Confuse to choose the RAM

[MZahid]

Hello there,

I  want to add 2 Module fo 16 GB RAM to increase to 32 GB, i can see several RAM module around, may i know which is the correct one to choose?

Options I can see,

Option 1)

16GB DDR4-2666 SODIMM
DDR4 PC4-21300 • CL=19 • Dual Ranked • x8 based • Unbuffered • NON-ECC • DDR4-2666 • 1.2V

Option 2)

16GB DDR4-2400 SODIMM
DDR4 PC4-19200 • CL=17 • Dual Ranked • x8 based • Unbuffered • NON-ECC • DDR4-2400 • 1.2V

[Paul_Tikkanen]

Hi:

What model processor does your notebook have?

What speed memory is in there now?

Use the free utility that I zipped up and attached below that will show you the memory info and the speed the memory is running at.

[MZahid]

Hi,

Unfortunatly I can not run this utility on my PC due to Domain Policies, here is detail of my PC

System Model HP EliteBook 840 G6
System Type x64-based PC
System SKU 4WG30AV
Processor Intel(R) Core(TM) i5-8365U CPU @ 1.60GHz, 1896 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date HP R70 Ver. 01.02.00, 18-Jun-19
SMBIOS Version 3.1

C:\Users\ali>wmic MEMORYCHIP get BankLabel, DeviceLocator, MemoryType, TypeDetail, Capacity, Speed
BankLabel Capacity DeviceLocator MemoryType Speed TypeDetail
ChannelA0 8589934592 Bottom-Slot 1(left) 0 2400 128
ChannelB0 8589934592 Bottom-Slot 2(right) 0 2400 128

Thanks

[Paul_Tikkanen]

You're very welcome.

You would want the DDR4-2400 MHz memory chip.

That is the fastest speed your notebook's processor can run the memory at, according to the specs from Intel.

https://ark.intel.com/content/www/us/en/ark/products/193555/intel-core-i5-8365u-processor-6m-cache-u...

[MZahid]

Hi Paul,

Thansk for answer.

what if i choose 2666 /21300/CL19  which is far cheaper? will it work?

16GB DDR4-2666 SODIMM
DDR4 PC4-21300 • CL=19 • Dual Ranked • x8 based • Unbuffered • NON-ECC • DDR4-2666 • 1.2V

[Paul_Tikkanen]

You're very welcome.

If the 2666 MHz memory is far cheaper, then you may as well get that one.   

It will just downclock to 2400 MHz to match the speed of the processor.