Determine System Memory Size, Speed, and Type in Windows 10  

I have two RAM sticks of different sizes and manufacturers. The commands work perfectly.

Code:

Windows PowerShell
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PS C:\Users\Matthew_Wai> Get-CimInstance -ClassName Win32_PhysicalMemory | Format-Table Capacity, Manufacturer, FormFactor, Banklabel, Configuredclockspeed, Speed, Devicelocator, Serialnumber -AutoSize

  Capacity Manufacturer FormFactor Banklabel Configuredclockspeed Speed Devicelocator  Serialnumber
  -------- ------------ ---------- --------- -------------------- ----- -------------  ------------
2147483648 0707                  8 BANK 0                    1333  1333 ChannelA-DIMM0 00000000
4294967296 Micron                8 BANK 2                    1333  1333 ChannelB-DIMM0 DF7FDCB2


PS C:\Users\Matthew_Wai> CMD
Microsoft Windows [Version 10.0.19042.746]
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C:\Users\Matthew_Wai>wmic MemoryChip get Banklabel, Capacity, Configuredclockspeed, Devicelocator, FormFactor, Manufacturer, Serialnumber, Speed
BankLabel  Capacity    ConfiguredClockSpeed  DeviceLocator   FormFactor  Manufacturer  SerialNumber  Speed
BANK 0     2147483648  1333                  ChannelA-DIMM0  8           0707          00000000      1333
BANK 2     4294967296  1333                  ChannelB-DIMM0  8           Micron        DF7FDCB2      1333

Brink said:

How does it behave when you only have one stick installed? I'd test the 4GB stick.

Following your suggestions...

1. Installed only 4 GB RAM.
No ram details were provided at the powershell or CMD prompt.

2. Installed only 2 GB RAM.
Same results. No ram details.

3. Swap the ram stick over to the other slots and retested again separately, yet, same results.

4. Installed both rams and retested again, same results.

5. Now, in all the above mentioned cases separately, ...

5.A. What I noticed was that whenever I used the command "configuredclockspeed" in powershell, it returns ERROR as encircled in attached images.

5.B. The speed of ram shown in task manager is 20307 MHz!!!! Where is this speed coming from? Is not supposed to be 1333 MHz or 1600 MHz when single ram is used or 1333 MHz when both rams used???

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Here are the screenshots...



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Ps. I have run the memtest tests, standard as well as extended mode, for each ram modules and for both, which returns NO MEMORY ERRORS!!!

Please try to find any suggestions from people having the same laptop model!
And, to confirm whether they faced the same issues or not?

Interestingly, same issues arise even if I installed Windows 7!!!

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And, why the ram speed is showing 20307 MHz in task manager???

I have also located the said BIOS update.

But as far as possible, in any cases, I don't want to try and risk BIOS UPDATE!!!! until and unless it is confidential and confirmed that by updating the bios is going to fix the issue!!!

But even if updating the BIOS fixed the rams speed in task manager, still the CMD prompt is not going to report ram details???