Discussion Future ARM Cortex + Neoverse µArchs Discussion

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SarahKerrigan

Senior member
Oct 12, 2014
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The X series was initially advertised as a possible path to semi custom cores, so it's not impossible that some OEMs are doing this.

That's really not what the "Cortex-X Custom Program" meant - rather, it referred to OEM involvement in defining the cores. The "Custom" part was relative to Cortex-A.

I have seen absolutely zero indication of ARM allowing microarchitectural changes by licensees to flagship Cortex-X or Cortex-A designs.
 

SarahKerrigan

Senior member
Oct 12, 2014
540
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Sooooo it was just an offer to allow OEMs to rebrand them?

Wasn't Qualcomm already doing that by calling them "Kryo" anyway?

It was a little more than that, but certainly none of it involved "customers get RTL that they can mess with as they wish."

Basically it was a loud way of saying "we have some large smartphone customers and we are developing cores with heavy input from them on requirements", AFAIK. Not much different from Built on Cortex (which is what allowed Qualcomm to call ARM cores "Kryo" to the best of my knowledge.)
 

FlameTail

Platinum Member
Dec 15, 2021
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Does ARM give a notice/pre-announcement before their actual IP announcements? Or does it happen out of the blue?
 

FlameTail

Platinum Member
Dec 15, 2021
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Well, X5 should deliver a >16% IPC uplift, if ARM's statements are true. can't wait
16% is mediocre.

It needs to be >30%.

It's totally possible.

X5 will be there first cleansheet design since Cortex A76, and the addition of SME alone (as per rumours) will bring a ~10% PPC increase in GB6.
 

Tup3x

Golden Member
Dec 31, 2016
1,001
986
136
16% is mediocre.

It needs to be >30%.

It's totally possible.

X5 will be there first cleansheet design since Cortex A76, and the addition of SME alone (as per rumours) will bring a ~10% PPC increase in GB6.
Mmm... Assuming zero increase in clock speed. However, if X5 clocks higher then mediocre IPC increase would be fine
 

hemedans

Senior member
Jan 31, 2015
207
102
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THAT EXPLAINS IT.

They put out a new core only once every 2 years, and that too with mediocre improvements!
Cortex A53 - 2012
Cortex A55 - 2017
Cortex A510 - 2021
Cortex A520 - 2023

Most of time it's more than 2 years.

I haven't seen deep review of A520 but it looks good, sd 8 gen 3 crush almost all midrange in terms of battery life.
 
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