Ryzen 3900x paired with 64GB RAM at 3600MHz may encounter DOCP problems.
Ryzen 3900x paired with 64GB RAM at 3600MHz may encounter DOCP problems.
You've recently upgraded to a Ryzen 3900X with 64GB Corsair Vengeance Pro 3600mhz. If you turned on DOCP, the system won't start properly. When DOCP is off, everything works fine. You've already updated the BIOS but still face this problem. Your motherboard is an Asus X570-F Gaming. Any advice would be welcome.
I just reviewed the QVL list and noticed my RAM isn't listed under the 3rd gen Ryzen but appears in the 2nd gen Ryzen section. The module part number is CMW16GX4M2Z3600C20.
The RAM is now operating at 3200mhz and appears stable. I'll run a memtest to check for any issues.
The CPU's integrated memory controller might struggle with 64GB RAM at that speed and with four DIMMs. It's likely to boot up with DOCP active if only two DIMMs are used. You might have to accept a lower clock speed or use the Ryzen DRAM Calculator to set the frequency and timings yourself to reach 3600MHz. This approach could succeed or not. You can also examine the original timings and adjust them, or gradually raise the memory voltage up to 1.4V to see if it boots. My Corsair Dominator Platinum RGB kit runs at 3000MHz CL15 by default, but it's actually two kits in a 2x8 setup totaling 4x8. I achieved a stable 3600MHz CL16 overclock using custom timings and 1.37V on an X370 board, which significantly boosted performance.
I have a comparable setup with my Flare X native 14-14-14-34 at 3200mhz on an X370. Upgraded to 4x8 and set to 16-17-16-34 at 3600mhz. @dialatech2303 It tends to be selective with third-gen chips, often not accepting 4 sticks at high speeds most of the time. Generally, you can maintain around 3200mhz with 4 sticks on third-gen without significant timing adjustments to boost performance. You can use the latest DRAM calculator to assist in determining optimal timings for peak efficiency and stability: https://www.techpowerup.com/download/ryz...alculator/