It's typical to experience this change. The update is being applied smoothly.
It's typical to experience this change. The update is being applied smoothly.
For AM5 CPUs the heat dissipation is quite poor since AMD chose to maintain the same thickness as AM4 processors to ensure compatibility with AM4 coolers for AM5; this was a poor choice as shown by some users who removed excess material from the IHS on AM5 chips and lowered temperatures. Nonetheless, it’s important not to over-tighten the cooler. Follow the instructions carefully: tighten all four screws evenly—turn the top left screw fully, then the lower right, repeat for the others—until you reach the recommended tightness.
I was just discussing this a lot today. There are thousands of comments with answers suggesting you're looking for a better TIM or mount, as if they’re reading these figures on a large screen. Your system has L3 cache built into your cores, and AMD did a good job by adding a temperature sensor inside it. If the L3 cache stays cool, your IHS remains well-regulated. The heat from the core must travel through this cache, creating extra thermal resistance between the core and the cooler—similar to a thicker IHS or more resistance at the interface. The sensor can pinpoint where this resistance is highest. If the cache gets too hot, heat isn’t being removed efficiently from the IHS. Your readings are just a bit higher than what my 240 reported before I upgraded fans and changed it, aiming for better temperatures and matching your benchmarks. This process often requires several attempts—remounting, fan upgrades, adding a 360, and adjusting voltage—to achieve solid gains. The biggest boost you’ll see is likely in the high 14k range if full boost is supported, with minimal impact on game performance. If your monitoring software shows red values, it might be worth exploring further. I’m not sure if the B450 board came with a combined BIOS update, but if it did, enabling it could help. Otherwise, using PBO2 in Windows to adjust settings manually or schedule them at startup might be useful. You can also tweak your cooling setup, but keep the L3 cache data in mind—it’ll guide whether you need more aggressive cooling or just fine-tuning.
I don’t know how your cooler performed with the 3700x versus the 5800x3D. The first model has a 65 Watt TDP, while the second is 105 Watts. A CPU that worked well before would likely still function on a decent cooler, but not optimally. The safe upper limit for the 5800x3D is around 90°C before it throttles. If it took longer to hit that mark, you probably need better cooling. Reaching that temperature quickly suggests poor heat transfer from CPU to cooler or a non-running pump. Check your connections and listen for the pump noise. Software showing RPM would be useful too. Feel the tubing near the CPU—if it’s extremely hot only at the CPU end, the pump is likely faulty.
Sure, I understand your point. The images seem excessive, almost spilling out from the sides—you can notice some thermal paste along the outer edge of the socket. A thin layer between the CPU and cooler works best. Given the 3D cache on top, it’s better to spread the paste slightly rather than just a tiny dot. Also, due to the 3D cache, the chip will run hotter compared to a standard model without it. This aligns with what @AtomAlchemist mentioned.
I work with a NZXT Kraken X53 240mm setup, maintaining around 80°C while ambient stays between 21-23°C during Cinebench R23 tests on my 5800X3D. Based on comparisons in the videos, the X53 seems to perform similarly, suggesting a minor variance unless temperatures rise significantly. Assuming fans and the pump are functioning properly, other factors likely aren't causing overheating beyond what’s typical for high ambient conditions. For reference, my clock speeds in Cinebench range from 4.15 to 4.25 GHz, with scores between 14,300 and 14,500 depending on temperature. If I hit 90°C but still see boosts above 4.0 GHz, it’s normal behavior—boost continues despite high temps. Check HWInfo for L3 cache temperatures; recent tests show cores reaching up to 85°C and cache peaking at 50°C. This indicates effective cooling. Adjusting voltage with PBO Tuner could push boosts to around 4.4 GHz across all cores.