D.O.C.P triggers a blue screen error.
D.O.C.P triggers a blue screen error.
Hello. The new RAM modules are installed correctly and default BIOS is functioning, showing 2133MHz. Switching to DOCP mode causes instability at 3200MHz. Previously, with DOCP3200 and 16GB RAM, everything worked fine for three years. After replacing the sticks, I mixed old and new ones—old in A2/B2, new in A1/B1—but no improvement was noticed.
Begin by manually adjusting the timing to match the XMP standard. If this fails, slightly relax the cas timing to 18 and test again. It might not be stable at 3200 RPM with four sticks, so if that doesn’t work, reduce the speed next. You could also experiment with a bit more voltage at 1.4V, but stay below that limit.
I own an Asus ROG STRIX B450F gaming rig. It comes with a Ryzen 5 2600X processor. The Corsair Vengeance RGB pro 2x8GB +2x8GB Sapphire Nitro+ RX 5700X Seasonic 750W power supply. I verified that both the old and new units match the specifications, model codes, and details. I purchased this model and believe previous versions are identical. I used the AI overclock tuner in Auto mode and adjusted the memory frequency to 3000, which now runs smoothly. The 3133 setting didn’t help either. Also, when I changed the AI overclock tuner to DOCP, a new tab appeared with an old preset that seemed meant for a 16GB configuration—no clear way to create or remove it. I’m not very familiar with BIOS settings and haven’t done much of the manual stuff.
Running 3200MHz on a second generation Ryzen setup is already challenging with two modules. Exceeding 2933 MHz adds significant complexity. RAM manufacturers don’t design the chips themselves; they source components from companies like SK Hynix, Samsung, Nanya or Spectec/Micron and then assemble them. This process mirrors how major brands such as MSI, Gigabyte, ASUS do with GPUs. The main difference lies in vendors selecting different suppliers for the same model, often based on cost targets before each production run. Consequently, a subsequent batch of the same model might use a distinct vendor and chipset. This situation is quite typical. You can use Thaiphoon Burner to gather this information from the modules. Click on Read, then pick a stick. It will display details about the vendor and die. Also, inspect the sticker on each module for the version number. This isn’t just a generic number—it’s an internal identifier indicating which vendor and chipset were used. The xx in the version refers to the chipset generation (Micron/Spectec, Samsung/4.xx, SK Hynix/5.xx, Nanya/8.xx). If the overall version doesn’t align, the modules won’t be compatible. Using parts from different suppliers reduces the likelihood of high-speed operation between them.