Groups > alt.comp.os.windows-11 > #28947

Re: P cores and E cores

From	Andy Burns <usenet@andyburns.uk>
Newsgroups	alt.comp.os.windows-11
Subject	Re: P cores and E cores
Date	2026-01-03 00:33 +0000
Message-ID	<mrr6epF6hv2U1@mid.individual.net> (permalink)
References	<mojk7vFp2nbU1@mid.individual.net> <mrqtjoF53t9U1@mid.individual.net>

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Brian Gregory wrote:

> Andy Burns wrote:
> >> On a Win11 machine with an i5-1335U (2x P cores with hyperthreading,
>> and 8x E cores without HT)
>>
>> For manually setting CPU affinity, is it guaranteed that CPU0 to CPU3 
>> are the P cores and CPU4 to CPU11 are E cores?
> 
> I don't know but on my Win 11 with 12th gen Intel PC it's the same, P 
> cores starting from 0 then E cores.
Thanks, spent a couple of days messing with CPU affinity and using Intel 
extreme tuning utility (just for monitoring) and although the software 
seemed to be dividing it's load over multiple cores wuite well, it was 
hitting thermal throttling and quite soon afterwards power throttling, 
making it run choppily.

Hoping to re-test on Core Ultra 5 instead of Core i5 soon ... more P 
cores and no hyperthreading at all ...

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Thread

P cores and E cores Andy Burns <usenet@andyburns.uk> - 2025-11-24 17:50 +0000
  Re: P cores and E cores Paul <nospam@needed.invalid> - 2025-11-25 02:32 -0500
    Re: P cores and E cores Andy Burns <usenet@andyburns.uk> - 2025-11-25 09:49 +0000
  Re: P cores and E cores Brian Gregory <void-invalid-dead-dontuse@email.invalid> - 2026-01-02 22:02 +0000
    Re: P cores and E cores Andy Burns <usenet@andyburns.uk> - 2026-01-03 00:33 +0000

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