Problems with dual channel

Discussion created by temoden on Aug 17, 2019
Latest reply on Aug 26, 2019 by rodrox


Board: B350 Tomahawk
BIOS:  American Megatrends Inc. 1.M0, 1/23/2019
VGA:   EVGA GTX 1050 Ti
PSU:  Aerocool VX-700 700W (ACPN-VX70AEY.11)
CPU:  Ryzen 3 1200
MEM: 2x8GB, 3000MHz Corsair CMK16GX4M2B3000C15
HDD/SSD: Samsung HD753LJ 750GB 7200 RPM SATA 3.0Gb/s, Kingston SA400S37120G
COOLER: none apart from box CPU, VGA and PSU coolers (stress tests were made, all temps are below 70C after 15 minutes of stress testing)
OC:  CPU @3.8GHz at first, now stock 3.1GHz
OS: Windows 10 64bit Enterprise


X-post from MSI forum because they were unable to help me. I nees dome help. i've tried fighting this issue for over 3 weeks now.

So i've tested both sticks in different combinations of slots.
End results:
1.B1+B2 or B1+A2 or A2+A1 (single channel variations) are working fine. BIOS warns me that i'm using sticks in non-optimized slots (and shows me in pictures that i have to insert them in A2+B2 slots), but it sees both sticks and says that i have 16Gb of RAM in total.
2. A2+B2 or A1+B1 (dual channel variations) are not working properly. Upon booting PC gives me 3 long beeps (bad ram) signal, and proceeds booting. In BIOS it sees both sticks in both slots, 8Gb each, but then says that i have 8Gb in total.

I've tried testing sticks, both are working normally on their own. Don't even know where to look to find a clue of what's wrong.

Thanks in advance.