Mystery Update – Changed from 2x24 to 4x24 but stuck at 3200MHz; DOCP not functioning.
Mystery Update – Changed from 2x24 to 4x24 but stuck at 3200MHz; DOCP not functioning.
Hello everyone. I recently increased my RAM from 2x24GB to 4x24GB, but after the change the system stopped working properly. I tried switching the DOCP profile to DOCP II, but it didn’t fix the issue. Turning off DOCP let the PC function normally with all RAM detected, though the speed dropped to 3200MHz instead of the expected 7200MHz. Restoring CMOS and removing the motherboard battery for 15 minutes didn’t help getting the four sticks to run at full speed. I should mention my BIOS is current. When I removed two sticks and only used slots A2 and B2, the PC operated normally with DOCP enabled, achieving 7200MHz and using all 48GB of RAM. - My system details: Ryzen 9 7950x3D, RTX 4090, Corsair Dominator Titanium @ 7200MHz, ASUS ROG STRIX B650-A GAMING WIFI 6E.
Did you check any information about this before purchasing? It would have been enough to raise some concerns about making this choice. Using four RAM sticks, particularly high-speed ones, isn't ideal for consumer systems. The performance depends heavily on the CPU's memory controller quality, and results will differ. Most users I've seen using 4x32 sticks on AM5 get speeds around 4600-5200 MHz, but that was for a different configuration. With 4x24 sticks, unless they're a dedicated kit, you'll likely hit limits above 4800 MHz. Even with an updated BIOS, manually adjusting speeds is usually beyond most people's skill level.
The additional kit you just purchased. Are you really requiring more than 48 GB of RAM? What is your specific application? https://rog.asus.com/us/motherboards/rog...vl_memory/ This should guide your buying choice according to your needs. Your QVL should focus on matching the available options in your region with the amount you actually require. A solid option would be 2x48 GB for capacity, but it offers a speed of 5600 MHz.
Exceeding DDR5 6000 on AM5 isn't recommended. You'll likely run in 2:1 mode, which significantly hurts performance versus 1:1. Achieving dual rank memory at 7200 is impressive, especially with four DIMMs, but lowering the speed to 6000 and using timings around 30-38-38-30 can help. Running 4x24GB isn't ideal, though it should work if you're familiar with the setup.