iMac Retina 5K 27-inch Late 2015 Datasheet

iMac Retina 5K 27-inch
Source: apple.com – iMac Retina 5K 27-inch

The Apple iMac Retina 5K 27-inch Late 2015 is a personal computer designed, manufactured, and sold by Apple from 2015 to 2017 as part of the iMac series. The computer was introduced on October 13, 2015, and its price started at $1,799.

The new iMac features a 3.2 GHz or 3.3 GHz Intel Core i5 or 4.0 GHz Intel Core i7 processor, 8 GB of RAM, 27-inch glossy high-resolution Retina 5K LED-backlit IPS LCD Display, 1 TB hard drive, Ambient Light Sensor, FaceTime HD camera, two Thunderbolt 2 ports USB 3.0 ports, an SDXD card slot, and 2 GB AMD Radeon R9 M380 graphics in the base model. This iMac comes with a new Magic Mouse 2 and the new Magic Keyboard instead of the old ones.

This iMac has been discontinued on June 5, 2017. Today iMac Retina 5K 27-inch Late 2015 is 8 years old!

iMac Retina 5K 27-inch Late 2015 Details

IntroducedOctober 13, 2015 – 8 years ago
DiscontinuedJune 5, 2017 – 7 years ago
Last Software UpdateMay 13, 2024 – 35 days ago
Time on the Market19 months (1 year)
Time of Support104 months (8 years)
Model IdentifieriMac17,1
Model NumberA1419
Order NumberMK462LL/A (3.2 GHz / AMD Radeon R9 M380)
MK472LL/A (3.2 GHz / AMD Radeon R9 M390)
MK482LL/A (3.3 GHz / AMD Radeon R9 M395)
Original Price$1,799
Weight21 Ibs.
9.525 KG
Dimensions20.3” H x 25.6” W x 8” D
51.56 cm H x 65.02 cm W x 20.32 cm D

iMac Retina 27-inch Tech Specs


ProcessorIntel Core i5 6500 “Skylake” (3.2 GHz)
Intel Core i5 6600 “Skylake” (3.3 GHz)
Intel Core i7 6700K “Skylake” (4.0 GHz)
Processor Speed3.2 GHz
3.3 GHz
4.0 GHz
Maximum Processor SpeedUp to 3.6 GHz (3.2 GHz)
Up to 3.9 GHz (3.3 GHz)
Up to 4.2 GHz (4.0 GHz)
Number of Cores4
System BusIntel Direct Media Interface (DMI) 8 GT/s
Cache6 MB L3 (Core i5)
8 MB L3 (Core i7)

Storage & Media

Storage1 TB HDD
1 TB Fusion Drive
2 TB Fusion Drive
3 TB Fusion Drive
256 GB SSD
512 GB SSD


Built-in Memory8 GB
Maximum Memory32 GB (Apple)
64 GB (Actual)
Memory Slots4 – PC3L-14900 204-pin DDR3 SO-DIMM 1867 MHz
Interleaving SupportYes


Built-in Display27″ IPS LED-backlit LCD high-resolution Retina 5K glossy widescreen Display
Display GlassStandard
Color GamutWide color gamut P3
Pixel Density218 ppi
Resolutions5120 x 2880


Graphics CardAMD Radeon R9 M380
AMD Radeon R9 M390
AMD Radeon R9 M395
AMD Radeon R9 M395X
Graphics Memory2 GB GDDR5 (AMD Radeon R9 M380, AMD Radeon R9 M390, AMD Radeon R9 M395)
4 GB GDDR5 (AMD Radeon R9 M395X)
Display Connection2 – Thunderbolt (Support for up to two Thunderbolt displays)
Display ModesDual display extended, video mirroring, and AirPlay Mirroring
External ResolutionUp to 4096 x 2160 pixels (two displays)
Up to 5120 x 2880 pixels (one display)
CameraFaceTime HD


Expansion Slots1 – Secure Digital (SDXC)
Hard Drive Interface1 – 6 Gbps Serial ATA (SATA)
1 – 8.0 GT/s PCIe x4


Ethernet10/100/1000BASE-T (RJ-45)
BluetoothBluetooth 4.0
USB4 – Up to 5 Gbps
Thunderbolt2 – Thunderbolt 2 (Up to 20 Gbps)
Audio In1 – 3.5-mm analog/optical combo jack
2 – Microphones
Audio Out1 – 3.5-mm analog/optical combo jack
2 – Speakers
Display2 – Thunderbolt (Support for up to two Thunderbolt displays)

Keyboard and Mouse

PeripheralsMagic Keyboard
Magic Mouse 2 or Magic Trackpad 2


Original OSOS X 10.11
Later OSOS X 10.11.1
Maximum OSmacOS 12.7.5
FirmwareIntel Extensible Firmware Interface
Unlock with Apple WatchSupported with macOS Sierra (Apple Watch (1st generation), Apple Watch Series 1, and Apple Watch Series 2)
macOS High Sierra or later (Apple Watch Series 3 or later)
Bundled SoftwareOS X 10.11


Backup Battery3 V CR2032 Lithium
Maximum Continuous Power310 W
Line Voltage100-240 V AC

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Disclaimer: The data presented in this article is under continuous development and has been manually collected from various sources based on their availability. The author of this article may revise this dataset as additional research is conducted and reviewed. Please note that the information is provided “as is” and “as available” without express or implied warranties. The author cannot be held responsible for any omissions, inaccuracies, or errors in the published information. Any warranties relating to this information are hereby disclaimed.