Product Reviews

Welcome to Consumer Reports.

We’re so glad to have you as a member. You now have access to benefits that can help you choose right, be safe and stay informed.

Apple 21.5-inch iMac with 4K Display MNDY2LL/A computer

An all-in-one desktop computer with a 21.5-inch screen, tested with macOS Sierra 10.12, an Intel Core i5 3GHz processor, 8GB of memory, a 1TB hard-disk drive, an AMD Radeon Pro 555 video adapter with 2GB dedicated video memory, and built-in speakers.

About

The Apple 21.5-inch iMac with 4K Display MNDY2LL/A is an all-in-one desktop computer with a 21.5-inch screen. It has 8GB of memory and a 1TB hard-disk drive. It has an Intel Core i5 3GHz processor and an AMD Radeon Pro 555 video adapter with 2GB dedicated video memory. It is suitable for high-performance gaming. However, it lacks an optical drive for burning CDs or DVDs. It comes with macOS Sierra 10.12 pre-installed.

It has an SD memory-card reader for digital photography, and it has 6 total USB ports. It supports WiFi 802.11ac, so it's compatible with high-speed routers. It also has a webcam for video conferencing.

The 21.5-inch iMac with 4K Display MNDY2LL/A measures 20.8 inches wide by 17.9 inches high by 6.7 inches deep. As an all-in-one desktop computer, the display and computer are combined into one device. Dimensions include the full depth of the stand, with the display set back at a 10 degree angle. It is backed by a 12-month warranty, with 3 months of free tech support by telephone.

Results in the following chart are gathered from Consumer Reports’ 2018 and 2019 Winter Surveys of 45,240 desktop computers, owned by members who purchased a new device between 2013 and 2019.

Our predicted brand reliability ratings are based on a statistical model that estimates problem rates within the first 3 years of ownership, for desktop computers that are not covered by an extended warranty or service contract. We also adjust for the median number of hours of use per week. The median in our survey was 20 hours per week. Higher ratings are indicative of better reliability. Brands receiving a red or orange rating cannot be recommended by CR at this time.

Our owner satisfaction ratings are based on the proportion of members who are extremely likely to recommend their desktop computer brand to friends and family.

Predicted Reliability

Acer
Apple
Asus
Dell
HP
Lenovo

Source: Consumer Reports' 2018 and 2019 Winter Surveys

Owner Satisfaction

Acer
Apple
Asus
Dell
HP
Lenovo

Source: Consumer Reports' 2018 and 2019 Winter Surveys

Connections

WiFi WiFi The type of built-in 802.11 wireless networking supported. Computers with 802.11n also support 802.11g routers. Some models with 802.11n also support the 5GHz "high band," a standard suitable for apartments and other crowded areas. 802.11ac is the newest, fastest type.
Yes
Digital video out Digital video out Has an HDMI, DisplayPort, or Thunderbolt video output for sending a digital video signal to a computer monitor or HDTV.
Yes
Thunderbolt port Thunderbolt port Has a Thunderbolt port for connecting peripherals such as an external hard drive. Thunderbolt is a new high-speed port that can connect to DVI, HDMI and VGA through the use of adapters.
Yes
Number of free USB ports Number of free USB ports Number of free USB ports for printers, hard drives, flash drives, or other peripherals.
6
Gigabit Ethernet Gigabit Ethernet Support for 1,000 Mb/s networking.
Yes
HDMI video out HDMI video out An HDMI out port for sending a digital video/audio signal to a computer monitor or HDTV.
No
HDMI video in HDMI video in Has an HDMI video input for using your all-in-one computer as a monitor.
No
DisplayPort video out DisplayPort video out A connection for a digital flat-panel display.
No
Optical digital-audio out Optical digital-audio out Has an optical digital audio output to connect to speakers or a stereo receiver.
No
Analog surround sound out Analog surround sound out Has analog rear speaker connectors for surround sound.
No
Free memory slot Free memory slot A free memory slot inside the PC for upgrades.
No

Features

Suitable for gaming Suitable for gaming All systems can play casual games such as solitaire and Angry Birds. Systems designated as suitable for gaming are more powerful and can play modern mainstream and intensive 3D video games with a frame rate and visual affects that does not make the game stop or stutter.
Yes
Wireless mouse Wireless mouse Comes with a mouse that is wireless.
Yes
Wireless keyboard Wireless keyboard Comes with a keyboard that is wireless.
Yes
Memory-card reader Memory-card reader At least one flash memory-card slot (CF, SD, XD, MS, etc.).
Yes
Blu-ray reader Blu-ray reader Lets you play Blu-ray high definition movies.
No
Voice command Voice command Voice control allows you to control your computer by speaking to it. Depending on the software you can perform commands such as search the web, play music, check and reply to email, and, update your social media.
Siri
Built-in webcam Built-in webcam A built-in webcam for videoconferencing.
Yes

Specs

Display size (in.) Display size For all-in-one desktops, the diagonal measure of the display.
21.5
Operating system (as tested) Operating system (as tested) The operating system that was installed on the computer at the time it was tested. The operating system is the software that controls the basic operation of the computer. Common examples are Windows and Mac OS. The operating system determines the "look and feel" of the PC.
macOS Sierra 10.12
Processor Processor Also known as the CPU (Central Processing Unit), the processor is responsible for running commands and handling data. Processors come in different speeds and may have two or more cores (ex. dual-core), which let you more quickly process multiple complex tasks.
Core i5
Memory (GB) Memory Also known as RAM, memory is a temporary storage area for data. Its size is an important factor for performance. We recommend at least 4GB of memory, or 8GB if you plan to run several large applications at the same time.
8
Storage (GB) Storage The amount of storage, a permanent area for the operating system, programs and data such as documents, music, and media files. Storage can be a hard drive, an SSD (solid state drive), or hybrid drive.
1000
Video adapter Video adapter Also known as the video card, the video adapter processes all the data that you see on your screen. They come in different speeds and may be integrated (most common, but is slower and uses up memory) or discrete (which is faster and has its own dedicated memory). If you will not be playing complex 3D games, any integrated graphics adapter will do. Otherwise, buy a discrete graphics adapter using a video processor from ATI or Nvidia with at least 256 MB of memory.
2GB AMD Radeon Pro 555
Video memory (GB) Video memory The amount of dedicated memory built into a graphics adapter. Most models have integrated graphics, which have no dedicated memory but are still suitable for most applications, including photo editing and watching movies. Others have discrete graphics adapters, which typically have 1 GB or more of dedicated video memory, to deliver smoother and more realistic graphics for 3D games.
2
Native resolution Native resolution For desktop ratings, this size only applies to all-in-one desktops, which have a built-in screen. It is the number of picture elements ("pixels") across the horizontal and vertical dimension of the screen. The higher the resolution within a given size screen, the finer the detail that can be displayed. No scaling is needed to view a picture or movie of this size, or to match the display resolution with the native resolution, sometimes called Default or Recommended.
4096 x 2304
Blu-ray or DVD Blu-ray or DVD The optical drive reads and/or writes to CDs and DVDs. Some computers come with Blu-ray drives (B), which let you play high-definition movies. Most models come equipped with a DVD-RW (D), also known as a DVD burner, which lets you read and write to DVDs. Other computers have no optical drive built-in (—).
Height (in.) Height The height of the computer chassis.
17.9
Width (in.) Width The width of the computer chassis.
20.8
Depth (in.) Depth The depth of the desktop chassis.
6.7
Warranty length (mos.) Warranty length The length in months of the manufacturer's standard warranty.
12
Tech support length (mos.) Tech support length The length in months of the manufacturer's free technical support by telephone.
3