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ApostolCV
Joined: 26 May 2020
Posts: 207
Location: Ukraine
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 Posted: Sat Feb 27, 2021 9:14 am Post subject: ES/QS with features |
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Hello guys!
I want to get some statistics.
I''ll desided to gather some special information about Engenerin Samples of CPU.
I'm interested of ES CPU that have features that were not implemented
in release versions. Such like unlocked multiplier ,instructions and other.
Fore example QSRJ ES verison of 10600k have Instruction TSX, that in release version is disable.
So don't be lazy. Comment please. I wish you success  |
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xsecret
Joined: 01 Feb 2004
Posts: 1846
Location: France
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| Posted: Sat Feb 27, 2021 9:36 am Post subject: |
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Before all, you must understand the difference between ES and QS.
Technically, there is no "10600K ES". 10600K is a marketing name for a retail part. For example, QSRJ is an ES with no relation with the 10600K. The fact that it's clocked at the same speed or have the same cache is irrelevant. QSRJ is based on a die that was never released on a retail sku. There is hundreds - or sometimes thousands - of different ES like this one for every core (Comet Lake here), with slight or big differences on the stepping, core, fused-down features, etc.
While often also called "ES", QS are different because they generally have retail counterparts with exact same specs.
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Universal Chip Analyzer (UCA) : https://x86.fr/uca / http://www.cpu-world.com/forum/viewtopic.php?t=34349 |
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Wasmachineman_NL
Joined: 04 Jul 2019
Posts: 988
Location: Netherlands
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| Posted: Sat Feb 27, 2021 9:51 am Post subject: |
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| All Pentium 4 ES are unlocked IIRC |
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ApostolCV
Joined: 26 May 2020
Posts: 207
Location: Ukraine
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| Posted: Sat Feb 27, 2021 10:57 am Post subject: |
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| xsecret wrote: | Before all, you must understand the difference between ES and QS.
Technically, there is no "10600K ES". 10600K is a marketing name for a retail part. For example, QSRJ is an ES with no relation with the 10600K. The fact that it's clocked at the same speed or have the same cache is irrelevant. QSRJ is based on a die that was never released on a retail sku. There is hundreds - or sometimes thousands - of different ES like this one for every core (Comet Lake here), with slight or big differences on the stepping, core, fused-down features, etc.
While often also called "ES", QS are different because they generally have retail counterparts with exact same specs. |
Yes,i heard that QSRJ based on 8-core crystal. Probably it is Coffee Lake.
Old cry on new substrate....
This is another reason to be interested in this kind.
Thank you,Wasmachineman_NL. If I understood you correctly it's unlocked for lowering.  |
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Wasmachineman_NL
Joined: 04 Jul 2019
Posts: 988
Location: Netherlands
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| Posted: Sat Feb 27, 2021 11:21 am Post subject: |
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| ApostolCV wrote: |
Thank you,Wasmachineman_NL. If I understood you correctly it's unlocked for lowering. |
You don't need a ES CPU to lower the multiplier lol, production CPUs can also be lowered. For OCing however, P4 ESs are great. |
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wren4777
Joined: 13 Dec 2016
Posts: 571
Location: Litija, Slovenia
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| Posted: Sat Feb 27, 2021 11:39 am Post subject: |
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| xsecret wrote: |
While often also called "ES", QS are different because they generally have retail counterparts with exact same specs. |
I believe Comet Lake QS are also the exception to this rule, as QS chips have the 6.5.4 CPUID while retail chips are 6.5.5.
It's a bug, not a feature, but I also seem to remember certain P0-step Coffee Lake ES (QQBY/QQBZ/QQC0/QQM5/QQM6) having issues with a dying PCIE controller, which were mitigated (but not entirely fixed) in later Qspecs (QQZ4/QQZ5/QQZ6/QRA1/QRA2 respectively), without a denoted change in the stepping.
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lavrentii
Joined: 14 Feb 2021
Posts: 799
Location: Bulgaria
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| Posted: Sat Feb 27, 2021 3:57 pm Post subject: |
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| xsecret wrote: | ... There is hundreds - or sometimes thousands - of different ES like this one for every core (Comet Lake here), with slight or big differences on the stepping, core, fused-down features, etc.
... |
Surely, all those ES must be grouped on a much smaller number of wafers, since creating masks costs a lot of money, and manufacturing a wafer from start to finish takes time. After which I guess the dies are analyzed and new samples are made. I wonder how many such iterations are made, before a product is ready to be released commercially? |
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Gerwin
Joined: 10 Aug 2012
Posts: 63
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| Posted: Mon Mar 01, 2021 4:17 pm Post subject: |
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Halfway 1998 intel introduced a hard multiplier lock on Retail Pentium II. The newly arrived 'Celeron' got this too, no coincidence.
In case of an Intel Pentium III ES or the celeron versions: It can be multiplier locked or unlocked. It depends on the exact SSPEC model. Very sure of this. Same with QS. It is also possible ES does not run or malfunctions.
In case of an Intel Pentium 4 ES: I have only four ES, no QS, and less interest in testing. But my tests were: one was practically unlocked 12x to 21x. One was unlocked but only had two choices 14x and 15x. Two I could not get running on any other multiplier.
Later on the Intel CPUs got intel 'Speedstep' power saving and such. First in the mobiles, and soon also in desktop CPUs. Meaning they were multiplier adjustable downwards, in some way, to some degree.
In the above era AMD and VIA were less restrictive on their retail CPU multiplier settings. |
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