661-16559 iMac 24″ A2438 M1 8-core CPU, 7-core GPU, 8GB, 1TB Logic Board 820-02009-A

Product Information

Part Name: Logic Board – Apple iMac 24″ A2438 M1, 8-Core CPU / 7-Core GPU / 8GB RAM / 1TB SSD
Apple Part Number: 661-16559
Logic Board Number: 820-02009-A
Compatible Model: iMac 24″ – M1 (2021), A2438 (4-Port or 2-Port)
EMC Number: 3662
 
Technical Description

This is the complete logic board assembly for the Apple iMac 24-inch (2021) Model A2438, featuring the first-generation Apple M1 System-on-Chip with integrated memory and storage.

Key Specifications:

Apple M1 Chip: 8-core CPU (4 performance cores + 4 efficiency cores) and 7-core GPU using 5nm architecture.
Unified Memory: 8GB LPDDR4X-4266 MHz RAM (soldered).
Internal Storage: 1TB integrated NVMe SSD.
Wireless Connectivity: Built-in Wi-Fi 6 (802.11ax) and Bluetooth 5.0.
I/O Support: Compatible with both 4-port and 2-port A2438 configurations.
Thermal Support: Includes mounting points for fan and thermal modules.

 
Compatibility Note:

This board is only for the iMac 24″ M1 (2021) Model A2438. It does not work with earlier Intel-based iMacs or M1 Pro / Max variants.