The 27″ iMac A1419 Late 2015 Logic Board (661-03174) is a top-tier replacement part for those who want to restore their iMac to its best performance. Powered by the 4.0GHz I7-6700K processor and equipped with the R9 M395 2GB graphics card, this logic board delivers impressive speed, processing power, and outstanding graphics quality, perfect for professional and creative tasks like video editing, gaming, and software development.
Key Features
- Processor: 4.0GHz Intel Core I7-6700K for unmatched speed and performance.
- Graphics: Radeon R9 M395 2GB GPU ensures smooth graphics rendering for demanding tasks.
- Compatibility: Designed for 27″ iMac A1419 models from Late 2015.
- Efficient Performance: Handles multitasking, gaming, and high-definition video with ease.
Why Upgrade with the I7-6700K Logic Board?
Upgrading to the I7-6700K Logic Board offers several advantages for your iMac:
- Improved Speed: With a 4.0GHz processor, your iMac will handle tasks quicker, whether it’s editing videos or running intensive programs.
- Enhanced Graphics: The R9 M395 2GB GPU ensures that you get smooth graphics performance for design, video, and games.
- Reliability: The new logic board is built to last, providing your iMac with improved stability for daily tasks and longer-lasting reliability.

Compatibility
This logic board is specifically compatible with:
- Model: 27″ iMac A1419
- Year: Late 2015
- Part Number: 661-03174
When to Replace the Logic Board?
Consider replacing your iMac logic board if you experience:
- Performance Lags: Slowdowns when multitasking or running resource-heavy programs.
- Graphical Errors: Distorted or flickering visuals on the display, indicating GPU issues.
- Complete System Failure: When other troubleshooting doesn’t resolve startup issues or random crashes.
How to Replace the Logic Board
Here’s a simple guide to replacing the iMac Logic Board:
- Turn off the iMac: Always ensure your iMac is powered off and unplugged from any power source.
- Open the iMac: Use the proper tools to open the back panel of the iMac safely.
- Disconnect the Old Logic Board: Carefully disconnect all cables and screws holding the previous logic board in place.
- Install the New Logic Board: Align the new logic board correctly, then secure it with screws and reconnect the cables.
- Reassemble and Power On: Close the iMac, power it up, and confirm that it’s working properly.
Final Thoughts
The 27″ iMac A1419 Late 2015 Logic Board with 4.0GHz I7-6700K and R9 M395 2GB is a powerful replacement part that ensures your iMac runs efficiently for years. Whether you’re tackling professional work or enjoying multimedia content, this logic board provides the performance boost you need. Upgrade today for a seamless experience!


