Discussion Future ARM Cortex + Neoverse µArchs Discussion

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soresu

Platinum Member
Dec 19, 2014
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ARM surpasses the market cap of Intel


The symbolism is deep.
Take a long, hard look at the insanity of Tesla's market practices and compare it to their even more insane market cap.

The stock market really isn't a viable barometer for this stuff.

IMHO it's a foundation for the biggest and longest financial con game in the history of modern civilisation.
 
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poke01

Golden Member
Mar 8, 2022
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Take a long, hard look at the insanity of Tesla's market practices and compare it to their even more insane market cap.

The stock market really isn't a viable barometer for this stuff.

IMHO it's a foundation for the biggest and longest financial con game in the history of modern civilisation.
Rather look at the balance sheet and financials
 

FlameTail

Diamond Member
Dec 15, 2021
3,137
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Is Cortex X925 a clean sheet/ground up new design?

With the 2024 IP, the X core's codename is no longer related to the A7xx core.
 

Nothingness

Platinum Member
Jul 3, 2013
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Based on the Software Optimization Guide for X925.

Instructions are first fetched and then decoded into internal Macro-OPerations (MOPs). From there,
the MOPs proceed through register renaming and dispatch stages. A MOP can be split into two
Micro-OPerations (µOPs) further down the pipeline after the decode stage. Once dispatched, µOPs
wait for their operands and issue out-of-order to one of 23 issue pipelines. Each issue pipeline can
accept one µOP per cycle.

The dispatch stage can process up to 10 MOPs per cycle and dispatch up to 20 µOPs per cycle
 

Doug S

Platinum Member
Feb 8, 2020
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That is certainly an ambitious design! Maybe the plan is to sort of "grow into it" over a few iterations, so they have a list of bottlenecks on X5 and they cross a few off the list with X6, and so forth.

Alternatively it is too ambitious, and some of the bottlenecks simply can't be fixed because they are inherent to a design so wide. Guess we'll find out.
 

adroc_thurston

Diamond Member
Jul 2, 2023
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Yeah ironically it sounds like A725 has more interesting features than X925 despite being on the lower performance tier.
Yeah, A725 looks pretty good after A710/715 and kinda A720 were mid.
Especially A710, that was less efficient than A78 which is rofl.

Now somebody please taze ARM into making a proper OoO LITTLE.
Very long overdue.
 

SpudLobby

Senior member
May 18, 2022
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A7xx is effectively becoming the Little core based on ARM's own PR.
On N4 an A715 is about 2x less efficient than an N3 Apple E core when clocked down and at the same perf (platform power).

Is that bad? I mean sure. But AMD and Intel can’t do better than that at all for the area and energy, so it’s Apple’s E Cores at home. Good news for MediaTek tbh.

TBD on Oryon’s in 8 Gen 4.
 

soresu

Platinum Member
Dec 19, 2014
2,939
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They had A65 once but that died with no apparent successor.
I heard it was co produced by some different Chandler design team that had never been mentioned before.

For sure it was extremely odd to have gone in that direction only to change again for E2/A510.
 

soresu

Platinum Member
Dec 19, 2014
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Looking on the ARM website it seems Chandler is still a thing, so no idea what they are doing at the moment.
 
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