6 Best Alternatives to the Apple iMac 21.5-Inch Core i5 (2026)

How alternatives compare to original

Apple iMac 21.5-Inch Core i5 Desktop

This Apple iMac keeps the same 21.5-inch screen and Core i5 processor you expect. It offers 8GB of RAM for smooth multitasking. The main difference is the physical design. This model is heavier at 18.3 pounds and has a deeper chassis than the original. It suits users who want a budget-friendly macOS machine for light office work. You trade some compactness for a reliable, familiar interface. It is ideal for media consumption and basic tasks. The silver finish matches the original aesthetic. You get a solid everyday computer without the premium price tag. It is a practical choice for students or home users.

Apple iMac 21.5-Inch Core i5 Desktop

This Apple iMac features a Core i5 processor, 8GB of RAM, and a 256GB SSD. It shares the 21.5-inch screen size with the original. The weight is slightly higher at 21 pounds. This model is designed for basic home office use and web browsing. It fits users who value macOS stability and space efficiency. You get solid everyday performance for light tasks. The silver design is consistent with the original line. It is a good option for students or light users. You do not get raw power, but you get reliability. It is a straightforward desktop for daily computing needs. The compact form factor remains a key selling point for small spaces.

HP ProOne 21.5-Inch All-in-One PC

The HP ProOne 21.5-inch All-in-One PC switches from macOS to Windows 11 Pro. It uses a Core i5 processor, 8GB of RAM, and a 256GB SSD. The 21.5-inch screen is similar in size. This model targets professionals who need business features. It offers a compact footprint suitable for workstations. You trade the Apple ecosystem for Windows compatibility. The build is designed for reliable daily computing. It is ideal for users who prefer Windows applications. The performance is solid for business tasks. You get a professional-grade machine with essential connectivity. It is a strong alternative if you need Windows software. The design is functional and space-saving. It suits office environments well.

Apple 21.5-Inch iMac Core i5

This Apple iMac retains the 21.5-inch screen and Core i5 processor. It includes 8GB of RAM for standard performance. The key difference is the storage. It offers a 1TB HDD instead of a smaller SSD. This provides more space for files and media. The weight is 12.5 pounds, similar to the original. It is designed for users who need large storage on macOS. You trade speed for capacity. The 1080p screen delivers clear visuals. It is suitable for everyday tasks with ample storage. The silver design is consistent with the iMac line. It fits users who prioritize storage over modern software versions. It is a reliable choice for media libraries. The large hard drive handles bulk data well.

HP 21.5-inch All-in-One Intel N100 Desktop

The HP 21.5-inch All-in-One Desktop uses an Intel N100 processor and 8GB of RAM. It features a clear FHD screen. The model runs Windows 11. It is designed for office work and student tasks. The weight is 15 pounds, which is lighter than some originals. It includes a camera for video calls. You trade processing power for a tidy, functional workspace. It is ideal for users who prioritize connectivity and clarity. The white design is modern and clean. It fits small desks well. The performance is sufficient for daily tasks. You get a practical Windows machine. It is a good option for basic computing needs. The compact size saves space. It is reliable for students and home offices.

Lenovo ThinkCentre 24" Core i5 All-in-One Desktop

The Lenovo ThinkCentre 24-inch All-in-One Desktop uses a Core i5 processor and 32GB of RAM. It includes a 1TB SSD and runs Windows 11 Pro. The screen is larger at 24 inches. The color is Luna Grey. This model offers significantly more memory than the original. It is designed for Windows users who need high RAM capacity. You trade macOS for Windows and a larger display. The performance is strong for multitasking. It is ideal for users who prioritize memory and smoothness. The 1TB SSD provides fast storage. It is a powerful alternative for heavy workloads. The design is professional and sturdy. It suits users who need robust performance. The larger screen enhances productivity. It is a top choice for memory-intensive tasks.

Quick picks

Our 7 picks

1 Best overall

Apple iMac 21.5-Inch Core i5 All-in-One

Best for: compact macOS desktop setups

Processor

2.7GHz Core i5

System Memory

8GB

Storage Capacity

256GB Solid State Drive

Screen Size

21.5in

Operating System

MacOS 10.12 Sierra

Dimensions

27 × 11 × 24 inches

View on Amazon: Apple iMac 21.5-Inch Core i5 All-in-One

This Apple iMac combines a 21.5-inch display with a 2.7GHz Core i5 processor and 8GB of system memory. It includes a 256GB solid state drive and runs macOS 10.12 Sierra. The all-in-one design integrates the computer and monitor into a single silver unit. It suits users who prefer a compact desktop setup with Apple's operating system for everyday tasks.

Pros

• 2.7GHz Intel Core i5 processor
• 21.5-inch screen size
• 8GB system memory
• 256GB solid state drive

Cons

• 256GB storage capacity is limited
• 8GB RAM may restrict heavy multitasking
• macOS 10.12 Sierra is an older version

Good fit if

• You want a compact all-in-one desktop
• You prefer the macOS operating system
• You need basic performance for daily tasks

Skip if

• You require high-end gaming performance
• You need more than 8GB of RAM
• You want the latest macOS version

Verdict: Apple iMac 21.5in Core i5 offers a compact, integrated solution for users who value macOS and space efficiency over raw power or large storage.

2 Best budget

Apple iMac 21.5-Inch Core i5 Desktop

Best for: basic macOS tasks on a budget

Processor

Intel Core i5-7360U

System Memory

8GB DDR4

Storage Capacity

1TB HDD

Screen Size

21.5-inch

Display Resolution

1920x1080

Graphics

Intel Iris Plus Graphics 640

View on Amazon: Apple iMac 21.5-Inch Core i5 Desktop

This renewed Apple iMac offers a 21.5-inch 1080p display paired with a 7th generation Intel Core i5 processor and 8GB of RAM. It includes 1TB of HDD storage and Intel Iris Plus Graphics. You get a compact all-in-one design that fits well in home or small office spaces. It runs macOS and provides standard connectivity options like USB 3.0 and Bluetooth 4.2 for your peripherals.

Pros

• 21.5-inch 1920x1080 LED display
• Intel Core i5-7360U dual-core processor
• 8GB DDR4 system memory
• 1TB HDD storage capacity
• Intel Iris Plus Graphics 640

Cons

• HDD storage is slower than SSD options
• 8GB RAM limits heavy multitasking
• 2017 model lacks modern connectivity standards

Good fit if

• You need a compact desktop for basic tasks
• You prefer the macOS operating system
• You want a large 21.5-inch screen in one unit

Skip if

• You require high-speed SSD storage
• You need 16GB or more RAM for professional work
• You want the latest generation hardware

Verdict: Apple 2017 iMac 21.5-Inch Core i5 suits users who want a reliable macOS machine for everyday computing. It is ideal for light office work and media consumption on a budget.

3 Also great

Apple iMac 21.5-Inch Core i5 Desktop

Best for: Basic home office and web browsing

Processor

2.3GHz Intel Core i5

System Memory

8GB

Storage Capacity

256GB SSD

Screen Size

21.5-inch

Dimensions

6.9 × 20.8 × 17.7 inches

Weight

21 pounds

View on Amazon: Apple iMac 21.5-Inch Core i5 Desktop

This Apple iMac pairs a 21.5-inch display with a 2.3GHz Intel Core i5 processor and 8GB of RAM. It includes 256GB of SSD storage for fast boot times and app loading. The system runs macOS on an all-in-one design. It suits users who want a compact desktop with reliable daily performance for web browsing and office tasks. The renewed condition ensures the battery exceeds 80% capacity.

Pros

• 2.3GHz Intel Core i5 processor
• 21.5-inch display size
• 8GB system memory
• 256GB SSD storage

Cons

• 256GB storage capacity is limited
• 8GB RAM restricts heavy multitasking
• Renewed condition with generic accessories

Good fit if

• You need a compact desktop for basic tasks
• You prefer the macOS ecosystem
• You want a reliable all-in-one design

Skip if

• You require high-end gaming performance
• You need extensive local storage space
• You prefer brand new sealed products

Verdict: Apple 2017 iMac 21.5-Inch Core i5 offers solid everyday performance for home office use. It fits students and light users who value macOS and space efficiency over raw power.

4 Best premium

HP ProOne 21.5-Inch All-in-One PC

Best for: compact business workstations

Processor

Intel Core i5-8500T

System Memory

8GB DDR4

Storage Capacity

256GB SSD

Screen Size

21.5"

Display Resolution

Full HD

Operating System

Windows 11 Pro

View on Amazon: HP ProOne 21.5-Inch All-in-One PC

The HP ProOne 600 G4 is a 21.5-inch all-in-one desktop with an Intel Core i5-8500T processor. It pairs 8GB DDR4 RAM with a 256GB SSD for responsive performance. The Full HD display fits in compact spaces. Windows 11 Pro provides business-grade features. This system suits users who need reliable multitasking without clutter.

Pros

• Intel Core i5-8500T processor up to 3.5GHz
• 21.5-inch Full HD display
• 8GB DDR4 RAM and 256GB SSD
• Windows 11 Pro operating system

Cons

• Only 256GB of storage capacity
• 8GB RAM limits heavy multitasking
• T-series processor has lower base speed

Good fit if

• You want a compact desktop for office tasks
• You prefer Windows 11 Pro features
• You need a clean setup with minimal cables

Skip if

• You require large storage for media files
• You need high-end gaming performance
• You prefer macOS ecosystem integration

Verdict: HP ProOne 600 G4 i5 AIO offers solid business performance in a small footprint. It fits professionals who need Windows 11 Pro and reliable daily computing.

5 Best 1tb hdd

Apple 21.5-Inch iMac Core i5

Best for: Users needing 1TB storage on macOS

Processor

Intel Core i5-7360U

System Memory

8GB DDR4

Storage Capacity

1TB HDD

Screen Size

21.5"

Display Resolution

1920 x 1080

Graphics

Intel Iris Plus Graphics 640

View on Amazon: Apple 21.5-Inch iMac Core i5

This Apple iMac pairs a 2.3 GHz Intel Core i5-7360U processor with 8GB of DDR4 RAM. It features a 21.5-inch 1920 x 1080 IPS display and 1TB of HDD storage. The system runs Mac OS 10.12 and uses Intel Iris Plus Graphics 640. It suits users who need a dedicated desktop for standard tasks. The large hard drive offers ample space for files. It is a solid all-in-one option for Mac users.

Pros

• 1TB HDD provides large storage capacity
• 21.5-inch 1080p IPS display
• Intel Core i5-7360U processor
• 8GB DDR4 RAM

Cons

• HDD is slower than SSD options
• Older Mac OS 10.12 version
• Intel Iris Plus Graphics 640 is entry-level

Good fit if

• You need 1TB of storage space
• You prefer the macOS operating system
• You want a 21.5-inch all-in-one setup

Skip if

• You require fast SSD storage speeds
• You need the latest macOS version
• You want high-end gaming graphics

Verdict: Apple iMac 21.5" 1TB HDD delivers reliable performance for everyday tasks with its large hard drive and 1080p screen. It fits users who prioritize storage capacity and macOS stability over speed and modern software versions.

6 Also great

HP 21.5-inch All-in-One Intel N100 Desktop

Best for: Office work and student tasks

Processor

Intel N100

System Memory

8GB RAM

Storage Capacity

384GB

Screen Size

21.5"

Display Resolution

1920 x 1080

Graphics

Intel UHD Graphics

View on Amazon: HP 21.5-inch All-in-One Intel N100 Desktop

This HP all-in-one desktop pairs a 21.5-inch FHD display with an Intel N100 processor and 8GB of RAM. It runs Windows 11 Home and includes a front-facing 720p camera. The unit offers Wi-Fi 6 connectivity and an adjustable stand. It suits users seeking a compact, office-ready system for web browsing and document work rather than high-performance gaming.

Pros

• Intel N100 quad-core processor with up to 3.4GHz boost
• 21.5-inch 1920 x 1080 anti-glare VA display
• Includes front-facing 720p camera and DTS Audio speakers
• Wi-Fi 6 and Bluetooth connectivity
• Adjustable stand tilts from -6° to 21°

Cons

• Intel UHD Graphics limits gaming and heavy visual tasks
• 8GB RAM is lower than the 8GB-16GB range of comparable iMac alternatives
• 384GB storage is smaller than the 1TB options found in some competitors

Good fit if

• You need a Windows 11 system for office or student work
• You want a compact desktop with built-in camera and speakers
• You prefer an adjustable monitor stand for ergonomic viewing

Skip if

• You require dedicated graphics for gaming or video editing
• You need more than 8GB of system memory for multitasking
• You are looking for a Mac ecosystem experience

Verdict: HP 21.5" N100 All-in-One delivers a functional Windows 11 workspace with a clear FHD screen and essential connectivity. It fits users who prioritize a tidy, camera-equipped desktop for daily tasks over raw processing power.

7 Best 32gb ram

Lenovo ThinkCentre 24" Core i5 All-in-One Desktop

Best for: Windows users needing high RAM capacity

Processor

Intel Core i5-13420H

System Memory

32GB DDR5

Storage Capacity

1TB SSD

Screen Size

23.8"

Display Resolution

FHD (1920x1080)

Touchscreen

Non-Touch

View on Amazon: Lenovo ThinkCentre 24" Core i5 All-in-One Desktop

This Lenovo ThinkCentre all-in-one desktop pairs a 13th-gen Intel Core i5-13420H processor with 32GB of DDR5 RAM. The 24-inch FHD IPS display offers 100Hz refresh rates and 99% sRGB coverage. It runs Windows 11 Pro and includes a 1TB SSD. This configuration suits users who need substantial memory for multitasking or creative work without the Apple ecosystem.

Pros

• 32GB DDR5 system memory for heavy multitasking
• Intel Core i5-13420H with up to 4.6 GHz turbo
• 24-inch FHD IPS display with 100Hz refresh rate
• Windows 11 Pro operating system included

Cons

• Non-touch screen limits interactive use
• 250 nits brightness is lower than typical premium displays
• 24-inch size is smaller than the 21.5-inch iMac comparison baseline

Good fit if

• You require 32GB of RAM for demanding applications
• You prefer Windows 11 Pro over macOS
• You want a high-refresh-rate display for smooth visuals

Skip if

• You need a touchscreen for direct interaction
• You are locked into the Apple ecosystem
• You require a larger 27-inch or bigger screen

Verdict: Lenovo ThinkCentre 24" i5 32GB RAM AIO delivers strong performance for Windows users who prioritize memory capacity and display smoothness over brand loyalty or touch capabilities.

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