Question Intel Mont thread

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DZero

Senior member
Jun 20, 2024
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Leaving fantasy land, we do know that a few things are in play:
Intel is going to begin to retire processors from Intel 7 (alder/raptor) so there will be excess capacity there. Intel does not currently have an Intel 3 based IMC design/implementation. They aren't going to invest the money in making one for an N-series processor.

Skymont, as implemented, only exists on expensive TSMC logic. They won't pay for an N series chip on a leading TSMC node. We won't see a Skymont N series product any time soon, or possibly ever.

What we will see is an N series refresh of the current Alder Lake based product. You might get higher clocks, but that's about it. I would not be shocked if they used the 4 X 4 Crestmont cluster from Raptor Lake in a 16 e-core embedded product.
You are right, I totally forgot that detail!
Unless TSMC offers a discount for that in order to not to let Intel to use their foundries.
 

Kosusko

Member
Nov 10, 2019
194
175
116
Atom Skymont vs Zen5c

8c/8T Atom Skymont 3.6GHz - 4.6GHz (Intel Core Ultra 5 245K (14C/14T, 125-159W)
• CPU Multi Thread : 6 005,09 (+13,46%)
• CPU Single Thread : 753,2 (+45,13%)


8c/16T Zen5c 2.0GHz - 3.3GHz (AMD Ryzen AI 9 HX 370 12C/24T, 15-54W)
• CPU Multi Thread : 5 294 (88,15%)
• CPU Single Thread : 519 (68,91%)


source: https://diit.cz/clanek/recenze-intel-core-ultra-5-245k-aneb-levnejsi-arrow-lake-v-akci
source: https://diit.cz/clanek/preview-asus-zenbook-s16-s-amd-ryzen-ai-9-hx-370-je-v-redakci
 

controlflow

Member
Feb 17, 2015
188
325
136
@Kosusko
3.6GHz - 4.6GHz @ 125-159W vs. 2.0GHz - 3.3GHz @ 15-54W?
That's quite the silly comparison.
125W and 159W are just the TDP and PL2 of a complete 245K CPU. Obviously, it will be much lower power if the CPU is running with the P cores disabled.

You really need the actual power consumption of both during that workload to draw a conclusion.

Regardless, SKT winning in MT while having just 8C/8T and being such a compact core is pretty solid.
 

Hulk

Diamond Member
Oct 9, 1999
4,701
2,863
136
I'd like to see a 4 cluster Skymont (16 core) cpu. What's the point of Lion Cove in mobile? Ultra mobile frequency tops out below 5GHz in real world usage and Skymont can do that with much better area efficiency compared to Lion Cove. Even at 3.5GHz such a part would do 20,000 CB R23 MT.
 
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adroc_thurston

Diamond Member
Jul 2, 2023
3,793
5,489
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What's the point of Lion Cove in mobile?
ST perf.
Ultra mobile frequency tops out below 5GHz in real world usage
Is this real world usage with us in the room.
Even at 3.5GHz such a part would do 20,000 CB R23 MT.
Turns out mobile chips are for anything but cinememe.
They tend to do stuff like web browsing and all. Stuff that needs a big core with maximum 1t perf available.
 

Hulk

Diamond Member
Oct 9, 1999
4,701
2,863
136
ST perf.

Is this real world usage with us in the room.

Turns out mobile chips are for anything but cinememe.
They tend to do stuff like web browsing and all. Stuff that needs a big core with maximum 1t perf available.
Think about it some more. I'll give you a hint, when you remove LNC clock speed advantage (mobile) LNC has very little IPC over Skymont, but is over 3 times larger.
 
Jul 27, 2020
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LNC has very little IPC over Skymont, but is over 3 times larger.
Were it not for their internal politics, they could've gone with Skymont Big and Skymont Little, the former optimized for hitting 5.5 GHz and the latter for conserving power, using the relevant transistor libraries.

This seems to be Lisa's strength. She kicks out people who play politics (like Raja Koduri).
 
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Gideon

Golden Member
Nov 27, 2007
1,842
4,378
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Think about it some more. I'll give you a hint, when you remove LNC clock speed advantage (mobile) LNC has very little IPC over Skymont, but is over 3 times larger.
Were it not for their internal politics, they could've gone with Skymont Big and Skymont Little, the former optimized for hitting 5.5 GHz and the latter for conserving power, using the relevant transistor libraries.

Yeah, if the next small core really only needs to do just one of the 2 things:

1. Provide a 10% bigger IPC uplift than the Lion Cove successor (say 20% vs 10%)
2. Clock to ~5.5 Ghz in a "bigger core" format

If it does any of that (and Intel should already know the simulated performance of both), there is absolutely no techical reason to keep the big core around anywhere but some exotic Server (and perhaps desktop or HEDT) SKUs that need AVX-512, HT, etc ...
 

Saylick

Diamond Member
Sep 10, 2012
3,644
8,222
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Think about it some more. I'll give you a hint, when you remove LNC clock speed advantage (mobile) LNC has very little IPC over Skymont, but is over 3 times larger.
No core should be 3x the size just to hit 25% more clocks. I'm sure if you gave the E core team just 2x the transistor budget, not even 3x, they'd be able to beat LNC handily in all metrics.
 

DavidC1

Golden Member
Dec 29, 2023
1,211
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No core should be 3x the size just to hit 25% more clocks. I'm sure if you gave the E core team just 2x the transistor budget, not even 3x, they'd be able to beat LNC handily in all metrics.
Skymont is a good effort, but it needs to do better. It needs to be in ballpark of ARM.

So Arctic Wolf being 1.3x perf/clock with 1.3x power and area will do that. Then the successor to that needs to do another 1.3x on top of that, and once that is achieved, expand it to get it higher.

Why not now? Because the limits placed on the design forces them to be efficient. Transistor efficient, area efficient, power efficient. Maximize that efficiency first.
 
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