iMac(Retina 4K, 21.5-inch, Late 2015)
Retina. Now in colossal and ginormous.
Background
On October 13, 2015, a new version of the 21.5-inch iMac was announced, whose main feature was a Retina 4K display at a resolution of 4096 x 2304 pixels. It featured updated processors, faster graphics chip, IO, along with several new storage options.
Source: Wikipedia
Key Specs
Display21.5" LED
Chipi5-5675R / i7-5775R
GraphicsIntel® Iris® Pro 6200
Memory8GB / 16GB
Storage1TB / 1TB Fusion Drive / 2TB Fusion Drive / 256GB SSD / 512GB SSD
Battery-
Weight5.68kg
Full Specifications
Basic Info
Release Date2015.10.14
OS SupportOS X 10.11 ~ macOS 12
Chip & Storage
Chipi5-5675R（Quad-Core） / i7-5775R（Quad-Core）
Memory8GB / 16GB
Storage1TB / 1TB Fusion Drive / 2TB Fusion Drive / 256GB SSD / 512GB SSD
Neural Engine/
Display
Screen Size21.5"
Screen TypeLED
Resolution4096 × 2304
PPI219
Camera & Audio
CameraFaceTime HD
Media DriveNo built-in optical drive
Connectivity & Expansion
Wi-Fi802.11ac Wi-Fi
BluetoothBluetooth 4.0
Body & Dimensions
Width45 mm
Height52.8 mm
Thickness17.5 mm
Weight5.68kg
Model Identifier
Model IDiMac16,2
Mold ModelA1418
Technical Specificationshttps://support.apple.com/zh-cn/112034