[SOLVED] Help needed please!! 16GB (2x8 modules ) installed but each only showing 4Gb ????

Apr 21, 2020
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Motherboard - ASUS ROG Crosshair VI HERO
CPU - Ryzen 7 1800x ( soon to be upgraded to a Ryzen 9 3900x )
CPU Cooler - Fractal Design Celsius S36, 360mm All-In-One Hydro Cooler CPU Cooler, 3x 120mm P
GPU - EVGA GeForce GTX 1080 Ti Gaming Blower, 11GB GDDR5X Graphics Card 11G-P4-5390-KR
RAM - Corsair Dominator Platinum 16Gb (2x8) DDR4 3600Mhz
PSU - 750W EVGA SuperNOVA 750 G3, Full Modular 80 PLUS Gold, SLI/CrossFire Single Rail
Primary HD - Samsung 860 EVO 1TB (MZ76E1T0EU) Solid State Drive SSD
Secondary HD - Seagate 2TB 3.5" Internal Hard Disk Drive SATA III
Case - Cooler Master, Mastercase MC600P ( inc 3 x 120 internal fans )
OS - Windows 10 64Bit

Hi all, can some please help as I'm pulling my hair out!!! I have installed from new 2 x 8Gb modules ( Corsair Dominator Platinum 16Gb (2x8) DDR4 3600Mhz ) into a new build and the system posts fine. I am completely in stock settings on everything with latest bios and drivers etc but in windows and the bios the RAM is showing 4Gb in each of the two occupied slots? Is this normal or am I missing something??
I have removed and replaced one at a time, reversing the slots etc but still the same! Does anyone know if there is a setting I am missing in the Crosshair VI Hero BIOS that I have to enable or something. Is there anything I can do to prove the fault is with the RAM module or motherboard etc.
Any help or advice much appreciated as I have not been around PCs for many years ( a MAC user for 20+ )
Cheers
 
Apr 21, 2020
77
3
45
take the ram out and post the exact model here.

use cpuz to id the ram.
Hi rgd

Can't seem to attach a photo so long way .....

On the first module:
CMD16GX4M4B3600C18
DDR5 Gen6 i5/7 16GB (4x4GB) 3600MHz 18-19-19-39 1.35V ver4.23 154302329276161

Second module:
CMD16GX4M4B3600C18
DDR5 Gen6 i5/7 16GB (4x4GB) 3600MHz 18-19-19-39 1.35V ver4.23 154302329276162

in process of downloading the cpu and will post again shortly.
Thanks
 

DSzymborski

Titan
Moderator
would I be better off going for a new 570 motherboard as I am planning to install a Ryzen 9 3900x fairly soon. Would this also cure the memory issue?

You don't have a PC hardware issue, you have a purchase issue.

Again, if what you gave for the RAM modules is correct, you did not buy a 2x8 kit, you bought two sticks of RAM ripped from a 4x4 kit. Which means you have 8 GB of RAM and if the listing actually said this was a 2x8 kit, you got scammed.
 
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