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11719 Posts

01-02-2010

United States of America

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  • Message 31 of 45

Re: Thinkpad P52 / p72 with 128GB RAM

2019-03-23, 21:36 PM

Regarding the previous post on the P51, I am not sure how a BIOS update would help.  The limitation seems to be in the CPU and chipset.


Rich


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59 Posts

05-12-2016

United Kingdom of Great Britain and Northern Ireland

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  • Message 32 of 45

Re: Thinkpad P52 / p72 with 128GB RAM

2019-03-23, 21:51 PM

I believe this limitation is not on the CPU itself or even the chipset, with the new coffee lake CPU launched by Intel last year even though those ones the maximum RAM they support is 64GB, and after looking the notes (readme document) of the P52 Bios

 

<1.10>
 UEFI: 1.10 / ECP: 1.09
- (New) Added support of ThinkPad P72 (Machine types: 20MB, 20MC)
- (New) Updated the Video BIOS and the GOP driver.
- (New) Updated the CPU microcode.
- (New) Support Dolby Vision function on UHD panel.
- (New) Updated E-Labeling module to version 2.02.1.3.
- (New) Support TPM firmware Update by utility.
- (New) Updated the Diagnostics module to version 04.00.001.
- (Fix) Fixed an issue where BIOS POST might display the error message ""1802: Unauthorized network card is plugged in - Power off and remove the network card (8086/7360/0000/0000).""
- (Fix) Fixed an issue where system can't connect by Serial Over LAN function.
- (Fix) Fixed memory capacity show incorrect when attached 64GB above memory.
- (Fix) Fixed an issue where BIOS POST might display the error message ""Boot Manager recover from an error.""
- (Fix) Fixed an intermittent issue that Thunderbolt doesn't work when resume from sleep state.
- (Fix) Fixed an issue where audio function might not work as expected.

You can see that on the release of version 1.10 they fixed an issue with the memory capacity showing incorrect when attached 64GB above, obviously this change is related to the P52, but with this in mind lenovo could do the same on the P51 and apply the same fix. 

 

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11719 Posts

01-02-2010

United States of America

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  • Message 33 of 45

Re: Thinkpad P52 / p72 with 128GB RAM

2019-03-23, 22:27 PM

That's a different chipset and generation of CPU


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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69 Posts

03-01-2019

United Kingdom of Great Britain and Northern Ireland

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  • Message 34 of 45

Re: Thinkpad P52 / p72 with 128GB RAM

2019-03-26, 23:23 PM

Reading through this thread I see that some might find thess real life experiences useful.


I bought a 32GB P72 (Xeon) from a reseller earlier this month.  Put 2x32GB Samsungs in it and now running at 96GB no problems.  A friend purchased a 16GB P52 (i7) around the same time and did the same upgrade as I, now successfully running at 80GB.


HP Z840 dual Xeon 2667-v3 | 2020 MBP 16 i9 32GB
(Previous: P72 Xeon 96GB | 2018 X1C i7 16GB | 2019 MBP 13 i7 16GB)
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10183 Posts

09-04-2014

Slovakia

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  • Message 35 of 45

Re: Thinkpad P52 / p72 with 128GB RAM

2019-03-26, 22:52 PM
 

Andy

 

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10 Posts

09-21-2018

Belize

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  • Message 36 of 45

Re: Thinkpad P52 / p72 with 128GB RAM

2019-05-21, 1:09 AM

Awesome. Thank Hartmannsson for sharing your experience!!!

 

Would you please advise the exact Samsung Memory Product number that you were able to install into your laptop?

 

Is it M471A4G43MB1-CTD?

 

Cheers

Tina

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69 Posts

03-01-2019

United Kingdom of Great Britain and Northern Ireland

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Re: Thinkpad P52 / p72 with 128GB RAM

2019-05-21, 18:38 PM

That's the one tinatan.  I got mine from scan.co.uk for just under £500.


HP Z840 dual Xeon 2667-v3 | 2020 MBP 16 i9 32GB
(Previous: P72 Xeon 96GB | 2018 X1C i7 16GB | 2019 MBP 13 i7 16GB)
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10 Posts

09-21-2018

Belize

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Re: Thinkpad P52 / p72 with 128GB RAM

2019-05-22, 2:15 AM

Awesome. Many thanks Hartmannsson!

 

Cheers

Tina

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1 Posts

07-31-2019

Germany

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  • Message 39 of 45

Re: Thinkpad P52 / p72 with 128GB RAM

2019-07-31, 21:16 PM

I also put a M471A4G43MB1-CTD in my P72 (8GB was installed) to get 40G memory.

It's not recognized in BIOS or Win10, although latest BIOS version and drivers are installed.

Only see the module in cpu-z.

Any ideas?

 

UPDATE: Did a shutdown and started after 10sec. Now it works.

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1 Posts

08-19-2019

India

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  • Message 40 of 45

Re: Thinkpad P52 / p72 with 128GB RAM

2019-08-19, 20:22 PM

Thanks Andy. That was exactly my query.

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