Apple 661-02528 | 2.8GHz CPU 16GB RAM Logic Board (Motherboard) for MacBook Pro A1398

Here are the technical specifications for the Apple 2.8GHz CPU 16GB RAM Logic Board (Motherboard) for MacBook Pro A1398:

1. Processor: 2.8GHz quad-core Intel Core i7 processor with Turbo Boost up to 4.0GHz
2. Graphics: Intel Iris Pro Graphics + AMD Radeon R9 M370X with 2GB GDDR5 memory
3. RAM: 16GB of 1600MHz DDR3L onboard memory
4. Storage: PCIe-based flash storage drive
5. Display: 15.4-inch Retina display with a resolution of 2880 x 1800 pixels
6. Ports: Two Thunderbolt 2 ports, two USB 3.0 ports, an HDMI port, an SDXC card slot, and a headphone jack
7. Wireless: 802.11ac Wi-Fi and Bluetooth 4.0 wireless technology
8. Camera: 720p FaceTime HD camera
9. Audio: Stereo speakers with high dynamic range, two microphones, and a headphone port
10. Battery: Up to 9 hours of wireless web browsing or up to 30 days of standby time
11. Dimensions: 14.13 x 9.73 x 0.71 inches (35.89 x 24.71 x 1.8 cm)
12. Weight: 4.49 pounds (2.04 kg)

Helpful notes:
1. This logic board is compatible with the 15-inch MacBook Pro model A1398 from mid-2015.
2. Upgrading to this logic board can significantly improve the performance of your MacBook Pro.
3. It is recommended to have a professional install this logic board to avoid causing any damage to your device.