Windows 10: Command to display RAM Special Presence Detect SPD and RAM type (DDR4)

When using Speecy, HWinfo, CPU-Z, etc. they display Special Presence Detect (SPD) data and RAM type (DDR4 versus DDR3)


What commands are available that can display SPD data without using third party software?

Frequency, CAS #latency, RAS# to CAS#, RAS# Precharge, tRAS, tRC, Voltage, etc

What commands are available that can distinguish DDR4 versus DDR3 RAM and display DDR4 instead of 0 for unknown memory type?


This is an example of SPD data and data displaying DDR3 from Speecy: (the computer for this post did not have DDR4 and specifically DDR4 confirmation is needed when the computer is using DDR4 RAM)
(This computer displayed slot 2 data with anomalous data (different from other DIMM)

Code: SPD Number Of SPD Modules 4 Slot #1 Type DDR3 Size 8192 MBytes Manufacturer Hyundai Electronics Max Bandwidth PC3-12800 (800 MHz) Part Number HM Serial Number 87680503 Week/year 07 / 165 Timing table JEDEC #1 Frequency 381.0 MHz CAS# Latency 5.0 RAS# To CAS# 5 RAS# Precharge 5 tRAS 14 tRC 19 Voltage 1.350 V JEDEC #2 Frequency 457.1 MHz CAS# Latency 6.0 RAS# To CAS# 6 RAS# Precharge 6 tRAS 16 tRC 22 Voltage 1.350 V JEDEC #3 Frequency 533.3 MHz CAS# Latency 7.0 RAS# To CAS# 7 RAS# Precharge 7 tRAS 19 tRC 26 Voltage 1.350 V JEDEC #4 Frequency 609.5 MHz CAS# Latency 8.0 RAS# To CAS# 8 RAS# Precharge 8 tRAS 22 tRC 30 Voltage 1.350 V JEDEC #5 Frequency 685.7 MHz CAS# Latency 9.0 RAS# To CAS# 9 RAS# Precharge 9 tRAS 24 tRC 33 Voltage 1.350 V JEDEC #6 Frequency 761.9 MHz CAS# Latency 10.0 RAS# To CAS# 10 RAS# Precharge 10 tRAS 27 tRC 37 Voltage 1.350 V JEDEC #7 Frequency 800.0 MHz CAS# Latency 11.0 RAS# To CAS# 11 RAS# Precharge 11 tRAS 28 tRC 39 Voltage 1.350 V Slot #2 Type DDR3 Size 8192 MBytes Manufacturer Samsung Max Bandwidth PC3-500 (31 MHz) Part Number M Serial Number 309456138 Week/year 22 / 15 Timing table JEDEC #1 Frequency 31.4 MHz CAS# Latency 5.0 RAS# To CAS# 1 RAS# Precharge 1 tRAS 2 tRC 2 Voltage 1.350 V JEDEC #2 Frequency 31.4 MHz CAS# Latency 6.0 RAS# To CAS# 1 RAS# Precharge 1 tRAS 2 tRC 2 Voltage 1.350 V JEDEC #3 Frequency 31.4 MHz CAS# Latency 7.0 RAS# To CAS# 1 RAS# Precharge 1 tRAS 2 tRC 2 Voltage 1.350 V JEDEC #4 Frequency 31.4 MHz CAS# Latency 8.0 RAS# To CAS# 1 RAS# Precharge 1 tRAS 2 tRC 2 Voltage 1.350 V JEDEC #5 Frequency 31.4 MHz CAS# Latency 9.0 RAS# To CAS# 1 RAS# Precharge 1 tRAS 2 tRC 2 Voltage 1.350 V JEDEC #6 Frequency 31.4 MHz CAS# Latency 10.0 RAS# To CAS# 1 RAS# Precharge 1 tRAS 2 tRC 2 Voltage 1.350 V JEDEC #7 Frequency 31.4 MHz CAS# Latency 11.0 RAS# To CAS# 1 RAS# Precharge 1 tRAS 2 tRC 2 Voltage 1.350 V Slot #3 Type DDR3 Size 8192 MBytes Manufacturer Hyundai Electronics Max Bandwidth PC3-12800 (800 MHz) Part Number HMT41GS6AFR8A-PB Serial Number 89777629 Week/year 07 / 15 Timing table JEDEC #1 Frequency 381.0 MHz CAS# Latency 5.0 RAS# To CAS# 5 RAS# Precharge 5 tRAS 14 tRC 19 Voltage 1.350 V JEDEC #2 Frequency 457.1 MHz CAS# Latency 6.0 RAS# To CAS# 6 RAS# Precharge 6 tRAS 16 tRC 22 Voltage 1.350 V JEDEC #3 Frequency 533.3 MHz CAS# Latency 7.0 RAS# To CAS# 7 RAS# Precharge 7 tRAS 19 tRC 26 Voltage 1.350 V JEDEC #4 Frequency 609.5 MHz CAS# Latency 8.0 RAS# To CAS# 8 RAS# Precharge 8 tRAS 22 tRC 30 Voltage 1.350 V JEDEC #5 Frequency 685.7 MHz CAS# Latency 9.0 RAS# To CAS# 9 RAS# Precharge 9 tRAS 24 tRC 33 Voltage 1.350 V JEDEC #6 Frequency 761.9 MHz CAS# Latency 10.0 RAS# To CAS# 10 RAS# Precharge 10 tRAS 27 tRC 37 Voltage 1.350 V JEDEC #7 Frequency 800.0 MHz CAS# Latency 11.0 RAS# To CAS# 11 RAS# Precharge 11 tRAS 28 tRC 39 Voltage 1.350 V Slot #4 Type DDR3 Size 8192 MBytes Manufacturer Samsung Max Bandwidth PC3-12800 (800 MHz) Part Number M471B1G73QH0-YK0 Serial Number 309445750 Week/year 22 / 15 Timing table JEDEC #1 Frequency 381.0 MHz CAS# Latency 5.0 RAS# To CAS# 5 RAS# Precharge 5 tRAS 14 tRC 19 Voltage 1.350 V JEDEC #2 Frequency 457.1 MHz CAS# Latency 6.0 RAS# To CAS# 6 RAS# Precharge 6 tRAS 16 tRC 22 Voltage 1.350 V JEDEC #3 Frequency 533.3 MHz CAS# Latency 7.0 RAS# To CAS# 7 RAS# Precharge 7 tRAS 19 tRC 26 Voltage 1.350 V JEDEC #4 Frequency 609.5 MHz CAS# Latency 8.0 RAS# To CAS# 8 RAS# Precharge 8 tRAS 22 tRC 30 Voltage 1.350 V JEDEC #5 Frequency 685.7 MHz CAS# Latency 9.0 RAS# To CAS# 9 RAS# Precharge 9 tRAS 24 tRC 33 Voltage 1.350 V JEDEC #6 Frequency 761.9 MHz CAS# Latency 10.0 RAS# To CAS# 10 RAS# Precharge 10 tRAS 27 tRC 37 Voltage 1.350 V JEDEC #7 Frequency 800.0 MHz CAS# Latency 11.0 RAS# To CAS# 11 RAS# Precharge 11 tRAS 28 tRC 39 Voltage 1.350 V[/quote]
The command would be one that could be included in a log collector or could be ran manually.
It could be using administrative powershell or administrative command prompt.

These are commands that display some information about RAM but do not yet display the needed information: DDR4 and SPD

Some commands can display memory type up to DDR3 and display memory type 0 as unknown for DDR4

Code: 0 = Unknown 20 = DDR 21 = DDR2 22 = DDR2 FB=DIMM 24 = DDR3[/quote] a) wmic memorychip get capacity, devicelocator, formfactor, manufacturer, memorytype, partnumber, speed, serialnumber
b) wmic memorychip list full

c) systeminfo | findstr /C:”Total Physical Memory”
d) systeminfo |find “Available Physical Memory”

e) Get-WmiObject win32_physicalmemory | Format-Table Manufacturer,Banklabel,Configuredclockspeed,Devicelocator,Capacity,Serialnumber -autosize
f) Get-WmiObject -class "Win32_PhysicalMemoryArray"
g) Get-WmiObject Win32_PhysicalMemory | Measure-Object -Property Capacity -Sum
(get-wmiobject -class "win32_physicalmemory" -namespace "root\CIMV2").Capacity

i) Script PowerShell - Get Memory (RAM) configuration for local or remote machine
The link used this command:

Code: [Cmdletbinding()] Param( [string]$Computername = "localhost" ) cls $PysicalMemory = Get-WmiObject -class "win32_physicalmemory" -namespace "root\CIMV2" -ComputerName $Computername Write-Host "Memore Modules:" -ForegroundColor Green $PysicalMemory | Format-Table Tag,BankLabel,@{n="Capacity(GB)";e={$_.Capacity/1GB}},Manufacturer,PartNumber,Speed -AutoSize Write-Host "Total Memory:" -ForegroundColor Green Write-Host "$((($PysicalMemory).Capacity | Measure-Object -Sum).Sum/1GB)GB" $TotalSlots = ((Get-WmiObject -Class "win32_PhysicalMemoryArray" -namespace "root\CIMV2" -ComputerName $Computername).MemoryDevices | Measure-Object -Sum).Sum Write-Host "`nTotal Memory Slots:" -ForegroundColor Green Write-Host $TotalSlots $UsedSlots = (($PysicalMemory) | Measure-Object).Count Write-Host "`nUsed Memory Slots:" -ForegroundColor Green Write-Host $UsedSlots If($UsedSlots -eq $TotalSlots) { Write-Host "All memory slots are filled up, none is empty!" -ForegroundColor Yellow }[/quote]

:)

 

DDR4 RAM


Hi,
How about testing DDR4 RAM with memtest86+ v5.01? I am running it now, but seems it isn't detecting my RAM. Shows RAM: 0 MHz (DDR3 - 0) - BCKL: 0
Will this scan be correct, when will reach 8 passes?
Thanks.

 

DDR4 RAM

MemTest86+ - Test RAM | Windows 10 Tutorials

 

Ram problems

Hi,

To better assist you, please answer the questions below.

• What is the full specifications of your computer?
• Which type of RAM are you trying to install?
• Have you checked if the total RAM is detected in the BIOS?
• Have you tried installing just the 8 Gb RAM and see if the system detects it?
  

We suggest that you contact the computer manufacturer for information on how to enter the BIOS and how to set the default settings. Also, you can ask them if there is an available update for the BIOS.

We're looking forward to your response.