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ApostolCV
Joined: 26 May 2020
Posts: 207
Location: Ukraine
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 Posted: Tue May 25, 2021 9:52 am Post subject: Haswell and ECC |
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Today i surfing internet and find something strange like joke from Intel.
I searched for G3460 specification and was amazed to see that hypotheses it
supported ECC memory.
The same for other Pentium dual-core models...
For example:https://ark.intel.com/content/www/ru/ru/ark/products/82723/intel-pentium-processor-g3258-3m-cache-3-20-ghz.html
or https://ark.intel.com/content/www/ru/ru/ark/products/83428/intel-pentium-processor-g3460-3m-cache-3-50-ghz.html
Look's like a fake ECC memory support is Xeons feature.
Someone test it? |
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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| Posted: Tue May 25, 2021 1:49 pm Post subject: |
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Situation with ECC support with desktop CPUs are very complicated and obscured by Intel (e.g. ark and datasheets contradict each other).
For Haswell it's known that at least some of the Celerons, Pentiums and i3s do support ECC (with suitable motherboards and only (?) server chipsets), but i5/i7 are not.
Later with Skylake and beyond they entirely segmented ECC out of desktop it seems. |
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ApostolCV
Joined: 26 May 2020
Posts: 207
Location: Ukraine
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| Posted: Tue May 25, 2021 2:09 pm Post subject: |
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I find article about Pentium G4500 and using it with supermicro mb and ECC memory.
So it can be true that Haswell's Pentiums can use ECC.
Not sure. |
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Calbris
Joined: 06 Feb 2019
Posts: 157
Location: Singapore
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| Posted: Tue May 25, 2021 2:47 pm Post subject: Re: Haswell and ECC |
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Interesting topic. As far as I know, this went back all the way to Clarkdale, quite the odd one.
| lihan su wrote: | I worked at Intel Germany at that time of the release of Clarkdale processors and got
trained by intel for business customer support.
The Intel i5-650, 660, 670 have all ECC support with 3420 chipset
- if the mainboard manufacturer did "integrate" the support in their bios.
Even Intel offered their own DQ52TML Board with special "ECC support" realized with Q55 Chipset - this is also stated in the Manual and press datasheets.
I gave support to hundreds of business SOHO customers which "bought & used" i5-6x0 with AES and ECC in business servers or storage servers. I worked at Intel at that time!
Many people like you claim the "ecc-but-not-ecc" myth but in this case its
really "real ecc" with i5 650 and 3420 chipset (only if manufacturer of mainboards integrated it! supermicro X8SIL does only support it with rev 1.02 plus bios update).
Intel use to state that i3-2100 supports ECC and later "hide" that fact not to harm xeon e3 sales. For socket 1156 the problem was AES was not available in xeon processor and so Intel needed i5 with AES also supporting ECC. It was just a "temporal bridge product" until the next generation socket for servers was ready. |
This statement came from: https://www.truenas.com/community/threads/hardware-recommendation-needed.25051/ It seems to be correct as well: https://mywiredhouse.net/blog/i5-650-with-ecc-support/
A datasheet that mentions the Celeron and Pentium Clarkdale processors show that they all support ECC, with a 3420 PCH: https://www.nec.com/en/global/prod/express/tower/gt110b/collateral/GT110b_CG.pdf
A Pentium G620 (Sandy Bridge) was also tested for ECC support on a C204 PCH-based motherboard, and for some reason it has ECC enabled: https://hardforum.com/threads/ecc-check-on-intel-i3-processors.1693051/
The PowerEdge T110 2's user manual (see https://web.archive.org/web/20120813002244/http://support.dell.com/support/edocs/systems/pet110II/multilang/GSG/DAO_BCC/T110da.pdf) also seems to imply that ECC is supported on Sandy Bridge-based Pentium and Core i3 processors, which apparently seems to be the case.
Ivy Bridge-based Celeron, Pentium, and Core i3 processors said to support ECC with a C series PCH (C204 in this case): https://www.truenas.com/community/threads/ivy-bridge-core-i3s-and-ecc-santa-clara-we-have-a-problem.28210/page-5 This is also implied in the ProLiant MicroServer G8's document: https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-c03793258
There's some tidbits of information about Haswell-based Core i3 processors supporting ECC too, though I don't know if this applies to the Celeron and Pentium processors. |
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ApostolCV
Joined: 26 May 2020
Posts: 207
Location: Ukraine
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| Posted: Wed May 26, 2021 2:48 am Post subject: |
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Calbris, thanks for interesting links.
Now i get the task to get mobo that supports ECC ram.) |
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ApostolCV
Joined: 26 May 2020
Posts: 207
Location: Ukraine
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| Posted: Fri May 28, 2021 3:07 pm Post subject: |
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Well...
I can give answer for my own question.
I took ASUS mobo for s1150 H81, ES celeron.
My good friend helped me with 2*2GB DDR3 ECC 10600 Unbuffered RAM (Samsung).
It runs great 😊. |
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wren4777
Joined: 13 Dec 2016
Posts: 571
Location: Litija, Slovenia
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| Posted: Fri May 28, 2021 3:11 pm Post subject: |
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ECC unbuffered RAM will boot on most boards, but it will run with the ECC part turned off. Have you checked if it's on? HWInfo64 should be able to tell you.
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ApostolCV
Joined: 26 May 2020
Posts: 207
Location: Ukraine
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| Posted: Fri May 28, 2021 4:41 pm Post subject: |
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Ok. Here is my screenshot of HWInfo64.
 
ECC - "Y"
How can i understand does it work in ECC-mode or not? |
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svmlegacy
Joined: 15 Jun 2016
Posts: 551
Location: Canada
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| Posted: Fri May 28, 2021 6:41 pm Post subject: |
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| ApostolCV wrote: | Well...
I can give answer for my own question.
I took ASUS mobo for s1150 H81, ES celeron.
My good friend helped me with 2*2GB DDR3 ECC 10600 Unbuffered RAM (Samsung).
It runs great 😊. |
The H81 motherboard likely doesn't support ECC at anyways. Motherboard support is also required for RAM, and for ECC to be enabled. |
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Calbris
Joined: 06 Feb 2019
Posts: 157
Location: Singapore
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| Posted: Sat May 29, 2021 6:30 am Post subject: Re: Haswell and ECC |
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| ApostolCV wrote: | | How can i understand does it work in ECC-mode or not? |
That is a tough question to answer, especially if it is on an 'unsupported' motherboard.
There are three ways of 'testing' it, some may work and some may not:
1) Check the UEFI for any ECC-related entries, there might be an entry showing ECC's status.
2) Run MemTest86, and a column named 'ECC' should be displayed with it saying 'off' or 'on' depending on the state of ECC.
3) Undervolt and overclock your RAM to force/induce instability, then monitor the system with Windows' Event Log for any WHEA errors that may pop up. |
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ApostolCV
Joined: 26 May 2020
Posts: 207
Location: Ukraine
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| Posted: Sat May 29, 2021 12:26 pm Post subject: Re: Haswell and ECC |
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| Calbris wrote: | | ApostolCV wrote: | | How can i understand does it work in ECC-mode or not? |
That is a tough question to answer, especially if it is on an 'unsupported' motherboard.
There are three ways of 'testing' it, some may work and some may not:
1) Check the UEFI for any ECC-related entries, there might be an entry showing ECC's status.
2) Run MemTest86, and a column named 'ECC' should be displayed with it saying 'off' or 'on' depending on the state of ECC.
3) Undervolt and overclock your RAM to force/induce instability, then monitor the system with Windows' Event Log for any WHEA errors that may pop up. |
Thanks for the advice.
There is no mention about ECC in bios (only in ram specs).
Memtest86 also detects ECC= NO.
Anyway it is logical that H81 does not know how to work with ECC Memory .
My thanks to all who reply. |
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