Thermal and Performance Issues Found in HP EliteDesk 805 G8 Mini PCs
Users have reported significant overheating and performance drops in HP EliteDesk 805 G8 mini PCs due to poor fan control. The system fails to speed up the fan under load, causing the CPU to slow down to prevent damage.
According to discussions on the r/HomeServer subreddit, the HP EliteDesk 805 G8 often suffers from aggressive thermal throttling. This happens because the internal fan control logic keeps the fan at low speeds even when the processor is under heavy stress. In some cases, the CPU clock speed drops from high performance levels down to as low as 1.4 GHz. Another contributing factor can be a mismatch where a high-power 65W processor is paired with a smaller 35W cooler. For Mac mini server users, this highlights the stability advantages of well-integrated cooling systems and the potential maintenance hurdles of alternative hardware.
Key points
- Faulty fan logic prevents the fan from ramping up during intensive tasks
- CPU may throttle down to 1.4GHz to stay within safe temperature limits
- A common fix is manually increasing the 'Idle Fan Speed' in the BIOS settings
- Ensure the heatsink matches the CPU power rating (35W vs 65W)
- Replacing factory thermal paste with higher-quality material can lower temperatures
Quick term guide
- server
- A computer that stores files and shares them with other devices in your home.
- subreddit
- A topic-specific community inside Reddit where people post and discuss related content.
- Throttling
- A safety feature that slows down a computer's processor to prevent it from overheating.
- Mac mini server
- A Mac mini used as an always-on computer for files, apps, backups, or automation.
- Mac mini
- A small desktop computer made by Apple.
- hardware
- The physical parts of a computer that you can touch.
- temperature
- A setting that controls how random or creative an AI's output is — lower means more predictable.
- Thermal Paste
- A special substance applied between the CPU and cooler to help transfer heat efficiently.