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1 Posts

09-19-2019

United States of America

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Re: Thinkpad P52 / p72 with 128GB RAM

2019-09-19, 21:14 PM

I tried 2 of these and 4 of these, also in combination with the 4x 16GB SODIMMs I already had installed (64G total, prior).

 

https://www.amazon.com/gp/product/B07N124XDS/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

 

They did not work.  I could find any combination that the RAM was recognized.

 

I'm returning them.

 

BEWARE.

 

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2 Posts

03-27-2019

United States of America

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Re: Thinkpad P52 / p72 with 128GB RAM

2019-10-13, 4:08 AM

Hi mykesx-

 

Thanks for the information. I also own a Lenovo P52 (09/2018) with a Xeon (E-2176M) and installed 64GB (4x16GB) of 2666MHz RAM that needs to be upgraded to 100GB RAM to review large three-dimensional medical imaging files.

 

You say that installing four 32GB DDR4 SODIMM 2666MHz Samsung sticks  to create (128GB) did not work.  Also installing two 32GB Samsung sticks along with two 16GB Lenovo (i.e. Samsusng) installed sticks to create (96GB) did not work.  Did you update the BIOS  to the current N2CET46W (1.29) before installing the new 32GB sticks?  Updating the BIOS removes the RAM speed throttle so that the Lenovo installed 16GB sticks run at max speed 2666 MHz instead of 2400 MHz.  I found I needed to enable and save the BIOS, then shutdown, and remove the battery for a few minutes before the current (operating) speed equaled the maximum speed of 2666MHz. No more 2400MHz.   I wonder if this latest Lenovo BIOS update also allows you to exceed 64GB?

 

Can anyone confirm that once the BIOS is updated to (1.29) and the 2400MHz speed throttle is removed, then the 64 GB limit can be exceeded with the 32GB DDR4 SODIMM 2666MHz Samsung (M471A4G43MB1) sticks?  Has anyone installed four 32GB Samsung sticks into a P52 to create an operational 128GB system?  Are the 32GB Samsung sticks ECC or non-ECC?  Has anyone combined two 32GB Samsung sticks with two existing Lenovo 16GB sticks to get to 96GB since they are all DDR4 SODIMM 2666MHz Samsung sticks?

 

Thanks in advance.

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2 Posts

03-27-2019

United States of America

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  • Message 43 of 47

Re: Thinkpad P52 / p72 with 128GB RAM

2020-02-02, 7:23 AM

I can confirm that 128 GB of RAM can be installed in a Lenovo P52 and it is fully addressable.  I started with a Lenovo P52 (09/2018) with an installed 64GB (4x16GB), See above.  Today I updated the BIOS to (1.31) and then I replaced the four 16 GB sticks with four 32 GB sticks for a total of 128 GB.  The four memory sticks were purchased from Amazon (32GB DDR4 SODIMM 2666MHz Samsung (M471A4G43MB1) ).  The memory was easy to install following YouTube videos, searching (P52 memory upgrades).  Two sticks underneath and two sticks under the keyboard.  It works perfect.  My memory intensive visualization software easily opens 100+ GB files and screams through renderings.  What an amazing laptop.

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1 Posts

01-27-2021

Ecuador

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  • Message 44 of 47

Re:Thinkpad P52 / p72 with 128GB RAM

2021-01-27, 3:32 AM

Hello 

 

I know that this topic is about P52 but I want your help. I have a Lenovo P53 with 64GB RAM (2 slots populated), I want to know if I can upgrade to 128GB RAM?. The model is 20QN002LUS and the BIOS version 1.25 (N2NET40W)

The Lenovo has 4 slots and 2 are busy with the model Avant Technology. So if possible to upgrade Can I use the samsung M471A4G43MB1-CTD ?

 

Regards

 

Wilson

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59 Posts

05-12-2016

United Kingdom of Great Britain and Northern Ireland

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  • Message 45 of 47

Re:Thinkpad P52 / p72 with 128GB RAM

2021-01-27, 3:46 AM

Hi

 

Yes, you can upgrade to the maximum which supported which for this model which is 128GB, since the release of the P52 series users can upgrade these workstations up to 128GB.

 

The part number for the RAM you are planning to upgrade M471A4G43MB1-CTD is compatible with your laptop. 

 

Regards, 

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7 Posts

10-29-2018

Germany

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  • Message 46 of 47

Re:Thinkpad P52 / p72 with 128GB RAM

2021-04-13, 10:55 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 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?

 

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

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4070 Posts

12-02-2007

United States of America

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  • Message 47 of 47

Re:Thinkpad P52 / p72 with 128GB RAM

2021-04-14, 10:00 AM

Hello,

 

When you install new memory into a recent ThinkPad, it has to reinitialize the UEFI environment.  This can take a few minutes on the first boot, during which the screen will appear blank.  Afterwards, it will boot as normal.

 

Regards,

 

Aryeh Goretsky

 



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