iMac Tech Specs

2.3GHz Processor
1TB Storage

Retina 4K display
3.0GHz Processor
1TB Storage

Retina 4K display
3.4GHz Processor
1TB Storage

Display

Display

21.5-inch (diagonal) LED-backlit display
1920‑by‑1080 resolution with support for millions of colours

Retina 4K display

21.5-inch (diagonal) Retina 4K display
4096-by-2304 resolution with support for 1 billion colours
500 nits brightness
Wide colour (P3)

Processor

2.3GHz

2.3GHz dual‑core Intel Core i5 (Turbo Boost up to 3.6GHz)

 

 

3.0GHz

3.0GHz quad‑core Intel Core i5 (Turbo Boost up to 3.5GHz)

Configurable to 3.6GHz quad-core Intel Core i7 (Turbo Boost up to 4.2GHz)

3.4GHz

3.4GHz quad-core Intel Core i5 (Turbo Boost up to 3.8GHz)

Configurable to 3.6GHz quad-core Intel Core i7 (Turbo Boost up to 4.2GHz)

Memory

8GB of 2133MHz DDR4 onboard memory

Configurable to 16GB

8GB of 2133MHz DDR4 onboard memory

Configurable to 16GB

 

8GB of 2400MHz DDR4 onboard memory

Configurable to 16GB or 32GB

Storage

1TB (5400-rpm) hard drive

Configurable to 1TB Fusion Drive or 256GB SSD

1TB (5400-rpm) hard drive

Configurable to 1TB Fusion Drive, or 256GB or 512GB SSD

1TB Fusion Drive

Configurable to 256GB, 512GB or 1TB SSD

 

Graphics

Intel Iris Plus Graphics 640 Radeon Pro 555 with 2GB of VRAM Radeon Pro 560 with 4GB of VRAM
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