Ram upgrade question for HP Omen 25L series

[jaytalent]

I bought an HP (Omen 25L series) with a proprietary motherboard here:
https://support.hp.com/us-en/product/omen-by-hp-25l-gaming-desktop-pc-gt15-0000i/2100828614/model/21...
It states:
Supports up to PC4-27700 (DDR4-3467) for 65 W CPU
Supports up to PC4-25600 (DDR4-3200) on select models
Supports 8 GB and 16 GB DDR4 UDIMMs
Supports up to 4 GB on 32-bit systemsNOTE:32-bit systems cannot address a full 4.0 GB of memory.
Supports up to 128 GB (unbuffered) with 32 GB DIMMs on 64-bit computers

This is a little confusing because it calls out that it support 8 and 16 GB DDR4 with no mention of 32 but then separately calls out support for up to 128 GB with 32 GB DIMMs. So I assume this will infact support two 32 GB DIMMS when running on a 64 bit OS?
It also states it supports up to DDR4-3467 for 65 W CPU (which I have). Does that mean I cannot use 3600 ram at all or I just won't receive any benefit to using it? It seems 3600 RAM is cheaper since 3400 RAM is uncommon.

[Prométhée]

Hi

before answering you, can you indicate the product number P/n of your computer, and the exact name of the model:

Hello

[start]This is an automatic response
in order to avoid writing the same thing each time

Some elements may therefore not apply to you 
To be able to answer you effectively, we need some information

To find it follow this
for a desktop computer

HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support
and for a laptop
HP Notebook PCs - How Do I Find My Product Name or Number? | HP® Customer Support

Give the full name with the product number P / N

this is not a model:
HP Desktop M01-F1xxx
the requested product number must look like this
Product Number: 9EE50AA # ABA
the model corresponding to this number will therefore be
HP Desktop - M01-F1033wb

check system information

the mention of usable module 8gb 16 gb or 32gb
returns regularly in error, if the motherboard is supposed to accept more than 16 gb, then or in function we can use 32 gb or even 64 gb per module

but beware this type of model is often capricious for the replacement / addition of memory module

[jaytalent]

I don't think this answers my question fully. I also don't know if this is regarding my PC as the model I put down (with the link to the product page) doesn't match what you wrote.

[Prométhée]

sorry , but I just ask you to confirm me a P/N product number, in case there is a problem of model / given page
the hp shop page may have been given by mistake

So sure it's this model?
OMEN by HP 25L Gaming Desktop GT15-0345st Bundle PC

Intel® Core™ i7-12700

HyperX 16 GB DDR4-3200 MHz

so if this ,if not yet an error in the product pages

Intel Core i7-12700 (2.1 GHz base frequency, up to 4.9 GHz with Intel Turbo Boost Technology, 25 MB L3 cache, 12 cores, 20 threads)

65 W

Supports up to PC4-27700 (DDR4-3467) for 65 W CPU

"This is a little confusing because it calls out that it support 8 and 16 GB DDR4 with no mention of 32 but then separately calls out support for up to 128 GB with 32 GB DIMMs. So I assume this will infact support two 32 GB DIMMS when running on a 64 bit OS?"

here I think I answered, so yes!

"It also states it supports up to DDR4-3467 for 65 W CPU (which I have). Does that mean I cannot use 3600 ram at all or"

it is indicated the max supported, so either it would not work at all
either the speed will be restricted, but difficult to say anything

at intel it is indicated this for the support by the processor

https://www.intel.fr/content/www/fr/fr/products/sku/134591/intel-core-i712700-processor-25m-cache-up...

Up to DDR4 3200 MT/s

as far as possible in case of addition / replacement, I advise you to stay as close as possible to what you have in place
as I said, it's quite capricious with these models, you can see in the forum, many threads with memory module problems, not recognized, bad frequency ..;

[jaytalent]

That's all the information I have to go by as I ordered the item from that page but haven't received the delivery yet.