Bad luck 9800X3D overheating issue with 420mm AIO – reaches 90°C+
Bad luck 9800X3D overheating issue with 420mm AIO – reaches 90°C+
The issue appears to be inconsistent performance across different models. Many 9800X3D units reach around 5.4Ghz, but some exceptions exist. The reported 170+ watts at 1.25V seem significantly higher—about 15W more than other 9800X3D models at the same voltage.
It seems this process requires significantly higher voltage and power, triggering excessive heat. Not all chips are suitable for overclocking. (I think it's unreasonable, I prefer stable temperatures, minimal power use, and solid performance. That means I only undervolt, not the Asus laptop. I need to verify this further—I feel it would work better with less heat and possibly a PBO undervolt.) Also, keeping temperatures around 92°C might be better than aiming for 5.400; sustained high temps usually cause issues sooner.
OCCT isn't detecting RAM low bin issues, maybe it's a coincidence. The 9800x3D model is rated for 5.2Ghz boost, so you're likely surpassing that. Compared to other 9800x3D chips, your CPU consumes more power at the same voltage, suggesting a less powerful die that was boosted more. Whether it has 0.1Ghz or full 1Ghz overclock, it still meets the advertised speeds. It seems 9800x3D might be using lower-quality chips than 9700x, possibly due to the need for a higher boost clock in the latter. Interestingly, 9700x requires a 5.5Ghz boost at launch: https://www.techpowerup.com/cpu-specs/ry...700x.c3651. Also, its power consumption appears lower, which could relate to the large L3 cache affecting performance. TL;DR: it's probably just bad luck. In 2025, overclocking feels like a tough challenge—modern PCs are nearly unmodifiable, except for minor tweaks or premium parts like AM5 CPUs that run hot unless you have a big cooling solution.
The power output has dropped to around 150W under full load. The voltage remains sufficient for stability at 1.26V in BIOS. The exact BIOS adjustment is unclear, but it accounts for nearly a 30W variation.
These CPUs aren't designed for fixed clocks and voltages. They can manage a clock and voltage, but slight variations will always occur. You might be able to lower all core speeds to a consistent pace, but AMD's core speed ratings will complicate the process unless you have an unusual solution. To clarify, the threads on CCD1 will reach 58xx speeds, while CCD2 lags behind at 200MHz or less. Running all cores at 5800 would require significant voltage adjustments, possibly limiting performance to medium tasks like Cinebench. As observed with Linpack, the actual running speed is around 5300MHz.