The 3.4 GHz i5-4670 logic board is a premium component for the 27” iMac A1419 Late 2013 (ME089LL/A). This high-performance logic board, identified by Apple part number 661-7518, is equipped with an Intel i5 quad-core processor. Its robust design ensures efficient functionality and compatibility with demanding applications, making it an excellent replacement option for your iMac.
Key Features of the 661-7518 Logic Board
- Efficient processing: Powered by a 3.4 GHz Intel i5-4670 processor, perfect for multitasking.
- Premium quality: Designed specifically for the 27” iMac A1419 Late 2013.
- Apple-certified part: Identifiable by the part number 661-7518.
- Optimal performance: Enhances the overall speed and reliability of the system.
Why Choose the i5-4670 Logic Board?
Upgrading to the iMac A1419 logic board brings several advantages:
- Improved speed: Enjoy faster application loading and efficient processing.
- Seamless compatibility: Specifically built for the Late 2013 ME089LL/A iMac model.
- Reliable performance: Handles high workloads and ensures stable operation.

Compatibility
This logic board is fully compatible with:
- 27” iMac A1419 Late 2013 with model number ME089LL/A.
Installation Process
Replacing the logic board requires attention to detail but can be manageable by following these steps:
- First, disconnect the power supply and all connected peripherals.
- Next, place the iMac face down on a stable and clean surface.
- Use a suction tool to carefully remove the display panel.
- Locate the logic board and disconnect all attached cables.
- Remove the screws securing the board and lift it out gently.
- Install the new 661-7518 logic board, reconnect cables, and secure it in place.
- Finally, reattach the display panel and test the system for functionality.
Maintenance Tips
To maximize the lifespan of your i5-4670 logic board, follow these maintenance tips:
- Clean regularly: Keep the iMac free from dust to prevent overheating.
- Monitor temperatures: Use monitoring software to ensure the system remains cool.
- Proper handling: Avoid static electricity when working on internal components.
Troubleshooting
If issues arise, these troubleshooting steps may help:
- Display not working: Verify the display cables are securely connected to the logic board.
- System overheating: Check the cooling fans and ensure proper ventilation.
- Power issues: Confirm all connections are secure and the logic board is properly installed.
Conclusion
In summary, the 3.4 GHz i5-4670 logic board (661-7518) is a powerful and reliable upgrade for the Late 2013 iMac A1419 (ME089LL/A). Its high-speed processor, seamless compatibility, and robust build make it an excellent choice for enhancing your iMac’s performance. Proper installation and maintenance will ensure long-term efficiency and satisfaction.


