F5F Stay Refreshed Hardware Desktop DDR5 memory appears as a single channel in the system.

DDR5 memory appears as a single channel in the system.

DDR5 memory appears as a single channel in the system.

K
KatLeCat
Junior Member
23
06-11-2021, 12:40 PM
#1
Hi, I see you're facing some problems with your ASRock Rack B650D4U-2L2T/BCM board. Both memory modules are detected but appear as single-channel in the setup tool. You've placed them in A1/B1 slots following the manual. The KVR48U40BD8-32 sticks are on a very short memory QVL. You've tried moving them to A2/B2, but the system still won't boot and isn't recognized as a supported setup. Swapping to different DDR5 modules didn't help either. You've checked reseating the CPU and adjusting the heatsink, and you've updated the BIOS. Any suggestions? Thanks! Radim
K
KatLeCat
06-11-2021, 12:40 PM #1

Hi, I see you're facing some problems with your ASRock Rack B650D4U-2L2T/BCM board. Both memory modules are detected but appear as single-channel in the setup tool. You've placed them in A1/B1 slots following the manual. The KVR48U40BD8-32 sticks are on a very short memory QVL. You've tried moving them to A2/B2, but the system still won't boot and isn't recognized as a supported setup. Swapping to different DDR5 modules didn't help either. You've checked reseating the CPU and adjusting the heatsink, and you've updated the BIOS. Any suggestions? Thanks! Radim

T
Theboss572
Member
184
06-13-2021, 05:22 AM
#2
Contact AsRock support for assistance.
T
Theboss572
06-13-2021, 05:22 AM #2

Contact AsRock support for assistance.

Z
ZebraZack
Member
53
06-17-2021, 10:20 AM
#3
Which CPU model are you running? Do you have an additional AM5 chip available for testing to check if it's a memory controller problem? Consider trying different pairings like A1/A2 with B1/B2, or other combinations.
Z
ZebraZack
06-17-2021, 10:20 AM #3

Which CPU model are you running? Do you have an additional AM5 chip available for testing to check if it's a memory controller problem? Consider trying different pairings like A1/A2 with B1/B2, or other combinations.

D
dpbigbear10
Member
162
06-17-2021, 12:18 PM
#4
You're welcome! Your Ryzen 9 7900 has been tested with various setups. Let me know if you need more help!
D
dpbigbear10
06-17-2021, 12:18 PM #4

You're welcome! Your Ryzen 9 7900 has been tested with various setups. Let me know if you need more help!

P
PhoIsGood
Junior Member
17
06-17-2021, 03:55 PM
#5
They stated they can't retrieve the current mode info from the CPU, which seems unusual since other boards handle it easily. It appears this might be a new issue I'm encountering. I'll need to test the memory performance to determine if it's using dual-channel mode.
P
PhoIsGood
06-17-2021, 03:55 PM #5

They stated they can't retrieve the current mode info from the CPU, which seems unusual since other boards handle it easily. It appears this might be a new issue I'm encountering. I'll need to test the memory performance to determine if it's using dual-channel mode.