iMac15,1

iMac (Retina 5K, 27-inch, Mid 2015)iMac2014–2015EFI 64-bitno security chip

Is this your Mac? Identify your configuration →

iMac15,1 R9 M290X / FirePro D300 · Late 2014 R9 M295X · Late 2014 R9 M290 / M390 · Mid 2015 R9 M295X · Mid 2015 0 of 4 configurations tested Cards Matrix

Criterion	R9 M290X / FirePro D300 · Late 20…	R9 M295X · Late 2014	R9 M290 / M390 · Mid 2015	R9 M295X · Mid 2015	Config count
Boot · a failure here makes a config Unsupported 0 of 12 passed
Stock installer boots via 64-bit EFI	Untested	Untested	Untested	Untested	4
Internal storage detected and installation completes	Untested	Untested	Untested	Untested	4
Installed system starts, restarts and shuts down cleanly	Untested	Untested	Untested	Untested	4
Graphics 0 of 8 passed
Discrete GPU acceleration	Untested	Untested	Untested	Untested	4
External display output	Untested	Untested	Untested	Untested	4
Display 0 of 8 passed
Internal display at native resolution	Untested	Untested	Untested	Untested	4
Display brightness control	Untested	Untested	Untested	Untested	4
Power 0 of 4 passed
Sleep and wake	Untested	Untested	Untested	Untested	4
Audio 0 of 20 passed
Built-in speakers	Untested	Untested	Untested	Untested	4
Built-in microphone	Untested	Untested	Untested	Untested	4
Headphone / analog audio output	Untested	Untested	Untested	Untested	4
Optical digital audio output	Untested	Untested	Untested	Untested	4
Audio over HDMI / DisplayPort	Untested	Untested	Untested	Untested	4
Camera 0 of 4 passed
Built-in webcam	Untested	Untested	Untested	Untested	4
Networking 0 of 12 passed
Wi-Fi	Untested	Untested	Untested	Untested	4
Bluetooth	Untested	Untested	Untested	Untested	4
Ethernet	Untested	Untested	Untested	Untested	4
Ports 0 of 12 passed
USB-A ports	Untested	Untested	Untested	Untested	4
Thunderbolt devices (storage, docks, hotplug)	Untested	Untested	Untested	Untested	4
SD card reader	Untested	Untested	Untested	Untested	4
Thermal 0 of 8 passed
Temperature sensors report under load	Untested	Untested	Untested	Untested	4
Fans respond to load	Untested	Untested	Untested	Untested	4

Research notes (unverified)

First 5K iMac. Audio is a Cirrus Logic CS4206 codec on every observed machine.

Sources (8) and identifiers

Board IDs: Mac-42FD25EABCABB274, Mac-FA842E06C61E91C5