High temperatures on the 7800X3D
High temperatures on the 7800X3D
I recently bought a Ryzen 7 7800X3D to swap in for my 5600, alongside my old Noctua NH-15. During a stress test yesterday on Cinebench R23, I observed the CPU package reaching close to the 89°C threshold and also noticed elevated idle temperatures. After replacing it with Arctic Silver 5, idle temps dropped, but under load the package still seems near that limit. However, it looks like the actual CPU cores aren’t consistently hitting 89°C. I’ve attached some screenshots for reference. It’s worth mentioning I’m running a fairly aggressive fan curve with the Fractal Design Pop Silent case and have applied a -10 PBO power profile with a +200MHz boost. The CPU still seems stuck around 4.8GHz. Anyone familiar with a 7800X3D can confirm if these temperatures are typical? Thanks, Tom!
It looks a bit excessive. He checked performance on an open test bench: https://hwbusters.com/cpu/amd-ryzen-7-78...alysis/10/
It wasn't clear whether the issue occurs at the package temperature or the CCD temperature. When the CCD is involved, my CPU seems to align correctly with the review, but with the package it runs excessively hot.
It works in Blender. Check out this one using NH-U14S here: https://www.techpowerup.com/review/amd-r...3d/25.html
Check Blender benchmarks alongside HWinfo64 (sensors only) running simultaneously at https://opendata.blender.org and https://www.hwinfo.com/download
It doesn’t look too bad to me. The 90C isn’t a big problem on AMD 7000 chips—they throttle at 95°C. Then the 7800X3D stays hot across all cores because of the 3D cache. The DH-15 is also known for not performing well with AMD 7000 due to its outdated design (from 2014/LGA1150) and the fact that it doesn’t match the chip’s IHS layout properly. Many heatpipes aren’t placed effectively, which is why newer coolers like TR PA140/PE120 or Deepcool models show better results in tests.
The 7800X3D features an 89°C TjMax, while the X3D processors consistently run cooler because of the v-cache.
Tctl and Tdie will remain consistently warm. I recommend opting for hwinfo64 over hwmonitor. Arctic Silver 5 paste is somewhat old. https://www.guru3d.com/review/guru3d-the...1/page-12/
I’d have to concur—it might be overlooked for high-end Intel models. The heat pipes aren’t optimally positioned for Ryzen setups. That’s why my Deepcool AS500 performed better than the NH-D15 on my 5950X, thanks to better alignment of the heat pipes with the CPU chiplets. I also own an AK620 on a 7800X3D, which maintained around 82°C during an all-core stress test.