Can I add RAM to my 15z-ef100

[sbrebel88]

Hello. I am needing to add memory to my laptop but I cannot find the information needed. Can anyone explain how I find how much RAM I can add, what type and if I can do it myself? Thank you

[Paul_Tikkanen]

Hi:

The model series supports 2 x 8 GB of DDR4-3200 CL22 memory.

The only place I can find a service manual for your notebook is on this 3rd party manuals link:

HP 15-ef1000 | Maintenance and Service Guide - Page 1

If your notebook has one of the AMD Ryzen 4000 series processors, it should be able to support 2 x 16 GB of DDR4-3200 CL22 memory.

[TzortzisG]

Hi!

Paul, I believe that any systems in this series with a Ryzen processor can be taken up to 64GBs of RAM.

HP 15-EF100 Laptop AMD Ryzen 64GB DDR4 (Amazon) 

By the way, for archiving purposes I have included a snapshot (courtesy of Wayback machine) of the original manual HP had on its servers: HP 15 Laptop PC MANUAL (Model numbers: 15-ef0, 15z-ef0, 15s-eq0, 15s-er0, 15s-ey0) 

[Paul_Tikkanen]

Hi, @TzortzisG 

I am skeptical that the notebooks that come with the AMD Athlon 3150U processors will support 64 GB of memory and there are some models in the 15z-ef100 model series that come with those processors.

Amazon.com: HP 15z-ef100 Home & Business Laptop (AMD Athlon Gold 3150U 2-Core, 16GB RAM, 128GB m.2 S...

[TzortzisG]

To be honest, I'm not sure.

This is why I only talked about the Ryzen variants. I think the Athlon CPUs might still find 64GB as compatible, but the thing is that users tend to max out or even try to "maximise the maximum" (stolen from compuRAM's page) when they have powerful components on their system. Meaning that we're not likely to find a lot of systems with Athlon or Celeron processors sold with the (now) very expensive 64GB RAM, or users attempting such an extreme upgrade, probably because the CPU makes this upgrade not worth it.

[Paul_Tikkanen]

I don't believe that 64 GB of memory in a non-gaming notebook with an AMD Ryzen 3 3250U processor would be worth it either.

Especially due to the current high costs of memory as you indicated.

The memory costs do not seem to be coming down either.

[TzortzisG]

So, this is a plain Pavilion with a  3150U sold on Amazon Egypt upgraded to 64GBs (and with a 2TB PCIe drive). They've used specific HP branded RAM modules for this upgrade, and I've seen this before -it means the system doesn't accept your run of the mill 32GB modules: HP Pavilion 17 Laptop AMD Athlon Gold 3150U Processor 64 GB RAM 2TB PCIe Amazon.eg (archived offer). 

I agree with you on whether it makes sense actually buying all this RAM for systems like these. Especially since most users don't make use of it. This means that all these RAM chips are just powered electronics.....doing nothing. I do however like knowing the limits of things, and also I try to never judge what other users want to do with their machines (just answer their questions).......