How to lower GPU temperature is one of the most searched PC gaming questions — because hot GPUs throttle, crash, and die younger. If your GPU hits 85°C+ under load, you’re losing performance and risking hardware damage.
We’ve tested 15 methods to lower GPU temperature, from 5-second software tweaks to 30-minute hardware fixes. Here’s what actually works, ranked by impact and difficulty.
For full PC optimization, see our PC optimization guide.
What’s a Safe GPU Temperature?
| Temperature Range | Status | Action |
|---|---|---|
| 30-50°C | Idle — excellent | None needed |
| 50-65°C | Light load — good | None needed |
| 65-75°C | Gaming load — normal | Monitor |
| 75-85°C | High load — acceptable | Consider improvements |
| 85-90°C | Thermal throttling starts | Fix now |
| 90°C+ | Danger zone | Fix immediately |
NVIDIA GPUs throttle at 83-90°C (varies by model). AMD GPUs throttle at 90-110°C (junction temperature). Both will reduce clock speeds to protect themselves, causing FPS drops and stuttering.
Quick Fixes (5 Minutes or Less)
1. Increase Fan Speed (−5 to −15°C)
The fastest GPU temperature fix. Most GPUs run fans at 60-70% by default to keep noise down. Increasing fan speed dramatically reduces temperatures:
- NVIDIA: Install MSI Afterburner → set custom fan curve → set 80-100% fan at 75°C+
- AMD: Use AMD Adrenalin → Performance → Tuning → set fan curve to 80-100% at 75°C+
Trade-off: More fan speed = more noise. 80% fan is a good balance. 100% fan is loud but keeps most GPUs under 75°C.
2. Remove Dust from Fans and Heatsink (−5 to −10°C)
Dust blocks airflow through the heatsink fins. If you haven’t cleaned your GPU in 6+ months, compressed air can reduce temps by 5-10°C:
- Power off and unplug your PC
- Open the case
- Use compressed air to blow dust out of the GPU heatsink and fans
- Hold fan blades still while blowing (spinning fans can generate voltage)
- Reassemble and test
3. Improve Case Airflow (−3 to −8°C)
Your GPU needs fresh air. If your case has poor airflow, the GPU recycles its own hot air:
- Ensure front intake fans are running
- Ensure rear/top exhaust fans are running
- Remove any drive cages blocking front-to-back airflow
- Clean cable mess that blocks airflow paths
Ideal fan setup: 2-3 front intake + 1 rear exhaust + 1-2 top exhaust. Positive pressure (more intake than exhaust) prevents dust buildup.
Software Fixes (15 Minutes)
4. Undervolt Your GPU (−5 to −15°C)
Undervolting reduces GPU voltage while maintaining clock speeds. Less voltage = less heat = same performance. This is the best software fix for GPU temperature:
- NVIDIA: MSI Afterburner → Ctrl+F (voltage curve) → set 900mV at your target clock speed → apply
- AMD: Adrenalin → Tuning → GPU → reduce voltage curve → test stability
Typical results: RTX 5070 at 900mV runs 10-15°C cooler with 0-2% performance loss. AMD RX 9070 XT undervolted runs 8-12°C cooler.
Test stability with 30 minutes of a demanding game. If it crashes, increase voltage by 25mV and try again.
5. Cap Your Frame Rate (−3 to −10°C)
Uncapped frame rates push your GPU to 100% usage constantly. Capping at your monitor’s refresh rate (or slightly below) reduces GPU load significantly:
- NVIDIA: NVIDIA Control Panel → Manage 3D Settings → Max Frame Rate → set to monitor refresh rate
- In-game: Most games have frame rate limiters in settings
- RivaTuner: Use RivaTuner Statistics Server (bundled with MSI Afterburner) for per-game limits
Example: A 144Hz monitor with frame rate capped at 144 FPS reduces GPU load from 100% to 70-80%, lowering temps by 5-10°C.
6. Lower Graphics Settings (−5 to −15°C)
Reducing GPU-intensive settings directly reduces heat output:
- Ray tracing: Disable or set to low (biggest GPU load reduction)
- DLSS/FSR: Enable at Quality or Balanced (renders fewer pixels)
- Shadow quality: Set to medium (minimal visual impact, significant GPU savings)
- Volumetric effects: Set to low (fog, smoke, god rays are GPU-heavy)
- Texture quality: Keep at high (doesn’t affect GPU load much if you have enough VRAM)
7. Update GPU Drivers (−2 to −5°C)
New drivers often include power management improvements. NVIDIA and AMD regularly release driver updates that optimize GPU behavior:
- NVIDIA: GeForce Experience → Drivers → Check for updates
- AMD: Adrenalin → Check for updates
Hardware Fixes (30-60 Minutes)
8. Repaste Thermal Paste (−10 to −20°C)
If your GPU is 2+ years old, the thermal paste between the GPU die and heatsink has dried out. Replacing it is the single biggest temperature improvement for older GPUs:
- Remove the GPU from your PC
- Unscrew the heatsink (4-8 screws on the back)
- Clean old paste with isopropyl alcohol (90%+)
- Apply new paste (pea-sized dot or X pattern)
- Reassemble the heatsink
- Test temperatures
Best thermal pastes for GPUs:
- Thermal Grizzly Kryonaut ($8) — best non-conductive paste
- Noctua NT-H2 ($7) — excellent, easy to apply
- Arctic MX-6 ($6) — best budget option
Typical results: 2-year-old GPU with dried paste → repaste → 10-20°C lower temps. This is the most impactful fix for older GPUs.
9. Replace Thermal Pads (−5 to −15°C)
Thermal pads transfer heat from VRAM and VRMs to the heatsink. They degrade over time and need replacement. This is especially important for RTX 40/50 series cards where VRAM temperatures can exceed 100°C:
- Measure existing pad thickness (0.5mm, 1mm, 1.5mm, 2mm)
- Buy replacement pads of the same thickness
- Best thermal pads: Thermalright Odyssey (12 W/mK), Gelid Ultimate (12 W/mK)
Replace thermal pads at the same time as thermal paste — you’re already disassembling the GPU.
10. Add Case Fans (−3 to −8°C)
If your case has empty fan slots, adding fans improves airflow:
- Front intake: 140mm fans move more air at lower RPM (quieter)
- Rear exhaust: 120mm fan directly behind CPU
- Bottom intake: Direct fresh air to GPU (most effective for GPU temps)
Best budget fans: Arctic P12 PWM PST ($8 each) — excellent airflow, low noise. Buy 3-4 and fill every slot.
11. Reposition GPU (−2 to −5°C)
If you have a multi-GPU motherboard, move your GPU to the top PCIe x16 slot. The bottom slot has less airflow and shares bandwidth with other slots. Also ensure your GPU isn’t flush against a sound card or capture card — leave at least 1 slot of space.
Advanced Fixes (1-2 Hours)
12. Install an AIO GPU Cooler (−15 to −25°C)
Replace your GPU’s air cooler with a 240mm or 360mm AIO liquid cooler. This is the most effective temperature fix, but also the most expensive and involved:
- NVIDIA Founders Edition: Use NZXT G12 bracket + any AIO
- Custom models: Use Alphacool Eiswolf or Bykski water block
Typical results: RTX 5090 with AIO runs at 55-65°C vs 80-85°C on air. 20-25°C improvement.
13. Deshroud and Add Case Fans (−10 to −15°C)
Remove the GPU shroud (plastic cover) and replace the stock fans with high-static-pressure case fans (Noctua A12x25, Arctic P12). This is cheaper than an AIO and nearly as effective:
- Remove the GPU shroud (screws + clips)
- Unplug stock fans
- Zip-tie 2× 120mm fans to the heatsink
- Connect fans to motherboard fan headers
Typical results: 10-15°C lower temps with quieter fans. Cost: $20-40 for fans + zip ties.
14. Improve Room Temperature (−3 to −5°C)
Your GPU can’t cool below ambient temperature. If your room is 30°C, your GPU idle temp is 35-40°C minimum. Reducing room temperature by 5°C reduces GPU temps by 3-5°C under load.
15. Replace the GPU (Ultimate Fix)
If your GPU runs hot despite all fixes, it may have a defective cooler or be a model known for high temperatures (some RTX 4090 custom models run 85-90°C stock). Consider upgrading to a model with a better cooler. See our best graphics card guide.
Frequently Asked Questions
How do I lower my GPU temperature?
Start with the easiest fixes: increase fan speed (−5 to −15°C), clean dust (−5 to −10°C), and undervolt (−5 to −15°C). These three fixes alone can reduce temps by 15-30°C. For older GPUs, repaste thermal paste (−10 to −20°C).
What temperature should my GPU be?
Idle: 30-50°C. Gaming: 65-75°C (ideal), 75-85°C (acceptable). Throttle point: 83-90°C (NVIDIA), 90-110°C (AMD junction). If you’re above 85°C, apply fixes from this guide.
Is 85°C too hot for a GPU?
Yes. 85°C is where most NVIDIA GPUs begin thermal throttling (reducing clock speeds to protect themselves). You’re losing performance and shortening the GPU’s lifespan. Apply the fixes in this guide to bring temps below 80°C.
Does undervolting reduce performance?
Minimal impact. A proper undervolt maintains 98-100% of stock performance while reducing temps by 10-15°C. If you undervolt too aggressively, you’ll get crashes — increase voltage by 25mV until stable.
How often should I replace thermal paste?
Every 2-3 years for GPUs under heavy use. If your GPU temps have increased 10°C+ over the past year, the paste has likely dried out. Replacing it takes 30-60 minutes and costs $8.
Conclusion
To lower GPU temperature, start with the quick fixes: increase fan speed, clean dust, and improve case airflow. Then apply software fixes: undervolt, cap frame rate, and lower graphics settings. For older GPUs, repaste thermal paste for the biggest improvement (−10 to −20°C).
Most gamers can reduce GPU temps by 15-25°C with the methods in this guide. Don’t let thermal throttling steal your FPS — fix it today.
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