Performance drops significantly when temperature falls below 90°C
Performance drops significantly when temperature falls below 90°C
I recently changed my CPU from a 3600 to a 5800X and am experiencing thermal throttling during stress tests, especially with R23. When checking HWInfo, both HTC and PROCHOT EXT thermal limits drop after temperatures exceed 80°C. I've adjusted PBO settings but still face performance drops or constant throttling (reaching a max score of 13,000 R23 in 10 minutes). After multiple restarts and reseats, the throttling seems to occur before reaching 90°C. I've read extensively on forums, but I'm unsure if my older budget motherboard is the cause. My knowledge of PBO or curve optimization might be contributing too. I'm at my limit and would appreciate any HWInfo or Ryzen Master details you can share. System status: below; thanks ahead! CPU: 5800X Cooler: 212 Evo (2 fans, push-pull) Motherboard: MSI B450M A PRO MAX RAM: 2 x Corsair VENGEANCE 16GB (2 x 8GB) DDR4 (3200MHz C16) GPU: 5700XT Case: Corsair 4000D Airflow (3 Noctua NF P12 reduc 1700RPM fans in front, standard case fan back)
The Cooler Master 212 Evo isn't sufficient for a 5800X. It works well with a 3600 because it's a low-power CPU, but the 5800X requires more cooling power. You'll need a higher-performance cooler.
I'm curious about whether the B450 chipset's design affects CPU performance by throttling it outside of its own capabilities. Many B450 and B550 models need a BIOS update to support 5000-series processors, which could explain why the specs seem off. Did you need an update for the 5000-series? If not, it might be contributing to your problem.
The VRM performance is lower than expected. CPU temperatures at 80°C don't indicate throttling. Enhance airflow around the VRM—consider a fan directed onto it or adding a rear exhaust fan. A rear exhaust, top rear exhaust, and front intake setup could help. Also, using the newest BIOS versions for Agesa 1207 is recommended. The Hyper 212 Evo still uses front intake fans and rear exhaust fans.
I'm considering this idea but haven't noticed anyone reaching this conclusion yet. I updated the BIOS before installing the 5800x, and according to what I read, it did require an update for proper operation. I plan to test the fan placement directly on the VRM for ten minutes. Regarding cooling, I'm thinking about adding VRAM heatsinks as well. I'm using the latest V7C52v3G BIOS with Agesa 1207. For fans, the 212s are correctly installed. I originally had a top rear exhaust instead of the second fan on the 212, but it overheated. I have three Noctua fans in the front—would you recommend using just one front intake, one rear exhaust, and one top exhaust?