Discussion ARM Cortex/Neoverse IP + SoCs (no custom cores) Discussion

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jdubs03

Golden Member
Oct 1, 2013
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I think Apple will focus more on uarch this year. If there was a year to do it for them it’s this year.
 

soresu

Diamond Member
Dec 19, 2014
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That is a question I made, the reason is that there is already A320.

A320 is like the v9-A equivalent to A5 in the v7-A generation, or A32 in the v8-A generation.

It's meant to be the lowest power core possible without dropping to microcontrollers which AFAIK have a reduced or different featureset.
 

soresu

Diamond Member
Dec 19, 2014
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A320 is likely to go into wearables and higher power embedded use cases, while A5xx is (post A7xx efficiency core branding) for STBs, streaming dongles etc.

They aren't intended for the same markets, so A3xx µArch has nothing to do with A5xx beyond likely being a baseline before it was stripped down to bare minimum in area/power while retaining as much IPC as possible.
 

soresu

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Dec 19, 2014
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Something I missed a week ago is that the Cortex branding appears to be going away in favor of new brandings for different market segments.


Lumex appears to be for mobile/tablets, Niva is for PCs (likely including laptops).

Other new brandings like Zena and Orbis are for auto (former AE type) and embedded markets.

It also appears that the old Axxx and Xnnn naming schemes for CPU core IPs are going away in favor of Ultra, Premium, Pro, Nano, and Pico.

Pico likely replaces the M for microcontrollers.

That would almost certainly make Travis/X930 the Ultra core for the 2025 IP, though no word about numbering for that.

If the rumors about Alto/X930 are true it might be Premium, with Gelas/A730 as Pro and Nevis/A530 as Nano.

Mali/Immortalis GPU branding seems to be unaffected by this change.

There's nothing about the actual ISA naming changing, so it should still be v9-A.
 
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DZero

Golden Member
Jun 20, 2024
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Something I missed a week ago is that the Cortex branding appears to be going away in favor of new brandings for different market segments.


Lumex appears to be for mobile/tablets, Niva is for PCs (likely including laptops).

Other new brandings like Zena and Orbis are for auto (former AE type) and embedded markets.

It also appears that the old Axxx and Xnnn naming schemes for CPU core IPs are going away in favor of Ultra, Premium, Pro, Nano, and Pico.

Pico likely replaces the M for microcontrollers.

That would almost certainly make Travis/X930 the Ultra core for the 2025 IP, though no word about numbering for that.

If the rumors about Alto/X930 are true it might be Premium, with Gelas/A730 as Pro and Nevis/A530 as Nano.

Mali/Immortalis GPU branding seems to be unaffected by this change.

There's nothing about the actual ISA naming changing, so it should still be v9-A.
Don't forget A320, that's Pico.

So Nano and Pico are In Order cores?
 

soresu

Diamond Member
Dec 19, 2014
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Don't forget A320, that's Pico.
Possibly, but I wouldn't bet on it.

Pico should be extremely low power in the range of µW's, which is largely the microcontroller power regime.

A320 should be pretty low power, but more in the range of tens of mW's.

Last I heard A5x/5xx was supposed to be in the range of 100-250 mW's.
 
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soresu

Diamond Member
Dec 19, 2014
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So Nano and Pico are In Order cores?
Certainly Pico I'd imagine will remain InO.

But going forward I wouldn't be surprised to find ARM using one of those hybrid Ino/OoO µArchs I mentioned from research papers over the last 10-16 years.

Like slice out of order (sOoO) in the A5xx segment.

If they can realise the claims of those research papers in a production CPU µArch we could see some serious perf/watt gains in lower end cores.
 

jdubs03

Golden Member
Oct 1, 2013
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Should be getting a press release in the coming week if we go by the release from last year.
 

soresu

Diamond Member
Dec 19, 2014
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Should be getting a press release in the coming week if we go by the release from last year.
I thought the same a week ago, but during the Computex presentation ARM's CEO said "later in the year", so it may be later than usual for them this time around.
 

DZero

Golden Member
Jun 20, 2024
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I thought the same a week ago, but during the Computex presentation ARM's CEO said "later in the year", so it may be later than usual for them this time around.
Imagine if in that period Qualcomm, Apple and Huawei launches their next iteration reducing the hype of stock ARM processors.
 
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