Apple 661-7158 | Intel i5 3.2GHz Quad-Core CPU 2GB GDDR Logic Board (Motherboard) for iMac 27

Here are the technical specifications for the Apple Intel i5 3.2GHz Quad-Core CPU 2GB GDDR Logic Board (Motherboard) for iMac 27:

1. Processor: Intel i5 3.2GHz Quad-Core CPU
2. Graphics: AMD Radeon HD 6970M with 2GB GDDR5 memory
3. Memory: 4 RAM slots supporting up to 16GB DDR3 memory
4. Storage: 1 SATA connector for 3.5-inch hard drive or SSD
5. Audio: Built-in stereo speakers and microphone
6. Networking: Gigabit Ethernet, Wi-Fi 802.11n, Bluetooth 2.1+EDR
7. Ports: 4 USB 2.0 ports, 2 Thunderbolt ports, SDXC card slot, FireWire 800 port, Mini DisplayPort output
8. Display: 27-inch LED-backlit display with 2560-by-1440 resolution
9. Operating System: Mac OS X v10.6 Snow Leopard or later
10. Dimensions: 20.4 x 25.6 x 8.15 inches (51.7 x 65.0 x 20.7 cm)
11. Weight: 30.5 pounds (13.8 kg)
12. Power: 310W power supply

Helpful notes:
1. This logic board is compatible with iMac 27-inch models from mid-2011 to late-2011.
2. Upgrading the RAM to the maximum capacity can significantly improve the performance of the iMac.
3. The Thunderbolt ports allow for high-speed data transfer and can be used to connect external displays, storage devices, and other peripherals.