Part of the Best 10 Singapore Glossary › Tech & Gadgets › Thermal Throttling
Thermal throttling is when your laptop’s CPU or GPU automatically slows itself down to prevent overheating damage. The result: your laptop feels fast at first, then becomes noticeably sluggish after 10–15 minutes of demanding use.
How It Works
When the chip temperature approaches its maximum safe threshold — typically 90–105°C depending on the processor — the chip automatically reduces its clock speed to generate less heat. In Singapore’s year-round heat and humidity, laptops are particularly prone to throttling because ambient temperatures give the cooling system less headroom.
Signs Your Laptop is Throttling
- Laptop runs fine for 10–15 minutes, then becomes very slow
- Fan spinning at maximum speed constantly
- Frame rates drop suddenly during gaming
- Video rendering or exports slow down partway through
- CPU/GPU clock speeds drop significantly under load (visible in HWiNFO)
Common Causes & Fixes
| Cause | Fix | Cost (SGD) |
|---|---|---|
| Dried thermal paste | Repaste with quality compound (e.g. Thermal Grizzly) | $50–$100 |
| Clogged heatsink/fan | Deep cleaning of fan and heatsink fins | $50–$80 |
| Failing fan | Fan replacement | $80–$150 |
| Inadequate cooling design | Liquid metal application or laptop cooling pad | $120–$200 |
Related Articles
Best Laptop Repair Singapore (2026) — shops including thermal specialists.
What is Thermal Paste? →