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7 Posts

10-29-2018

Germany

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P52 upgrade to 128GB RAM would not power up

2021-04-13, 11:29 AM

I have a P52 with i7-8850H and Quadro P2000 that initially ordered with 32GB single RAM (cpu-z shows Samsung M471A4G43MB1-CTD).

I have the latest BIOS version 1.40 (N2CET57W), product code: 20MAS1M100.

 

I bought an identical model 32GB RAM last year to upgrade to 64GB, it worked without problem.

 

Now I bought 2 additional same Samsung 32GB RAM sticks to upgrade to 128GB. However, after inserting the two RAM (to a total of 128GB) the P52 would not power up. Removing the 2 sticks, it works...

 

I need 128GB to process large scientific datasets, what should I do?

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2250 Posts

03-11-2020

Greece

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Re:P52 upgrade to 128GB RAM would not power up

2021-04-13, 14:04 PM

Hi w4m0330,

 

Welcome to the Community Forums.

 

The P52 with i7-8850H (MT: 20MA) has for some reason the following Memory support:

 

128GB non-ECC or 64GB ECC max / 2400MHz DDR4 (ECC function supported
only on Xeon processor), dual-channel capable, four DDR4 SO-DIMM sockets

  • Installed DIMMs are actually 2666MHz but run at 2400MHz due to Intel limitation
  • 128GB non-ECC memory for special bid only

 

The memory you bought (https://www.samsung.com/semiconductor/dram/module/M471A4G43MB1-CTD/) is not ECC, so we're good on that front, however

the documentation says 128GB non-ECC memory, but for special bid only. I am not entirely sure what that entails, but there seem to be some specification discrepancies between the PSREF documentation and Intel's own documentation for the i7-8850H CPU , where it states Max Memory Size (Max memory size refers to the maximum memory capacity supported by the processor) is 64GB non-ECC.

 

Since you have non-ECC memory, and you have 64GB that works, but the other 64GB does not, it would suggest that the PSREF documentation could be wrong. In the event it is not wrong, the;

  • 128GB non-ECC memory for special bid only

Could mean that 128GB is only supported by special CPU's only, that has to be custom ordered.

 

 

I would however suggest trying to take out the two old (working) 64GB memory sticks you have, and replace them with the new ones you bought, just to test if there might be a problem with the memory sticks themselves, but I do think the conclusion here is that the device (CPU) does not support up to 128GB, but 64GB only.

 

Regards

 

Voithos

 



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2250 Posts

03-11-2020

Greece

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  • Message 2 of 5

Re:P52 upgrade to 128GB RAM would not power up

2021-04-13, 14:04 PM

Hi w4m0330,

 

Welcome to the Community Forums.

 

The P52 with i7-8850H (MT: 20MA) has for some reason the following Memory support:

 

128GB non-ECC or 64GB ECC max / 2400MHz DDR4 (ECC function supported
only on Xeon processor), dual-channel capable, four DDR4 SO-DIMM sockets

  • Installed DIMMs are actually 2666MHz but run at 2400MHz due to Intel limitation
  • 128GB non-ECC memory for special bid only

 

The memory you bought (https://www.samsung.com/semiconductor/dram/module/M471A4G43MB1-CTD/) is not ECC, so we're good on that front, however

the documentation says 128GB non-ECC memory, but for special bid only. I am not entirely sure what that entails, but there seem to be some specification discrepancies between the PSREF documentation and Intel's own documentation for the i7-8850H CPU , where it states Max Memory Size (Max memory size refers to the maximum memory capacity supported by the processor) is 64GB non-ECC.

 

Since you have non-ECC memory, and you have 64GB that works, but the other 64GB does not, it would suggest that the PSREF documentation could be wrong. In the event it is not wrong, the;

  • 128GB non-ECC memory for special bid only

Could mean that 128GB is only supported by special CPU's only, that has to be custom ordered.

 

 

I would however suggest trying to take out the two old (working) 64GB memory sticks you have, and replace them with the new ones you bought, just to test if there might be a problem with the memory sticks themselves, but I do think the conclusion here is that the device (CPU) does not support up to 128GB, but 64GB only.

 

Regards

 

Voithos

 



Did someone help you today? Press the thumbs-up icon below to thank them with a Kudos!!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!
This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

Please don't ask me questions by Private Message; questions belong in the forums.

0 person found this solution to be helpful.

This helped me too

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11853 Posts

01-02-2010

United States of America

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  • Message 3 of 5

Re:P52 upgrade to 128GB RAM would not power up

2021-04-13, 14:55 PM

The first boot after you change the RAM or certain other parts may take a long time - longer than you would think.  The machine tests speeds and timings of each slot.  It may take a full 2 - 4 minutes or even longer on 4-slot machines.  Subsequent boots work normally.  I turn the machine on and go get a cup of coffee.


Rich


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

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7 Posts

10-29-2018

Germany

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  • Message 4 of 5

Re:P52 upgrade to 128GB RAM would not power up

2021-04-14, 9:33 AM

Thanks for the information.

 

Just feedback:

 

I swaped the two new sticks with the old one and did some more test (using single stick in any of the 4 slots). It turned out one of the newly arrived RAM stick is dead. With that dead RAM stick after a 2min power up/down cycle, I feel the temperature of the RAM stick is burning hot, significantly hotter than the other working RAM sticks.

 

I have now installed 3 RAM sticks and a total of 96GB RAM working no problem in Windows 10.

BTW, my 96GB RAM run at 2666MHz.

 

I'll wait until the replacement RAM stick from Conrad.de to max the RAM to 128GB.

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7 Posts

10-29-2018

Germany

6 Signins

79 Page Views

  • Posts: 7
  • Registered: ‎10-29-2018
  • Location: Germany
  • Views: 79
  • Message 5 of 5

Re:P52 upgrade to 128GB RAM would not power up

2021-04-14, 9:34 AM
Indeed, after changing the RAM, it requires ~1min to boot up in the first time, in my case.
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