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

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Abwx

Lifer
Apr 2, 2011
11,003
3,601
136

sigh, AMD Hawk Point sucks for tablets, this tablet also has a fan and has heating problems despite having enough heatpipes. I heard this song and dance before but Zen 5 really needs to excel in tablets/thin n lights.

The idle usage is 10W! and battery life is pathetic.
It is not, because on a 51Wh battery it last 8.8h when idle, this amount to 5.8W idle, so the issue is both the implementation as well as the power adapter that seems to have an ineficient power factor correction circuitry because power at the main is about 15W when idle.
 
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poke01

Senior member
Mar 8, 2022
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It is not, because on a 51Wh battery it last 8.8h when idle, that amount to 5.8W idle, so the issue is both the implementation a well as the power adapter that seems to have an ineficient power factor correction circuitry because power at the main is about 15W when idle.
I do think its is on the low side for a tablet on a 51Wh battery. Hawk Point wasn't the right choice here. I would say anthing over 15hrs on idle is good.
 

Abwx

Lifer
Apr 2, 2011
11,003
3,601
136
I do think its is on the low side for a tablet on a 51Wh battery. Hawk Point wasn't the right choice here. I would say anthing over 15hrs on idle is good.
With a comparable battery and a 7840U, wich is basically the same APU, a Lenovo laptop last 12h on Wifi websurfing, not just idling, so the bios or power management used by Framework is somewhat not up to the device, or possibly a power hungry screen.

 

Hail The Brain Slug

Diamond Member
Oct 10, 2005
3,176
1,519
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With a comparable battery and a 7840U, wich is basically the same APU, a Lenovo laptop last 12h on Wifi websurfing, not just idling, so the bios or power management used by Framework is somewhat not up to the device, or possibly a power hungry screen.

Kind of weird they measured an average idle of 5.6 watts then go on to show 12h battery life in a web surfing (not idle) test, which even if it was the same power consumption as idle at 5.6W it would require a 67Wh battery.
 

Abwx

Lifer
Apr 2, 2011
11,003
3,601
136
Kind of weird they measured an average idle of 5.6 watts then go on to show 12h battery life in a web surfing (not idle) test, which even if it was the same power consumption as idle at 5.6W it would require a 67Wh battery.
It goes down to 3.3W, and dont forget the adaptator losses as very few have below 3W idle power, that s the typical power drained by a quality AC adaptator when unplugged from the laptop, so the numbers makes sense, BTW best 70W adaptator i had drained 1.8W idling, and that s after i moded its power factor correction circuity.
 
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poke01

Senior member
Mar 8, 2022
750
744
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Gideon

Golden Member
Nov 27, 2007
1,653
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Ok, what happens to gaming focused CPUs then, starting from Zen 6 and onwards?

You mentioned that Zen 6 desktop is only getting same silicon as mobile (aka APUs).

I'd be very surprised (to put it mildly) if AMD kills its popular high-cache gaming CPU lineup. Especially as Intel is rumored to respond with similar SKUs at some point.

So if L3 V-cache chiplets are EOL, this can only mean System Level Cache (SLC). On premium parts that could be on a chiplet *below* the cores, as is done on MI300 and (probably not but) possibly on Strix Halo.

So which is it for Zen 6?

  1. V-cache will remain on high end chiplet parts
  2. Will be replaced by MALL of similar size
  3. AMD kills off the entire (v-cache) consumer segment
 

uzzi38

Platinum Member
Oct 16, 2019
2,648
6,078
146
Ok, what happens to gaming focused CPUs then, starting from Zen 6 and onwards?

You mentioned that Zen 6 desktop is only getting same silicon as mobile (aka APUs).

I'd be very surprised (to put it mildly) if AMD kills its popular high-cache gaming CPU lineup. Especially as Intel is rumored to respond with similar SKUs at some point.

So if L3 V-cache chiplets are EOL, this can only mean System Level Cache (SLC). On premium parts that could be on a chiplet *below* the cores, as is done on MI300 and (probably not but) possibly on Strix Halo.

So which is it for Zen 6?

  1. V-cache will remain on high end chiplet parts
  2. Will be replaced by MALL of similar size
  3. AMD kills off the entire (v-cache) consumer segment
You're looking at the wrong mobile part.

Strix Halo is probably a better glimpse as to where the future of desktop lies. Albeit I imagine a future desktop part would run a much smaller IOD with a much smaller iGPU than STX-Halo will have, the fundamentals will probably be the same.
 

leoneazzurro

Senior member
Jul 26, 2016
933
1,478
136
You're looking at the wrong mobile part.

Strix Halo is probably a better glimpse as to where the future of desktop lies. Albeit I imagine a future desktop part would run a much smaller IOD with a much smaller iGPU than STX-Halo will have, the fundamentals will probably be the same.
I think Zen6 server version will have extra cache versions for sure. Desktop, it depends on how competitive Intel will be. But, with a more "exotic" package they probably can add cache in different ways, not only stacked on top (which limits the thermals). If they need additional cache, they may stack on the bottom or as an additional tile.
 

Gideon

Golden Member
Nov 27, 2007
1,653
3,738
136
You're looking at the wrong mobile part.

Strix Halo is probably a better glimpse as to where the future of desktop lies. Albeit I imagine a future desktop part would run a much smaller IOD with a much smaller iGPU than STX-Halo will have, the fundamentals will probably be the same.

Yeah that's what i thought.

I think Zen6 server version will have extra cache versions for sure. Desktop, it depends on how competitive Intel will be. But, with a more "exotic" package they probably can add cache in different ways, not only stacked on top (which limits the thermals). If they need additional cache, they may stack on the bottom or as an additional tile.

Hopefully we do get the cache below the compute chiplet, as that would still keep it physically close and should allow the CPU cores to clock a bit higher than they do on the V-cache parts.
 

Joe NYC

Platinum Member
Jun 26, 2021
2,011
2,428
106
You're looking at the wrong mobile part.

Strix Halo is probably a better glimpse as to where the future of desktop lies. Albeit I imagine a future desktop part would run a much smaller IOD with a much smaller iGPU than STX-Halo will have, the fundamentals will probably be the same.

One thing I am surprised about is that AMD is not leveraging 6nm node for IO, cache and memory controllers in Strix Halo. There would be less of a concern about the size of SLC.

Maybe AMD is not counting on a huge volume of sales to economize on die costs... Or, perhaps, the power overhead might still be too much for a mobile part, even if it is a fanout / RDL.
 

BorisTheBlade82

Senior member
May 1, 2020
664
1,015
136
One thing I am surprised about is that AMD is not leveraging 6nm node for IO, cache and memory controllers in Strix Halo. There would be less of a concern about the size of SLC.

Maybe AMD is not counting on a huge volume of sales to economize on die costs... Or, perhaps, the power overhead might still be too much for a mobile part, even if it is a fanout / RDL.
Why do you think that the IOD of Halo will not be 6nm? Is it already more or less confirmed to be N4 because of the iGPU part?
 

adroc_thurston

Platinum Member
Jul 2, 2023
2,328
3,146
96
if amd wants, strix halo could have em, they could even switch to 8 3dvcache cores and 16 zen5c cores
no and no?
It uses a bespoke CCD made for itself. alone.
i would bet so, there isn't another io part, and usually io is paired with gpu in these cases, also that would help with ram oc in the future
a) the node.
b) you can't touch the DDR straps on -halo.
 

adroc_thurston

Platinum Member
Jul 2, 2023
2,328
3,146
96
i haven't read anyone needing firmware blobs to overclock ram on ddr or lpddr laptops
Oh wow. lmao.
so i'm not really sure what you are talking about
You really don't know how AMD SMUs and IMC fw init works huh.
you think you are better than kepler or other leakers
We're all good friends, kiddo.
what are you
good question.
bespoke amd worker that leaks stuff and likes weird anime songs
I don't even work with them directly.
 
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