iMac17,1

iMac (Retina 5K, 27-inch, Late 2015)iMac2015EFI 64-bitno security chip

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iMac17,1 R9 M380 R9 M290 / M390 R9 M395 / M395X 0 of 3 configurations tested Cards Matrix

iMac (Retina 5K, 27-inch, Late 2015)

announced 2015-10-13 · discontinued 2017-06-05 · A1419 · EMC 2834

R9 M380 Quad-core Core i5 3.2 GHz · Radeon R9 M380 Untested0/22 tested

Boot0/3 passed

Stock installer boots via 64-bit EFIUntested
Internal storage detected and installation completesUntested
Installed system starts, restarts and shuts down cleanlyUntested

Graphics0/2 passed

Discrete GPU accelerationUntested
External display outputUntested back-7back-8

Display0/2 passed

Internal display at native resolutionUntested
Display brightness controlUntested

Power0/1 passed

Sleep and wakeUntested

Audio0/5 passed

Built-in speakersUntested
Built-in microphoneUntested
Headphone / analog audio outputUntested back-1
Optical digital audio outputUntested back-1
Audio over HDMI / DisplayPortUntested

Camera0/1 passed

Built-in webcamUntested

Networking0/3 passed

Wi-FiUntested
BluetoothUntested
EthernetUntested back-9

Ports0/3 passed

USB-A portsUntested back-3back-4back-5back-6
Thunderbolt devices (storage, docks, hotplug)Untested back-7back-8
SD card readerUntested back-2
Port methodology

Thermal0/2 passed

Temperature sensors report under loadUntested
Fans respond to loadUntested

Hardware Configuration Detailsimac17-1-5k-late-2015-a

CPU: Core i5-6500 3.2 GHz · 4-core (Skylake)
Memory: 8 GB DDR3-1867 SO-DIMM · max 64 GB
Storage: 1 TB HDD / 1 TB Fusion Drive / 2 TB Fusion Drive · SATA · BTO 3 TB Fusion Drive, 256 GB SSD, 512 GB SSD, 1 TB SSD, 2 TB SSD
Display: 27" 5120×2880 · Retina 5K LED IPS
Graphics: AMD Radeon R9 M380 · OpenGL ES 3.2
pci:1002:6640
Wi-Fi: Broadcom BCM43602 802.11ac
pci:14e4:43ba
Bluetooth: Apple Bluetooth 4.2 (USB 05ac:8294)
usb:05ac:8294
Audio codec: Cirrus Logic CS4206
Camera: Apple FaceTime HD camera (USB 05ac:8511)
usb:05ac:8511
Ethernet: Broadcom NetXtreme BCM57766 Gigabit Ethernet
pci:14e4:1686
Storage controller: Intel 100 Series SATA controller
pci:8086:a102
Storage controller: Apple PCIe SSD (AHCI) BTO
pci:144d:a801 · pci:144d:1600 · pci:1b4b:9183 · pci:1179:010b
Storage controller: Apple S1X NVMe SSD controller BTO
pci:106b:2001
Thunderbolt controller: Intel DSL5520 "Falcon Ridge" Thunderbolt 2 controller
pci:8086:156c · pci:8086:156d
SD card reader: Broadcom BCM57765 SDXC card reader
pci:14e4:16bc
Ports: Headphone / line out (analog) · Optical digital audio out · Gigabit Ethernet · SD card slot · 2× Thunderbolt 2 · 4× USB 3 (Type-A)
Port layout: Download drawing (SVG)

Port methodology

Back:1back-1 Headphone / line out (analog) + Optical digital audio out2back-2 SD card slot3back-3 USB 3 (Type-A)4back-4 USB 3 (Type-A)5back-5 USB 3 (Type-A)6back-6 USB 3 (Type-A)7back-7 Thunderbolt 28back-8 Thunderbolt 29back-9 Gigabit Ethernet
Numbered left to right as you face each side (top to bottom on a Mac Pro). Source: Apple manual
Features: Built-in display · Built-in speaker(s) · Built-in microphone · Cooling fan · Audio over Mini DisplayPort / Thunderbolt
Order no.: MK462LL/A

R9 M290 / M390 Quad-core Core i5 3.2 GHz · Radeon R9 M390 Untested0/22 tested

Boot0/3 passed

Stock installer boots via 64-bit EFIUntested
Internal storage detected and installation completesUntested
Installed system starts, restarts and shuts down cleanlyUntested

Graphics0/2 passed

Discrete GPU accelerationUntested
External display outputUntested back-7back-8

Display0/2 passed

Internal display at native resolutionUntested
Display brightness controlUntested

Power0/1 passed

Sleep and wakeUntested

Audio0/5 passed

Built-in speakersUntested
Built-in microphoneUntested
Headphone / analog audio outputUntested back-1
Optical digital audio outputUntested back-1
Audio over HDMI / DisplayPortUntested

Camera0/1 passed

Built-in webcamUntested

Networking0/3 passed

Wi-FiUntested
BluetoothUntested
EthernetUntested back-9

Ports0/3 passed

USB-A portsUntested back-3back-4back-5back-6
Thunderbolt devices (storage, docks, hotplug)Untested back-7back-8
SD card readerUntested back-2
Port methodology

Thermal0/2 passed

Temperature sensors report under loadUntested
Fans respond to loadUntested

Hardware Configuration Detailsimac17-1-5k-late-2015-b

CPU: Core i5-6500 3.2 GHz · 4-core (Skylake)
Memory: 8 GB DDR3-1867 SO-DIMM · max 64 GB
Storage: 1 TB HDD / 1 TB Fusion Drive / 2 TB Fusion Drive · SATA · BTO 3 TB Fusion Drive, 256 GB SSD, 512 GB SSD, 1 TB SSD, 2 TB SSD
Display: 27" 5120×2880 · Retina 5K LED IPS
Graphics: AMD Radeon R9 M290 / M390 (Pitcairn) · OpenGL ES 3.2
pci:1002:6819
Wi-Fi: Broadcom BCM43602 802.11ac
pci:14e4:43ba
Bluetooth: Apple Bluetooth 4.2 (USB 05ac:8294)
usb:05ac:8294
Audio codec: Cirrus Logic CS4206
Camera: Apple FaceTime HD camera (USB 05ac:8511)
usb:05ac:8511
Ethernet: Broadcom NetXtreme BCM57766 Gigabit Ethernet
pci:14e4:1686
Storage controller: Intel 100 Series SATA controller
pci:8086:a102
Storage controller: Apple PCIe SSD (AHCI) BTO
pci:144d:a801 · pci:144d:1600 · pci:1b4b:9183 · pci:1179:010b
Storage controller: Apple S1X NVMe SSD controller BTO
pci:106b:2001
Thunderbolt controller: Intel DSL5520 "Falcon Ridge" Thunderbolt 2 controller
pci:8086:156c · pci:8086:156d
SD card reader: Broadcom BCM57765 SDXC card reader
pci:14e4:16bc
Ports: Headphone / line out (analog) · Optical digital audio out · Gigabit Ethernet · SD card slot · 2× Thunderbolt 2 · 4× USB 3 (Type-A)
Port layout: Download drawing (SVG)

Port methodology

Back:1back-1 Headphone / line out (analog) + Optical digital audio out2back-2 SD card slot3back-3 USB 3 (Type-A)4back-4 USB 3 (Type-A)5back-5 USB 3 (Type-A)6back-6 USB 3 (Type-A)7back-7 Thunderbolt 28back-8 Thunderbolt 29back-9 Gigabit Ethernet
Numbered left to right as you face each side (top to bottom on a Mac Pro). Source: Apple manual
Features: Built-in display · Built-in speaker(s) · Built-in microphone · Cooling fan · Audio over Mini DisplayPort / Thunderbolt
Order no.: MK472LL/A

R9 M395 / M395X Quad-core Core i5 3.3 GHz or Core i7 4.0 GHz · Radeon R9 M395 / M395X Untested0/22 tested

Boot0/3 passed

Stock installer boots via 64-bit EFIUntested
Internal storage detected and installation completesUntested
Installed system starts, restarts and shuts down cleanlyUntested

Graphics0/2 passed

Discrete GPU accelerationUntested
External display outputUntested back-7back-8

Display0/2 passed

Internal display at native resolutionUntested
Display brightness controlUntested

Power0/1 passed

Sleep and wakeUntested

Audio0/5 passed

Built-in speakersUntested
Built-in microphoneUntested
Headphone / analog audio outputUntested back-1
Optical digital audio outputUntested back-1
Audio over HDMI / DisplayPortUntested

Camera0/1 passed

Built-in webcamUntested

Networking0/3 passed

Wi-FiUntested
BluetoothUntested
EthernetUntested back-9

Ports0/3 passed

USB-A portsUntested back-3back-4back-5back-6
Thunderbolt devices (storage, docks, hotplug)Untested back-7back-8
SD card readerUntested back-2
Port methodology

Thermal0/2 passed

Temperature sensors report under loadUntested
Fans respond to loadUntested

Hardware Configuration Detailsimac17-1-5k-late-2015-c

CPU: Core i5-6600 3.3 GHz · 4-core
BTO: Core i7-6700K 4 GHz · 4-core (Skylake)
Memory: 8 GB DDR3-1867 SO-DIMM · max 64 GB
Storage: 1 TB HDD / 1 TB Fusion Drive / 2 TB Fusion Drive · SATA · BTO 3 TB Fusion Drive, 256 GB SSD, 512 GB SSD, 1 TB SSD, 2 TB SSD
Display: 27" 5120×2880 · Retina 5K LED IPS
Graphics: AMD Radeon R9 M395 / M395X (Tonga) · OpenGL ES 3.2
pci:1002:6920
Wi-Fi: Broadcom BCM43602 802.11ac
pci:14e4:43ba
Bluetooth: Apple Bluetooth 4.2 (USB 05ac:8294)
usb:05ac:8294
Audio codec: Cirrus Logic CS4206
Camera: Apple FaceTime HD camera (USB 05ac:8511)
usb:05ac:8511
Ethernet: Broadcom NetXtreme BCM57766 Gigabit Ethernet
pci:14e4:1686
Storage controller: Intel 100 Series SATA controller
pci:8086:a102
Storage controller: Apple PCIe SSD (AHCI) BTO
pci:144d:a801 · pci:144d:1600 · pci:1b4b:9183 · pci:1179:010b
Storage controller: Apple S1X NVMe SSD controller BTO
pci:106b:2001
Thunderbolt controller: Intel DSL5520 "Falcon Ridge" Thunderbolt 2 controller
pci:8086:156c · pci:8086:156d
SD card reader: Broadcom BCM57765 SDXC card reader
pci:14e4:16bc
Ports: Headphone / line out (analog) · Optical digital audio out · Gigabit Ethernet · SD card slot · 2× Thunderbolt 2 · 4× USB 3 (Type-A)
Port layout: Download drawing (SVG)

Port methodology

Back:1back-1 Headphone / line out (analog) + Optical digital audio out2back-2 SD card slot3back-3 USB 3 (Type-A)4back-4 USB 3 (Type-A)5back-5 USB 3 (Type-A)6back-6 USB 3 (Type-A)7back-7 Thunderbolt 28back-8 Thunderbolt 29back-9 Gigabit Ethernet
Numbered left to right as you face each side (top to bottom on a Mac Pro). Source: Apple manual
Features: Built-in display · Built-in speaker(s) · Built-in microphone · Cooling fan · Audio over Mini DisplayPort / Thunderbolt
Order no.: MK482LL/A

The R9 M395X upgrade uses the same Tonga chip.

Research notes (unverified)

Skylake 5K iMac. Audio is a Cirrus Logic CS4206 codec on every observed machine. SSDs are Apple PCIe flash (AHCI or NVMe depending on unit).
Board IDs from real machines (dmesg DMI line) follow the GPU: Mac-65CE76090165799A with the R9 M380, Mac-DB15BD556843C820 with the M390, Mac-B809C3757DA9BB8D with the M395/M395X.

Sources (8) and identifiers

Board IDs: Mac-65CE76090165799A, Mac-DB15BD556843C820, Mac-B809C3757DA9BB8D