High temperatures on the Ryzen 7 5800X3D are puzzling.
High temperatures on the Ryzen 7 5800X3D are puzzling.
Hey there, I'm trying to figure out what to do next. I just upgraded to a Ryzen 7 5800X3D and thought it would help with the stacked L3 cache. After installing it with other upgrades, I powered on my PC and checked the temperatures. It was idling around 50-60°C, but spiking up to 80°C on the desktop. When I started Minecraft, loading a world caused the temps to jump to about 90°C for a short time. I used a Corsair H100i Platinum, which should perform better. I replaced the paste and even tried a different air cooler because I suspected my AIO might be faulty. After installing a quieter cooler (Be Quiet Dark Rock TF2), the temps stayed similar on a cooler with 230W power delivery. I’m pretty sure the installation is solid since I’ve reset it multiple times. I also ran Cinebench R23, but the temps kept rising to 90°C and my chip throttled to 3700MHz. It’s confusing—I really don’t know what to try next or if there’s something I’m missing. (Maybe I overlooked something.) Edit: My motherboard is a ROG B-550 F-Gaming, with the latest BIOS updates. The case is a Corsair 220t Airflow featuring four fans running from front to back. Updated on November 13, 2023 by real_poiuz
You're seeing ~14k Cinebench R23 scores, which is usually acceptable. 3D v-cache CPUs tend to heat up and approach thermal limits because of the extra thermal layers between the CPU die and the IHS. Each layer has its own temperature change rate, which raises the overall die temperature. In short, a non-lidded 5800x3D should behave similarly to a standard lidded 5800x. It helps to try different power plans—'high performance' can cause spikes and lower boost clocks, while 'balanced' is better. Make UEFI your default setting except for the 3600MHz DOCP RAM profile, as FCLK runs there are around 1800MHz. If you notice issues, it might point to a solder problem between die and IHS, which could be worth fixing professionally rather than risking further damage.
Choose a solid 360mm AIO lens, the H100i feels a bit outdated and that could contribute to overheating. As mentioned before, "3D V-Cache" CPUs tend to run warmer compared to those without it.
Sorry, I missed adding those details. My post should now reflect the ROG B-550 F-Gaming setup with the latest BIOS and Corsair 220t Airflow case featuring four fans.
I finally decided to run a complete Cinebench test and achieved a 10k score. I also tried setting the UEFI to default and reducing voltages, but neither helped. I plan to return the chip until I can afford a better cooling system.
Attempt a PBO offset of -15 or -20 and re-evaluate. A satisfactory outcome may appear. Verify if your board experiences overvoltage—it could indicate an issue beyond the CPU. For a cooler AM4 processor, the 5700X might be a better option.
It seems there might be a physical issue with the chip causing thermal constraints. A more effective cooling method wouldn't help because even a Hyper 212 is adequate for the 5800x3D. The main challenges aren't just heat capacity but latency in heat soak and transfer efficiency. As long as you have a solid cooler, it should suffice. The chip's max power is around 120W, but it's throttling to about 100W. You could try using the Overclocking settings to adjust core configurations—start with default values and tweak them to find a stable setting. Alternatively, run single-threaded benchmarks like Cinebench R23 with Processor Affinity set to one core per thread, disabling it to see which core is bottlenecking performance.