My HP Laptop has “DDR4-2666/PC4-21300 DDR4 SDRAM SODIMM” (4GB) in one slot, Can I put “DDR4-2400 SODIMM” (8 GB) in next ?

Mahade1

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I have HP Laptop 15-bs1xx ? It has Intel Core i5-8250U Processor on HP 832A Motherboard.

It has two memory slots. In one, as per HWinfo tool, I have "DDR4-2666 / PC4-21300 DDR4 SDRAM SO-DIMM" 4GB.

I want to expand my memory.

I saw a cheap 8GB memory ( Crucial 8GB DDR4-2400 SODIMM CT8G4SFS824A ) online. It is "DDR4-2400 SODIMM". Would this be compatible with my HP laptop ?

Please Help ! I don't want to end up with the wrong RAM.

https://i.stack.imgur.com/CzulT.jpg
https://i.stack.imgur.com/wuVGD.jpg
 

Mahade1

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But if I put 8GB 2400MHz, will it slow down my existing 4GB 2666MHz RAM. I heard somewhere that speed should match otherwise the other will slow down. How significant is the difference.

 

USAFRet

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Mar 16, 2013
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At best, it will downclock to the slowest.
At worst, of course, it is simply not working at all.
 

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