Customize your 21.5‑inch iMac with Retina 4K display.

Processor

The Intel Core i7 processor takes advantage of Hyper-Threading, a technology that kicks in when the processor is handling several big jobs at the same time. It lets each of the processor’s cores run two threads simultaneously, which means it can do two things at once. So it’s as if your iMac has eight cores at its disposal instead of four, allowing it to multitask more efficiently.

Memory

The standard memory configuration is perfect for day-to-day tasks such as email, word processing and web surfing, as well as complex tasks such as photo editing, creating illustrations or building presentations.

If you’re working on large projects in professional applications like Logic Pro X or Final Cut Pro X, upgrading your memory will help them run at peak performance.

Note that the 21.5-inch iMac comes with 8GB of memory built into the computer. If you think you may need more memory in the future, it may be preferable to upgrade at the time of purchase. Memory can only be upgraded by an Apple Authorised Service Provider if you choose to upgrade at a later date.

Storage

SSD Storage

SSD storage delivers significantly improved performance compared to a traditional hard drive — speed you’ll notice when you start up your iMac, launch an app or browse your photo library. SSD storage also uses no moving parts, so it operates silently. For maximum performance, you can configure up to 1TB of storage on the 21.5-inch iMac or up to 2TB on the 27-inch iMac.

Fusion Drive

Fusion Drive combines speedy SSD storage with a high-capacity hard drive. macOS intelligently manages what goes where, using the SSD storage for files you access frequently and keeping the rest of your digital life on the roomier hard drive. Over time, the system learns how you work, so it tailors management of Fusion Drive to work best for you. You can choose a Fusion Drive of up to 1TB on the 21.5-inch iMac and up to 3TB on the 27-inch iMac.

The 1TB Fusion Drive pairs a 1TB hard drive with 32GB of fast SSD — enough to store important macOS files and applications to ensure fast start-up, near instant wake from sleep and quick application launching, with room left over for your most frequently used files and apps. The 2TB and 3TB Fusion Drives pair a larger hard drive with 128GB of fast SSD storage, providing even more space for your most frequently used files. For the best performance, iMac systems with 32GB or more of memory should be configured with a 2TB or larger Fusion Drive or all-SSD storage.

Note: 1GB = 1 billion bytes and 1TB = 1 trillion bytes; actual formatted capacity less.

Mouse or Trackpad

Magic Mouse 2

The design of Magic Mouse 2 lets it glide smoothly across your desk. And since it supports Multi-Touch, you can use simple gestures on its surface to do things such as swipe between web pages and scroll through documents. So if you prefer using a wireless mouse but want some of the benefits of Multi-Touch, Magic Mouse 2 is a great choice.

Magic Trackpad 2

If you prefer using a trackpad, Magic Trackpad 2 gives you the full range of Multi-Touch gestures and introduces Force Touch technology to the desktop. Sensors underneath the trackpad surface detect subtle differences in the amount of pressure you apply, bringing more functionality to your fingertips and enabling a deeper connection to your content. The design also features a low profile, making it extremely comfortable to use.