Lenovo Thinkpad T470 T480 CPU Fan Heatsink

Description

The Lenovo ThinkPad T470 and T480 are both popular business laptops, and they use similar cooling systems. Here’s a breakdown of the CPU fan and heatsink components for both models:

1. CPU Fan and Heatsink (T470 / T480) Overview

The CPU fan and heatsink are essential for managing heat dissipation from the processor. The cooling system typically consists of a fan and heat pipes, with a heatsink that helps transfer heat away from the CPU to the fan, where it’s then expelled out of the laptop.

2. Fan and Heatsink for the T470

• CPU Fan: The T470 uses a 4-pin fan connector for the CPU fan. The fan is responsible for circulating air through the heatsink to cool the processor.
• Heatsink: The heatsink usually features heat pipes that are in direct contact with the CPU. The heat pipes transport heat from the CPU to the heatsink fins, which increase surface area for better heat dissipation.
• Design: The T470 has a compact design with a single heat pipe that serves both the CPU and GPU (if applicable, depending on the model).
• Replacement: If you need to replace the fan or heatsink, it’s recommended to buy OEM (original equipment manufacturer) parts for compatibility. The model numbers for the cooling assembly can vary based on the specific configuration (e.g., CPU model, GPU presence, etc.).

3. Fan and Heatsink for the T480

• CPU Fan: The T480 also uses a 4-pin fan with similar functionality to the T470. However, the T480 may have a slightly different fan design due to potential changes in the motherboard and internal layout.
• Heatsink: Similar to the T470, the T480 uses a heatsink with heat pipes, though the configuration may vary based on the CPU and GPU options selected.
• Dual Fan Option: The T480 may come with an option for a dual-fan system (for configurations with higher-performance CPUs or dedicated GPUs).
• Replacement: Like the T470, you should opt for OEM parts if you’re replacing the fan or heatsink.

4. Cooling System Components

• Thermal Paste: When replacing the heatsink, it’s critical to clean off the old thermal paste and apply new thermal paste between the CPU/GPU and the heatsink to ensure efficient heat transfer.
• Fan Connector and Placement: Make sure that the fan connector is compatible and that the fan is securely seated to ensure proper airflow.

5. Parts Compatibility

• T470 to T480: While the T470 and T480 are similar in terms of design, there may be slight differences in the fan and heatsink assembly due to different configurations or models. Always verify part numbers before purchasing.
• Aftermarket Parts: You can find aftermarket cooling assemblies, but it’s generally recommended to stick to genuine Lenovo parts for the best performance and compatibility.

6. Replacing the Cooling System

• To replace the CPU fan and heatsink, you will generally need to:
  1. Power off the laptop and disconnect it from any power sources.
  2. Open the bottom panel and remove the battery.
  3. Unscrew and remove any components blocking access to the cooling system (such as memory or storage modules).
  4. Remove the screws securing the fan and heatsink assembly.
  5. Carefully disconnect the fan cable and remove the heatsink and fan.
  6. Apply new thermal paste to the CPU (and GPU, if applicable).
  7. Install the new fan and heatsink, reassemble the laptop, and test for proper cooling.

7. Troubleshooting

• Overheating: If you’re experiencing overheating issues, check the fan for dust buildup or obstruction, as this can significantly reduce cooling efficiency.
• Noise: If the fan is making noise, it may be clogged with dust or need lubrication. If the noise persists, it could indicate a failing fan.

Where to Buy Parts

• You can purchase replacement fans and heatsinks directly from Lenovo’s official website or authorized parts resellers.
• Alternatively, websites like eBay, Amazon, or third-party suppliers like LaptopPartsExpert also offer cooling systems for ThinkPad models.

Let me know if you need more specific details or guidance!