Overview

• Igor’s Lab found that substandard thermal paste is the main cause of overheating in Nvidia RTX 40-series GPUs.
• The paste degrades quickly, causing hotspot temperatures to exceed 100°C, even with optimized airflow.
• Replacing the factory-applied paste with high-quality alternatives significantly reduces temperatures.
• Manufacturers use cheap paste to cut costs, but it leads to performance degradation over time.
• Users can fix the issue themselves, but it may void their warranty.