Adding RAM to zbook 15G3

[kl122002]

Hello, 

My zbook 15 G3 is having 32GB memory (in 2 slots) and using Xenon CPU.  I want to add 32BG more so that it wil become 64GB and let the system run in dual channel completely. The ECC RAM is not cheap and uneasy to find . Here are some of my worries: 

1.I was also told it is better to get HP's original instead of finding other parties, which means I can't use Kingston  RAM?

2. And , the original spec of the RAM is DDR4-2133 EEC SODIMM . Is it possible if I replace all 4 RAMs with 2400 MHz ? Will the chipset / motherboard support 2400 MHz ? 

Thank you. 

[Huffer]

I have a Zbook G3 but its the i7 version and takes regular non-ECC DDR4-2133 SO-DIMM. It has 4 slots and like yours, can take up to 64 gigs. I upgraded mine to 16 gigs using aftermarket memory with the original HP memory and it works fine. I have had no experience with ECC DDR4 laptop memory but the non-ECC type I have and it does not appear to be really finicky. Here is the HP part number for the 16 gig DDR4-2133 ECC SO-DIMMs:

For use in models with Xeon Core processors ● 16-GB 835886-001

This memory would work fine for you:

https://www.amazon.com/Timetec-2133MHz-Unbuffered-Upgrade-HMA82GS7MFR8N-TFT0/dp/B06VVSP858/ref=sr_1_...

You can mix it with the 2 original modules. 

Service manual:

Manual

You can install DDR4-2400 and it will work but the system can only run it at 2133 speed. You might actually find 2400 to be a bit more available and maybe even a little cheaper and, if so, you can use that. I shudder to think what the HP Parts Store would charge for this but let's look:

https://parts.hp.com/hpparts/Search_Results.aspx?mscssid=00D8EE5673164A54AEF2D356CA386588&SearchIn=P...

$333 PER MODULE

For $100 more on amazon.com you could get 4 modules. 

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