[SOLVED] system 8 GB reserved memory out of 16GB windows 10 DDR4 2400 MHZ

[rahulrana999]

Hi,

I have recently upgraded from 8GB RAM to 16GB ram on my PC.

I am facing an issue of hardware reserved in windows 10.

If i go into BIOS settings change the RAM frequency from AUTO to 2400MHZ, its start showing full size 16GB.

But after sometime it will come back to 8GB (until i reboot my PC) . Then again i will go into BIOS mode and change back to AUTO for getting full 16 GB size.

I have tried msconfig--> advanced --> Memory should be 0 solution.

I have tried removed memory from DIM slots exchange them and vice versa.

I am using

PRIME-A320M-K-ASUS-5409 motherboard
crucial 2400MHZ 8GB RAM (8*2)
AMZ ryzen 1500 X CPU
Nvidia Geforce GTX 1060 6GB

Any help will be appreciated.

Thanks
Rahul

 

[rgd1101]

mixing ram not in 1 kit sometime does that.
what the exact model/spec of these 2 stick?

 

[rahulrana999]

mixing ram not in 1 kit sometime does that.
what the exact model/spec of these 2 stick?

Its the same model... i have make sure before ordering that.

Crucial 8GB DDR4 1.2v 2400Mhz CL17 UDIMM RAM Memory Module for Desktop

I am not sure about CL17 in it but i have check the model info in CPUID CPU-Z software as well, its the same.

Memory SPD
-------------------------------------------------------------------------

DIMM # 1
SMBus address 0x50
Memory type DDR4
Module format UDIMM
Module Manufacturer(ID) Crucial Technology (7F7F7F7F7F9B0000000000)
SDRAM Manufacturer (ID) Micron Technology (2C00000000000000000000)
Size 8192 MBytes
Max bandwidth DDR4-2400 (1200 MHz)
Part number CT8G4DFD824A.C16FDD2
Serial number 194E8376
Manufacturing date Week 42/Year 17
Nominal Voltage 1.20 Volts
EPP no
XMP no
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 10.0-10-10-24-34 @ 727 MHz
JEDEC #2 11.0-11-11-26-37 @ 800 MHz
JEDEC #3 12.0-12-12-28-40 @ 872 MHz
JEDEC #4 13.0-14-14-31-44 @ 945 MHz
JEDEC #5 14.0-14-14-33-47 @ 1018 MHz
JEDEC #6 15.0-15-15-35-50 @ 1090 MHz
JEDEC #7 16.0-16-16-38-54 @ 1163 MHz
JEDEC #8 17.0-17-17-39-55 @ 1200 MHz
JEDEC #9 18.0-17-17-39-55 @ 1200 MHz
JEDEC #10 19.0-17-17-39-55 @ 1200 MHz
JEDEC #11 20.0-17-17-39-55 @ 1200 MHz
JEDEC #12 21.0-17-17-39-55 @ 1200 MHz

DIMM # 2
SMBus address 0x51
Memory type DDR4
Module format UDIMM
Module Manufacturer(ID) Crucial Technology (7F7F7F7F7F9B0000000000)
SDRAM Manufacturer (ID) Micron Technology (2C00000000000000000000)
Size 8192 MBytes
Max bandwidth DDR4-2400 (1200 MHz)
Part number CB8GU2400.C8ET
Serial number E25198BF
Manufacturing date Week 24/Year 19
Nominal Voltage 1.20 Volts
EPP no
XMP no
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 10.0-10-10-24-34 @ 727 MHz
JEDEC #2 11.0-11-11-26-37 @ 800 MHz
JEDEC #3 12.0-12-12-28-40 @ 872 MHz
JEDEC #4 13.0-14-14-31-44 @ 945 MHz
JEDEC #5 14.0-14-14-33-47 @ 1018 MHz
JEDEC #6 15.0-15-15-35-50 @ 1090 MHz
JEDEC #7 16.0-16-16-38-54 @ 1163 MHz
JEDEC #8 17.0-17-17-39-55 @ 1200 MHz
JEDEC #9 18.0-17-17-39-55 @ 1200 MHz
JEDEC #10 19.0-17-17-39-55 @ 1200 MHz
JEDEC #11 20.0-17-17-39-55 @ 1200 MHz
JEDEC #12 21.0-17-17-39-55 @ 1200 MHz

DIMM # 1

Thanks
Rahul

 

[DSzymborski]

Its the same model... i have make sure before ordering that.

Crucial 8GB DDR4 1.2v 2400Mhz CL17 UDIMM RAM Memory Module for Desktop

Same model usually works, but not always. Only memory sold together is guaranteed to work together, even if the model is the same. Memory sold in kits are tested to be working together.

 

[rgd1101]

Up the voltage or try a looser timing(higher#)