AMD 5800x3D immediately jumps to 90C while stress testing

Understanding High Temperatures in the AMD Ryzen 7 5800X3D During Stress Testing: Causes and Troubleshooting Tips

Introduction

The AMD Ryzen 7 5800X3D is renowned for its impressive gaming performance and innovative 3D V-Cache technology. However, users sometimes encounter unexpected thermal behaviors that can raise concerns about system stability and longevity. Recently, some users have reported rapid temperature spikes, reaching 90°C within seconds under stress testing, even after reapplying thermal paste. If you’ve faced similar issues or want to ensure your system runs optimally, this article delves into common causes and effective troubleshooting steps.

Understanding the Issue

Typical idle temperatures for the Ryzen 7 5800X3D hover around 45°C, which is within acceptable ranges. However, sudden jumps to 90°C during stress tests like OCCT indicate potential cooling or configuration issues. Several factors can contribute to such temperature spikes, including thermal paste application, cooling solution efficiency, fan operation, and system configuration.

Key Components Involved

• CPU: AMD Ryzen 7 5800X3D
• Cooling Solution: be quiet! Dark Rock Pro 4
• Case: Fractal Torrent Compact
• Motherboard: MSI B450 Gaming Pro Carbon AC
• Thermal Paste: Thermal Grizzly Kryonaut
• Fan Control: Managed via FanControl with auto curves

Possible Causes and Solutions

1. Thermal Paste Application

2. Issue: Dry or improperly applied thermal paste can lead to poor heat transfer.

3. Action: Reapply a high-quality thermal compound (such as Thermal Grizzly Kryonaut) using proper techniques—ensure a thin, even layer. Carefully detach the cooler, clean previous paste thoroughly, and reapply.

4. Cooler Mounting and Contact

5. Issue: Improper mounting, uneven pressure, or misaligned cooler can cause hotspots.

6. Action: Verify that the Dark Rock Pro 4 is seated firmly and evenly on the CPU. Use the correct mounting hardware and follow the manufacturer’s installation instructions meticulously.

7. Fan and Airflow Configuration

8. Issue: Silent fans may not be providing adequate airflow if their curves are misconfigured.

9. Action: Use FanControl or BIOS settings to set an appropriate fan curve, ensuring fans ramp up as temperatures increase. Check that all fans connected to the cooler and case are operational and spinning as intended.

10. Case Airflow and Ventilation

11. Issue: Restricted airflow within the case can trap heat.

12. Action: