Nigeria's ambient temperatures — often 30–38°C — mean PC cooling margins are tighter than in temperate climates. A system that runs fine in a European office might throttle or crash in Lagos or Abuja. Here's how to diagnose and fix overheating.
Normal vs Dangerous Temperatures
Use HWiNFO64 or HWMonitor to read temperatures under load. Safe targets at full load:
- CPU: under 85°C (throttling typically starts at 90–95°C)
- GPU: under 83°C (most GPUs throttle at 83–87°C)
- SSD (NVMe): under 70°C
If you're exceeding these under normal workloads, action is needed.
Step 1: Clean the Dust
Dust is the most common cause of overheating in Nigeria. Harmattan season moves fine dust through every gap. Even a light dust coat on heatsink fins dramatically reduces airflow. Open the case, use compressed air (not a vacuum — static risk), and clear all fans, heatsinks, and filters. Do this every 3–6 months in Nigerian conditions.
Step 2: Check Airflow Direction
Fans should create a clear path: cool air in from the front and bottom, hot air out the back and top. Common mistakes: rear fan installed backwards (intake instead of exhaust), or all fans blowing in the same direction creating pressure imbalance. Verify fan direction — the sticker side faces the direction of airflow.
Step 3: Reapply Thermal Paste
CPU cooler thermal paste dries out over 2–5 years and loses conductivity. If your CPU runs hot even after cleaning, remove the cooler, clean old paste with isopropyl alcohol, apply a pea-sized amount of quality paste (Arctic MX-4, Noctua NT-H1), and reseat. This commonly drops CPU temps by 10–15°C on older systems.
Step 4: Improve Case Airflow
A case with poor ventilation in a hot room is a constant battle. Ensure intake fans have clear paths — don't push the case against a wall or into a cabinet. If the room lacks air conditioning, consider a case with mesh front panel and additional intake fans. Sephora Systems cases are selected for optimal airflow performance in tropical conditions.