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How many mhz can my motherboard support?

Hp Omen Obelisk 875-1009
Microsoft Windows 10 (64-bit)

I want to upgrade my ram since the ram inside my pc is 2666mhz so I was wondering how much the motherboard in my computer supports. I am also wondering how to change the speeds to the advertised speed or if its automatically done. Thanks in advance 🙂

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HP Recommended

How many mhz can my motherboard support?

We would need the exact model of the pc with product number P / N
It may not be the right model:

Shire motherboard specifications.


  • Dual channel (2 DIMMs per channel) memory architecture
  • Four DDR4 UDIMM (288-pin) sockets
  • Supports PC4-21300 (DDR4-2666)
  • Supports 8 GB and 16 GB DDR4 UDIMMs
  • Supports up to 4 GB on 32-bit systems
    32-bit systems cannot address a full 4.0 GB of memory.
  • Supports up to 64 GB (unbuffered) with 16 GB DIMMs on 64-bit computers.


Generally not possible to modify on HP PCs

So well this model so it is mentioned
     Amount: 16 GB
     Speed: PC4-21300 MB / s
     Type: DDR4-2666
That should be enough it is just possible to increase the quantity installed

If it has this configuration
I7 9700 16gb rtx2070 256 m2 SSD ..
and it’s slow, there’s a problem somewhere

Expert volontaire Forum Fr 17-10-2009

Sorry i'm using

give the model and P/n product number of the device

example: HP Phoenix h9-1228ef HPE product no.P / N: C0B64EA

please click on the accept as solution button

if message provided an answer / solution to the problem

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