The PC fails to boot after adding new RAM.
The PC fails to boot after adding new RAM.
I purchased four 16GB Trident Z DDR4 4800 RAM sticks. After installation, my PC doesn’t recognize the standard D.O.C.P profile. Setting RAM to 2666 causes issues. What’s going wrong? Thank you for your support.
This setting won't work in XMP. The best I've found so far boots up to around 4400MT/s, most at 4200 or less. At that level, switch to 1:1 mode (between 3600 and 4000MT/s based on your CPU's FCLK). If you're still within the acceptable range, drop those kits and either upgrade for speed or opt for a cheaper option. The 4800 CL20-30-30 isn't really fast because of its poor timing performance. Also, X3D chips aim to make memory speed less important, so a budget 2x32GB kit at 3200CL16 should perform similarly to a more expensive 3800CL14 setup—roughly the same memory configuration you'd get with a Ryzen 5000.
AMD Ryzen processors aren't ideal with four RAM modules running at maximum clock speed. You might consider boosting the supply voltage by a small amount. Have you attempted configuring it manually rather than depending on DOCP?
I haven’t handled it by hand yet. I’ll attempt to increase the voltage now.
Manual control isn't feasible here. The memory controller simply lacks the capacity for this many sticks at such high speeds. Even with just two sticks, handling 4800 remains challenging on AM4, often requiring some fine-tuning to start and maintain stability. It's not that 4800 is significantly quicker than 3800MT/s in general.
You shouldn’t try to return it, as it’s been safely stored by a relative. To help them perform well, focus on providing clear guidance and support tailored to their needs.
Oof, that's quite a powerful RAM setup you're going for. And four sticks mean you're relying on luck. Speed gains drop off after 3600 and 4000, so beyond that synthetic results are the only way to go.
Adjust all configurations to disable XMP/DOCP and ensure it remains off. Configure memory speed at 3600MT/s, clock frequency at 1800MHz, and set UCLK DIV1 Mode to match the memory clock. Use a voltage around 1.4V (up to 1.55V is acceptable), and define SOC voltage at 1.15V. Assign timings tCL-tRCD-tRP-tRAS as 20-30-30-50, adjusting tRCDRD and tRCDWR accordingly. After initial setup, verify boot functionality. These parameters should generally function, though stability may vary with voltage changes. Gradually reduce memory timings one by one until the system fails, then test higher voltage or slower speeds to identify bottlenecks. Continue stress testing overnight using tools like TestMem5 with Anta777 Extreme1 preset, keeping in mind that results may depend on specific hardware behavior.