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Arm unveils 7nm Cortex-A76 CPU

anandtech.com

1–10 of 67 posts

Re: Arm unveils 7nm Cortex-A76 CPU

#3
I wanna see a realistic benchmark that compares it against intel's x86 i"X" (6th, 7th, 8th gen) to decide if it can be called a laptop class processor in first place... BTW, it's interesting to see how good apple is in designing their custom Arm processors.

Re: Arm unveils 7nm Cortex-A76 CPU

#4
post #2

So the newest Cortex will roughly match the 2016 Apple A10 CPU? No wonder so many android tablets are painfully slow...

I think apple had this huge lead when they introduced x64 out of the blue. Over time other players will catch up, I guess. But yeah, apple's engineering team have been doing an excellent job. I'm excited about google's inclusion though. They already make great tpu's.

Re: Arm unveils 7nm Cortex-A76 CPU

#5
post #3

I wanna see a realistic benchmark that compares it against intel's x86 i"X" (6th, 7th, 8th gen) to decide if it can be called a laptop class processor in first place... BTW, it's interesting to see how good apple is in designing their custom Arm processors.

My current laptop is a cheap Dell from 2015. It contains an unimpressive Celeron N2840 @2.16GHz but it is surprisingly usable for Web and office tasks and very low power (I never hear the fan). So I think you should also benchmark it against current Celerons (N3710).

Re: Arm unveils 7nm Cortex-A76 CPU

#6
post #3

I wanna see a realistic benchmark that compares it against intel's x86 i"X" (6th, 7th, 8th gen) to decide if it can be called a laptop class processor in first place... BTW, it's interesting to see how good apple is in designing their custom Arm processors.

> it's interesting to see how good apple is in designing their custom Arm processors.

ooh, probably because apple acquired a company called pa-semi (300m iirc) which had a bunch of cpu dudes doing power-efficient chips for quite a while...

Re: Arm unveils 7nm Cortex-A76 CPU

#7
post #6
post #3

I wanna see a realistic benchmark that compares it against intel's x86 i"X" (6th, 7th, 8th gen) to decide if it can be called a laptop class processor in first place... BTW, it's interesting to see how good apple is in designing their custom Arm processors.

> it's interesting to see how good apple is in designing their custom Arm processors. ooh, probably because apple acquired a company called pa-semi (300m iirc) which had a bunch of cpu dudes doing power-efficient chips for quite a while...

Looking online about this company. Apple has acquired pa-semi for $278m in 2008 which translated in having the fasted arm processor by a wide margin a decade later, definitely paid out very well.

Re: Arm unveils 7nm Cortex-A76 CPU

#8
post #3

I wanna see a realistic benchmark that compares it against intel's x86 i"X" (6th, 7th, 8th gen) to decide if it can be called a laptop class processor in first place... BTW, it's interesting to see how good apple is in designing their custom Arm processors.

My current laptop is a cheap Dell from 2015. It contains an unimpressive Celeron N2840 @2.16GHz but it is surprisingly usable for Web and office tasks and very low power (I never hear the fan). So I think you should also benchmark it against current Celerons (N3710).

On paper, your Celeron is specified to run at 6 W max[1], and of course has 4 cores; that's 1.5 W/core.

The AnandTech article says[2] that the new Cortex-A76 can run with a power budget of 750 mW/core, which is exactly half of the Celeron's, then.

[1] https://ark.intel.com/products/91830/Intel-Pentium-Processor...

[2] https://www.anandtech.com/show/12785/arm-cortex-a76-cpu-unve...

Re: Arm unveils 7nm Cortex-A76 CPU

#9
post #2

So the newest Cortex will roughly match the 2016 Apple A10 CPU? No wonder so many android tablets are painfully slow...

I think apple had this huge lead when they introduced x64 out of the blue. Over time other players will catch up, I guess. But yeah, apple's engineering team have been doing an excellent job. I'm excited about google's inclusion though. They already make great tpu's.

Pretty sure you meant ARM64 not x86 :)

But yeah, the SoC in the iPhone 5S was crazy fast at the time, plus they have other advantages like Secure Enclave, and a smartwatch with ACTUAL all day battery life. I owned a Sony phone with a Snapdragon 810, which was Qualcomm's first high-end 64-bit chip... and it overheated at the drop of a hat. The phone was more or less unusable in Australian summer. Everything I read at the time indicated that Apple really caught the rest of the industry off guard.

Even Wikipedia puts it pretty bluntly:

"The first 64-bit SoCs, the Snapdragon 808 and 810, were rushed to market using generic Cortex-A57 and Cortex-A53 cores and suffered from overheating problems and throttling, particularly the 810, which led Samsung to stop using Snapdragon for its Galaxy S6 flagship phone."

Re: Arm unveils 7nm Cortex-A76 CPU

#10
post #8

Earlier quoted context omitted.

My current laptop is a cheap Dell from 2015. It contains an unimpressive Celeron N2840 @2.16GHz but it is surprisingly usable for Web and office tasks and very low power (I never hear the fan). So I think you should also benchmark it against current Celerons (N3710).

On paper, your Celeron is specified to run at 6 W max[1], and of course has 4 cores; that's 1.5 W/core. The AnandTech article says[2] that the new Cortex-A76 can run with a power budget of 750 mW/core, which is exactly half of the Celeron's, then. [1] https://ark.intel.com/products/91830/Intel-Pentium-Processor... [2] https://www.anandtech.com/show/12785/arm-cortex-a76-cpu-unve...

How does it translate in terms of performance in day to day tasks. I mean browsing, using productivity apps (etc). Do you think the extra instructions found on x86 can actually compensate the power hungry. Therefore, making x86 a more efficient architecture ?
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