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Question system 8 GB reserved memory out of 16GB windows 10 DDR4 2400 MHZ

Jun 26, 2020
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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
 
Jun 26, 2020
2
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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
 

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