-C out on the Snapdragon due to no display ports on the laptop so it is powering up a high speed USB controller to get the external display. Still seems like too much power to more than offset the internal panel but he will test the other two the same way to see what results he gets. Also, X-Elite doesn't lose hardly any performance from plugged in to battery compared to Strix and MTL on the power plan they used. This means the X-Elite will perform better, but it's also using more power when taking the screens out of the equation.
 
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poke01

Platinum Member
Mar 8, 2022
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Additionally, the X-Elite laptop shockingly does worse with the external monitor than the internal one. I'm not sure what to make of that except that maybe connecting an external monitor fires up a power hungry display controller that uses more power than an IPS screen (at 200 nits)? Anyway, crazy result.
This is likely the case. Apple has really huge display controllers to combat such issues. Each one takes up more area than 4 P cores.

Display controllers are often overlooked in SoC designs but having a good one means less fan noise. some info on Apple display controllers.

Edit: https://social.treehouse.systems/@marcan/112094852797332616
 
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DavidC1

Golden Member
Dec 29, 2023
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We'll never see another Conroe jump as long as x86 is still produced on silicon.
Many people wrote and said it, the real loss is the gross mismanagement of the company that represents x86 - Intel corporation.

Saying it's the ISA merely confirms biases. It's not the main result. Had Intel leaders have the foresight to actually organically expand into other markets rather than zealously protecting short term profits at the detriment of everything else, then they wouldn't be in the dire straits they do today.

The government incompetence plus malice allowing x86 not be opened has faults too. Many, many times they gave Intel a win, when they should have been left to fend for themselves. Just like a fat slob refusing to change and friends/family coddling him, now Intel is actually under serious threat of disappearing into history.
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
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Many people wrote and said it, the real loss is the gross mismanagement of the company that represents x86 - Intel corporation.

Saying it's the ISA merely confirms biases. It's not the main result. Had Intel leaders have the foresight to actually organically expand into other markets rather than zealously protecting short term profits at the detriment of everything else, then they wouldn't be in the dire straits they do today.

The government incompetence plus malice allowing x86 not be opened has faults too. Many, many times they gave Intel a win, when they should have been left to fend for themselves. Just like a fat slob refusing to change and friends/family coddling him, now Intel is actually under serious threat of disappearing into history.
Zen 5 thread ??? Can we get back to that ????
 

jdubs03

Golden Member
Oct 1, 2013
1,079
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Why use a proxy when you have the actual scores? If Apple cores are twice as fast per clock but clocked half as fast then they have the same performance. The follow on is then which used the most power, so iyou use performance per watt. Ranking by performance per clock is..meaningless. Just means it targeted a different frequency in the design.
well, we know Apple uses the least amount of power. I made a post about it like a month ago and trying to determine how you normalize everything. I think it can be done, but it’s not easy. Decent amount of variables.

Nonetheless within microarchitecture (and some would say outside) it’s a quick way to tell. We know the ARM designs typically have less power draw anyways.
 

DavidC1

Golden Member
Dec 29, 2023
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Nonetheless within microarchitecture (and some would say outside) it’s a quick way to tell. We know the ARM designs typically have less power draw anyways.
Just read that Apple uses twice the size display block to save power on it.

The ARM guys hail from Smartphones where you want a mere 10WHr battery lasting 10 hours on it, so the design paradigm has to be completely different from the laptop, desktop focused ones.

Desktops nowadays have a literal brick for a cooling system, and some CPUs use much power as entire rating of power supplies 20 years ago. I mean seriously, you can take the heatsinks and build a structure with them if you tried. They are that big and heavy.

While they are saying they focus on laptops now, even then it's far far bigger than on Smartphones and many have actual active cooling. Saying it's an ISA problem is just a very lazy way of thinking.

ARM Smartphone = x86 Laptop
ARM Laptop = x86 Desktop

Order of magnitude difference in power consumption. They built their company around it, their culture around it, their mindset around it, and their tech around it.

I lived couple of years on a small solar setup. At the worst, I got less than 1KWHr per day. Average houses use 10KWHr easily. At 10x reduction your mentality of saving power changes completely. One cannot understand the other.

@Markfw Your beloved Zen 5 and AMD has the same overall mindset as Intel. I'd suggest to AMD if they want to survive they expand and look into mobile(Smartphone/Tablet) battery life and power envelopes. And they need to do that with not some separate low power(like Intel with Atom) but with future Zen chips.

David this is considered a callout and not a shout out. We don't allow callouts here. Only tag someone if it is for unambiguously positive reasons.

Mod DAPUNISER
 
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inquiss

Senior member
Oct 13, 2010
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354
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well, we know Apple uses the least amount of power. I made a post about it like a month ago and trying to determine how you normalize everything. I think it can be done, but it’s not easy. Decent amount of variables.

Nonetheless within microarchitecture (and some would say outside) it’s a quick way to tell. We know the ARM designs typically have less power draw anyways.
Just use performance per watt or absolute performance. Frequency is pointless. Zen 5 is a high frequency design. Apple isn't. So what. Performance of the processors is what matters.
 

jdubs03

Golden Member
Oct 1, 2013
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I think the point of the list when it comes down to it is like IPC, that’s why when Geekerwan does his charts he uses SpecInt and SpecFp and then divides by clock speed.
 

FlameTail

Diamond Member
Dec 15, 2021
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This is likely the case. Apple has really huge display controllers to combat such issues. Each one takes up more area than 4 P cores.

Display controllers are often overlooked in SoC designs but having a good one means less fan noise. some info on Apple display controllers.

Edit: https://social.treehouse.systems/@marcan/112094852797332616

A pair of display engines is about the size of a P-core.

A single Thunderbolt controller is about the size of a P-core.

FYI, the P-core in M3 is about 2.5 mm² (N3B).
 
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poke01

Platinum Member
Mar 8, 2022
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Intel and apple talk in a Zen 5 thread ???
I apologise for bringing it up. I thought it was relevant as the PC world video was talking about external monitors efficiency for Strix Point. we found that AMD really improved the display controllers on Strix Point. Just look at that amazing battery life. AMD always had trouble with excess power consumption when using external monitors, so there might reasons as why that's the case when looking at other designs. As long the comparison is relevant to the topic in this case Strix Point and it's direct competition I see it as fine, ( of course that's not my call to make).

Intel and Qualcomm struggle here and it's something that Lunar lake needs to fix if it aims to be an efficient x86 SoC vs Strix Point.
 

deasd

Senior member
Dec 31, 2013
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Japanese enthusiast enter the chat. Looks like KB5041587 provide a single digit boost in video encoding. Dunno the mechanism on it, maybe IRL productivity like this is affected by branch prediction revision


Windows Update KB5041587, which optimizes for Ryzen, has been released, so I decided to check its effectiveness.While svt-av1 increased speed by up to 9%, the effect on Cinebench and x264/x265 was minimal, but it seems to make a big difference in games, so if you're using Ryzen + Win11, it might be a good idea to update.


 

StefanR5R

Elite Member
Dec 10, 2016
6,057
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@Markfw Your beloved Zen 5 and AMD has the same overall mindset as Intel. I'd suggest to AMD if they want to survive they expand and look into mobile(Smartphone/Tablet) battery life and power envelopes. And they need to do that with not some separate low power(like Intel with Atom) but with future Zen chips.
Uhm, AMD is, for all intents and purposes, just entering the laptop market. Strix Halo is in the pipeline and will allegedly have an extra low power design of Zen cores. — However, are you aware of AMD's position in the industry with respect to performance per Watt in the datacenter? If not, perhaps ask @Markfw. His home is a datacenter, and AFAICT he cares quite a bit about getting the most computation out of the kWh he is paying for.

Edit: Extended the quote for more context.
 
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StefanR5R

Elite Member
Dec 10, 2016
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It looks like KB5041587 provide a single digit boost in video encoding. Dunno the mechanism on it, maybe IRL productivity like this is affected by branch prediction revision
While it plays a role how "branchy" the workload is, I presume the primary factor is how much the workload triggered Windows' obsolete vulnerability mitigations. That would be syscalls, context switches...? AFAIU. (Or, what else is going on on the system during a workload which itself might not trigger these mitigations a lot.)
 

Josh128

Senior member
Oct 14, 2022
511
865
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Many people wrote and said it, the real loss is the gross mismanagement of the company that represents x86 - Intel corporation.

Saying it's the ISA merely confirms biases. It's not the main result. Had Intel leaders have the foresight to actually organically expand into other markets rather than zealously protecting short term profits at the detriment of everything else, then they wouldn't be in the dire straits they do today.

The government incompetence plus malice allowing x86 not be opened has faults too. Many, many times they gave Intel a win, when they should have been left to fend for themselves. Just like a fat slob refusing to change and friends/family coddling him, now Intel is actually under serious threat of disappearing into history.
I wasnt saying its the ISA at all. Im saying its the physical and thermal limits of silicon, along with the current level of knowledge and interest in obtaining gains in CPU speed.
 

Abwx

Lifer
Apr 2, 2011
11,612
4,469
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Japanese enthusiast enter the chat. Looks like KB5041587 provide a single digit boost in video encoding. Dunno the mechanism on it, maybe IRL productivity like this is affected by branch prediction revision


He provided an interesting comparison , in CB R23 the 9950X@120W can match a 7950X at full power :

 

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Abwx

Lifer
Apr 2, 2011
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Looks more like 110-115W. But keep in mind this is with CO/CS undervolting in play. Thing about those is not all chips can attain the same max stable UV. Still very interesting.

At Computerbase the stock 7950X score 38649 pts, that s the reference i used for the 120W number, that being said in this comparison both chips have CO enabled, it s just that the 7950X dont benefit from CS, but it s not only undervolting as with 17% higher IPC the 9950X can clock 1.17x lower and this reduce power by 30% at isoperf, hence this advantageous curve.
 
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poke01

Platinum Member
Mar 8, 2022
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Uhm, AMD is, for all intents and purposes, just entering the laptop market. Strix Halo is in the pipeline and will allegedly have an extra low power design of Zen cores.
What does this even mean? AMD has been in the laptop market since ages. If anything Qualcomm and especially Apple are new in the laptop space with their own SoC designs. This space has long been dominated by Intel's shady deals with OEMs.

I'm interested to see how Strix Halo performs but it's mot exactly an efficiency focused design. If your referring to Halo being new then yes, this is AMD's first of its kind in laptop.
 

Thunder 57

Diamond Member
Aug 19, 2007
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What does this even mean? AMD has been in the laptop market since ages. If anything Qualcomm and especially Apple are new in the laptop space with their own SoC designs. This space has long been dominated by Intel's shady deals with OEMs.

I'm interested to see how Strix Halo performs but it's mot exactly an efficiency focused design. If your referring to Halo being new then yes, this is AMD's first of its kind in laptop.

Yea I read that and thought to myself did Renoir not exist?
 
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DavidC1

Golden Member
Dec 29, 2023
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I'm interested to see how Strix Halo performs but it's mot exactly an efficiency focused design. If your referring to Halo being new then yes, this is AMD's first of its kind in laptop.
They needed Lunarlake competitor like yesterday too. True, AMD's position is much better financially but it isn't a guarantee to last.

Lunarlake like platforms shouldn't be a one-off thing but a permanent, separate lineup for both Intel and AMD. And the future focus is looking at ways to lower that consumption further for better battery life.

Moore's Law advancements is said to be "Delaying" the inevitable forever. Well, that kind of relentless advancement should be applied to battery life too. Should get better until it absolutely can't.
 

StefanR5R

Elite Member
Dec 10, 2016
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Uhm, AMD is, for all intents and purposes, just entering the laptop market. Strix Halo is in the pipeline and will allegedly have an extra low power design of Zen cores.
What does this even mean? AMD has been in the laptop market since ages. If anything Qualcomm and especially Apple are new in the laptop space with their own SoC designs. This space has long been dominated by Intel's shady deals with OEMs.
Yea I read that and thought to myself did Renoir not exist?
I admit to a bit of hyperbole. But as @poke01 hinted, to enter anywhere, you need to be let in. (Until not so long ago, AMD, despite having decent laptop SoCs and knowing a thing or two about SoC power management, were almost completely relegated to the cheap end of the laptop market and even there the selection of laptop designs wasn't quite big. The incumbent leveraging his market position at and beyond the fine line of legality is one thing; another, among more, is the extent of technical support to ODMs. Not that I knew details of the latter myself, just going by what others said on it.) The now increasing range of AMD laptop designs is what I had in mind when I stated they "are just entering" the market.

Apple, as a CPU maker, is newer to the laptop market than AMD indeed. However, the dynamics of their entry are not easily comparable, as they are in a mutually exclusive deal with the single maker of Macintosh computers, mobile and otherwise.

I'm interested to see how Strix Halo performs but it's mot exactly an efficiency focused design. If your referring to Halo being new then yes, this is AMD's first of its kind in laptop.
I referred to it because the post which I responded to suggested to AMD to extend Zen to "low power chips". While Strix Halo is obviously not going to be a "low power chip" when actually utilized, it a) allegedly will feature new very low power cores, b) certainly will enable low idle/near-idle power use despite its aggregated high-performance design, thanks to its packaging tech.
 

Josh128

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Oct 14, 2022
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