Model Detail - iMac 27 inch 3.6 GHz Core i9-9900K Coffee Lake Retina 5K (Early 2019)

The BTO iMac Core i9 3.6 GHz 27-Inch 5k Retina Screen (Early 2019) is powered by a 14 nm Coffee Lake Eight-Core 3.6GHz Intel 'Core i9' 9900K processor with a 6MB shared level 3 cache. This model can be ordered with a Radeon Pro 575X, 580X, or even AMD Radeon Vega 48 graphics processor including 8GB of GDDR5 graphics memory.

Base configuration comes with 4 memory slots with 8GB DDR4-2666 (PC4-21300) SDRAM installed as a pair of 4GB SODIMMs (with 2 slots empty), a 1TB Fusion hybrid drive, a "FaceTime HD" webcam and stereo speakers with no optical drive.

This model has a 27" 5120x2880 5k Retina LED 16:9 widescreen IPS display with a monolithic glass laminated LCD panel. The sleek aluminum housing of these models tapers to a slim 5mm edge around the screen perimeter with greater girth in the center of the unit.
Ports and connectivity come via 4 USB-c 3.0 ports, 2 being Thunderbolt ports, 1 Gigabit Ethernet, 802.11a/b/g/n/ac compatible and Bluetooth 4.2.

Download the manual from here.

Learn how to install Extra RAM here.

Processor Speed 3.6 GHz
First Build Date 03/19/2019
Last Build Date N/A
Built-in Display 27
Model Identifier iMac19,1
Apple Order Number BTO (Build to Order)
Apple Model Number A2115 (EMC 3194)
Form Factor 27 iMac Late 2012
Apple Subfamily Retina 5K, Early 2018
Standard RAM
Maximum RAM
128 GB
RAM Slots4
RAM SpecsPC4-21300 DDR4-2666
RAM SpeedSpeed 2666 MHz
Standard Storage Drive
1 TB, 2 TB (Fusion)
Maximum Storage Drive
Storage Drive Interface Serial ATA (SATA) (6 Gb/s)/PCIe
Processor Type Core i9 (9900K) Coffee Lake
Processors / Cores 1 (8 Cores)
Geekbench Rating N/A
Turbo Boost Speed 5.0 GHz
Custom Speeds N/A
Architecture 64-Bit
Processor Upgradeable LGA 1151 socket
FPU Integrated
Integrated System RAM None
Standard RAM 8 GB
Maximum RAM 128 GB
RAM Slots 4
RAM Specs PC4-21300 DDR4-2666
RAM Speed Speed 2666 MHz
System Bus Speed 8 GT/s (DMI3)
Cache Bus Speed Speed 3.7 GHz (Built-in)
ROM / Firmware Type EFI
EFI Architecture 64-Bit
L1 Cache 32k/32k
L2 / L3 Cache 256k (x4) 6 MB (on chip)
Video Card Choice of: Radeon Pro 575X, 580X or AMD Radeon Vega 48
Standard VRAM 8 GB
Maximum VRAM 8 GB
Native Resolution 5120x2880
Multi Display Support Dual/ Mirroring
Multi Display Max Resolution 5120x2880
Standard Storage Drive 1 TB, 2 TB (Fusion)
Maximum Storage Drive 3TB
Storage Drive Interface Serial ATA (SATA) (6 Gb/s)/PCIe
Optical Disk None
Floppy / Zip Drive None
AirPort 802.11ac
Bluetooth 4.2
Video / Multi-IO 2 (Thunderbolt)
Thunderbolt Ports / Spec 2 (TB3/ 40Gb) USB-C
USB Ports / Spec 4 (3.0)
Firewire Ports / Spec None
Ethernet (RJ-45) 10/100/1000Base-T
Modem (RJ-11) None
Headphone 1
Microphone 2 (Built-in)
Audio In 1
Audio Out 1
Keyboard Apple Wireless Keyboard
Mouse / Trackpad Magic Mouse 2/Trackpad
Expansion Slots SDXC SD Card
Expansion Bays None
S-Video Input None
S-Video Output None
Floppy None
ADB None
Serial None
Geoport None
Pre-Installed MacOS X 10.12.4 (16F2073)
Maximum MacOS Current
MacOS 9 Support None
Windows Support Boot/ Virtualization
Minimum Windows 10 (64-Bit)
Maximum Windows 10(64-Bit)
Battery Type N/A
Battery Life N/A
Power Adapter None
Case Type All-in-One
Dimensions 20.3 x 25.6 x 8
Weight 20.8 lbs. (9.42 kg)
Original Price USD (US) $2299
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