Das Ryzen 9 5950X zeigt bei Unterschreiten der empfohlenen Spannung Probleme.
Das Ryzen 9 5950X zeigt bei Unterschreiten der empfohlenen Spannung Probleme.
Hello everyone, I hope you're all well. I'm from Spain and since it's summer, my city is really hot. I decided to lower the voltage on my 5950X using a NH-D15 double fan. After running the CTR 2.0 diagnostic, the recommended settings were 1v and 3975mhz, but during testing a BSOD occurred and the PC restarted by itself. How can I make this undervolt more stable? The values suggested by the program seem to work, but I'm not sure. Thank you all for your help.
You don't have to manually adjust the voltage settings on a Zen 3 CPU. PBO now offers mostly automatic undervolting:
You might need to upgrade to the newest UEFI firmware.
Restore the CPU values to their default state.
Navigate to the PBO options in your BIOS (typically under "AMD Overclocking" or another menu, not directly for clock speed adjustments).
Choose PBO mode as "Advanced" or similar. This will display all available settings.
Disable "PBO Limits" to let the CPU use the standard power profile instead.
Enable the "Curve Optimizer" feature.
Adjust the optimizer to "Negative."
You can specify a value per core or for all cores, with a maximum of 30. Begin testing with this setting and run a Cinebench R23 stability check. If it doesn't work, reduce the value by a few points until the processor stabilizes.
If needed, you can fine-tune each core individually, though that may be quite time-consuming with your device.
For added benefit if your CPU stays cool, raise the frequency cap in the PBO settings.
I applied these changes on my 5600X. Voltages stay below 1.35V, and the highest boost observed is 4.8GHz under a 4.4GHz all-core load. The temperature remains under 55°C in a room around 26°C, reaching about 65°C during a Cinebench R23 run.
1v is significantly too low for stable operation even at 3975Mhz. Consider using 1.9 or 2.0v. Aim for at least 1.19v or 1.20v. The processor can safeguard itself by remaining idle in AUTO mode, monitoring core temperature and adjusting clocks and voltage to keep things safe.
I've reviewed numerous articles about using -10 negative all cores recently. To achieve lower temperatures, reduce the PTT setting. The negative core adjustment usually involves core stretching (though not always). It only took me a while to understand that even -10 was somewhat unstable...
Also, it's a good idea not to manually adjust the voltages for the CPU. You might want to try running it in eco mode and observe the temperatures, honestly. What are your maximum CPU temperatures?
This thread was opened because you didn't provide a response or show any reaction to the questions.