RAM Speed default 2667MHz when it should be 3200MHz

[steffeponta]

I had 24 gb ram which one stick ( 8gb ) was 2400Mhz I think, I took away the stick with 2400MHz on it and what's left is my two 8 gb sticks 3200Mhz but they are just stuck on 2667MHz. I also run them in dual channel. How do I change the speed to 3200Mhz? 

[Prométhée]

Hello

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we need the exact model of your computer, and the product number
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HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support

in general there is no option if the motherboard is indicated to accept only 2400

[steffeponta]

The model number is 880-112no

The product number is 2XC62EA#UUW

[Prométhée]

• Dual channel (2 DIMMs per channel) memory architecture
• Four DDR4 UDIMM (288-pin) sockets
• Supports PC4-19200 (DDR4-2400)
• Supports 4 GB and 8 GB DDR4 UDIMMs
• Supports up to 4 GB on 32-bit systems

  note:

  32-bit systems cannot address a full 4.0 GB of memory.

Supports up to 32 GB (unbuffered) on 64-bit computers

note:

Maximum memory shown reflects the capability of the hardware and can be limited further in the operating system.

but there his this too

motherboard specifications, Tampa2

• Dual channel (2 DIMMs per channel) memory architecture
• Four DDR4 UDIMM (288-pin) sockets
• Supports PC4-21300 (DDR4-2666) and PC4-19200 (DDR4-2400)
• Supports 4 GB, 8 GB, and 16 GB DDR4 UDIMMs
• Supports up to 4 GB on 32-bit systems

  note:

  32-bit systems cannot address a full 4.0 GB of memory.

Supports up to 64 GB (unbuffered) with four 16 GB modules and 32 GB (unbuffered) with four 8 GB modulues on 64-bit computers

note:

Maximum memory shown reflects the capability of the hardware and can be limited further in the operating system.

 so this is the maximum recommended here
This model is not designed to change that in the bios!
either you have to do with it, or use compatible modules, but it would be the same in the end!