Genuine Apple Logic Board featuring the AMD Radeon R9 M395 graphics processor with 4 GB of memory.

This logic board was used in the High End configuration of the Late 2015 27" 5K iMac.  It may be used as replacement for other Late 2015 models where a step up in GPU performance is Desired. 

No CPU is included with this Logic Board it may be used with any of the following SkyLake 6th Generation Intel Core Series Processors.  

3.2 GHz I5-6500

3.3 GHz I5-6600

4.0 GHz I7-6700K

Compatibility

27 inch Apple iMac Retina 5K Late 2015

Identifiers

iMac 17,1 A1419 - 2834

Model Numbers

MK462LL/A

MK482LL/A

Specs

Processor

Socket FCLGA1151

• 3.2GHz quad‑core Intel Core i5 (Turbo Boost up to 3.6GHz)
• 3.3GHz quad‑core Intel Core i5 (Turbo Boost up to 3.9GHz)
• 4.0GHz quad-core Intel Core i7 (Turbo Boost up to 4.2GHz)

Memory

• 1867MHz DDR3 memory; four user-accessible SO-DIMM slots
  MAximum Supported ram 64GB.

Graphics

• AMD Radeon R9 M395 graphics processor with 4GB of GDDR5 memory.

Video Support and Camera

• Simultaneously supports full native resolution on the built-in display and up to two 4096-by-2160 external displays or one 5120-by-2880 dual-cable external display
• Support for extended desktop and video mirroring modes

Connections and Expansion

• SDXC card slot
• Four USB 3 ports (compatible with USB 2)
• Two Thunderbolt 2 ports up to 20 Gb/s
• 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)