When selecting an iMac for classroom labs, the key considerations include performance, affordability, and ease of maintenance. The Apple 24-inch iMac with M4 chip stands out as the best overall choice, offering powerful performance and modern features. The Apple 21.5-inch iMac with Intel Core i5 provides a reliable, budget-friendly option, while the 27-inch Retina 5K iMac excels for detailed visual work. However, tradeoffs include higher costs for premium models and potential over-specification for basic tasks. Continue reading for a detailed comparison to help you make the best decision for your classroom.
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Key Takeaways
- The M4 chip in the 2024 iMac offers significant performance gains suitable for demanding educational software.
- Choosing between Retina 5K displays and standard HD screens impacts both budget and visual clarity in classroom settings.
- Refurbished and renewed options can save money but may lack the latest features or warranty coverage.
- Memory size (16GB vs. 24GB) becomes more relevant as software demands increase, especially for multimedia tasks.
- Size and form factor influence classroom space management; larger screens improve visibility but may be less space-efficient.
| Apple 21.5″ iMac Desktop Computer, Intel Core i5, 8GB RAM, 1TB HDD, Mac OS | ![]() | Best Overall for Classroom Labs on a Budget | Processor: 2.3 GHz Intel Core i5-7360U Dual-Core | RAM: 8GB DDR4 | Storage: 1TB HDD | VIEW ON AMAZON | See Our Full Breakdown |
| Apple 2017 iMac with 2.3GHz Intel Core i5, 21.5-inch, 8GB RAM, 256GB SSD (Renewed) | ![]() | Best for Reliable Performance with Fast Storage | Processor: 2.3GHz Intel Core i5 | RAM: 8GB DDR4 | Storage: 256GB SSD | VIEW ON AMAZON | See Our Full Breakdown |
| Apple iMac 27-inch with Retina 5K Display (2020 Model, 8GB RAM, 512GB SSD) | ![]() | Best for Multimedia and High-Res Visuals | Display Size: 27 inches | Display Resolution: 5120 x 2880 | Processor: 3.3GHz 6-core 10th-gen Intel Core i5 | VIEW ON AMAZON | See Our Full Breakdown |
| Apple 2024 iMac All-in-One Desktop Computer with M4 Chip, 24-inch Retina Display, 24GB Memory, 512GB SSD – Silver | ![]() | Best for Cutting-Edge Performance and Seamless Integration | Processor: Apple M4, 10-core CPU and GPU | Display: 24-inch Retina, 4.5K | Memory: 24GB Unified Memory | VIEW ON AMAZON | See Our Full Breakdown |
| Apple 2024 iMac Air with M4 Chip, 24-inch Retina Display, 16GB RAM, 256GB SSD, Silver (Renewed) | ![]() | Best for Lightweight Power and Portability in Classrooms | Processor: Apple M4, 8-core | Display: 24-inch Retina, 4480×2520 | Memory: 16GB SDRAM | VIEW ON AMAZON | See Our Full Breakdown |
| Apple iMac 21.5-inch 2.7GHz Core i5 All-in-One Desktop (Renewed) | ![]() | Best Budget-Friendly Option for Classroom Labs | Operating System: macOS 10.12 Sierra | Display Size: 21.5 inches | Display Resolution: 1920 x 1080 pixels | VIEW ON AMAZON | See Our Full Breakdown |
| imac for classroom lab | Processor | Storage | Display | Dimensions |
|---|---|---|---|---|
| Apple 21.5" iMac Desktop Compu | 2.3 GHz Intel Core i5-7360U Dual-Core | 1TB HDD | 21.5-inch IPS LCD, 1920 x 1080 | 25 x 8 x 20 inches |
| Apple 2017 iMac with 2.3GHz In | 2.3GHz Intel Core i5 | 256GB SSD | 21.5 inches, 1920×1080 | 6.9 x 20.8 x 17.7 inches |
| Apple iMac 27-inch with Retina | 3.3GHz 6-core 10th-gen Intel Core i5 | 512GB SSD | — | — |
| Apple 2024 iMac All-in-One Des | Apple M4, 10-core CPU and GPU | 512GB SSD | 24-inch Retina, 4.5K | 21.54 x 5.79 x 18.15 inches |
| Apple 2024 iMac Air with M4 Ch | Apple M4, 8-core | 256GB SSD | 24-inch Retina, 4480×2520 | 21.53 x 5.78 x 18.14 inches |
| Apple iMac 21.5-inch 2.7GHz Co | 2.7GHz Core i5 | 256 GB SSD | — | — |
More Details on Our Top Picks
Apple 21.5″ iMac Desktop Computer, Intel Core i5, 8GB RAM, 1TB HDD, Mac OS
This refurbished 21.5-inch iMac offers a reliable macOS experience with a vivid Full HD IPS display and a capable 7th-gen Intel Core i5 processor. Compared with newer models like the M4-powered iMac Air, this setup is more affordable, making it ideal for schools with tight budgets. However, its HDD storage (instead of an SSD) means slower load times, which can hinder productivity in fast-paced classroom settings. Its 8GB RAM supports multitasking, but the older hardware limits future upgradeability and overall speed. The reliability of macOS makes it suitable for educational environments focused on basic productivity and media tasks.
Pros:- Vivid, accurate 21.5-inch Full HD display with IPS technology
- Reliable 7th-gen Intel Core i5 processor supports multitasking
- Affordable refurbished option for budget-conscious schools
- macOS environment familiar to many users
Cons:- Includes a traditional HDD instead of an SSD, slowing performance
- Refurbished condition may vary, affecting longevity
- Limited options for upgrading storage
Best for: Schools needing a dependable macOS workstation with a larger display at a lower cost
Not ideal for: Tech-forward classrooms requiring the latest hardware or fast SSD storage for intensive tasks
- Processor:2.3 GHz Intel Core i5-7360U Dual-Core
- RAM:8GB DDR4
- Storage:1TB HDD
- Display:21.5-inch IPS LCD, 1920 x 1080
- Graphics:Intel Iris Plus Graphics 640
- Operating System:Mac OS 10.12
- Dimensions:25 x 8 x 20 inches
Our verdict“This iMac is best suited for classrooms that prioritize affordability and basic macOS functionality over cutting-edge speed.”
Apple 2017 iMac with 2.3GHz Intel Core i5, 21.5-inch, 8GB RAM, 256GB SSD (Renewed)
Compared with the older HDD-based iMac, this 2017 model offers a significant performance boost thanks to its 256GB SSD, making it well-suited for classroom tasks that benefit from quick data access. Its renewed status ensures a like-new appearance, though accessories may not be original, and battery life can vary, which might be a concern in portable classroom setups. The Retina display provides clear visuals, making it better for multimedia projects than models with standard screens. While it lacks the latest processor advancements, its solid performance and renewed condition make it a smart choice for schools seeking a dependable macOS device without the latest hardware price tag.
Pros:- Fast 256GB SSD for quick boot times and data access
- Renewed product with minimal cosmetic imperfections
- Retina display offers crisp visuals
- Reliable 8GB RAM supports multitasking
Cons:- Accessories may not be original, possibly affecting compatibility
- Battery capacity can vary, affecting portability
- Older model may lack some newer macOS features
Best for: Educational institutions seeking a reliable, fast-booting macOS system with a good display
Not ideal for: Classrooms demanding the latest hardware or extensive upgrade options
- Processor:2.3GHz Intel Core i5
- RAM:8GB DDR4
- Storage:256GB SSD
- Display:21.5 inches, 1920×1080
- Graphics:Intel Iris Plus Graphics 640
- Operating System:macOS Sierra
- Dimensions:6.9 x 20.8 x 17.7 inches
Our verdict“This renewed iMac provides a good balance of performance and affordability for classrooms focused on reliability and visual clarity.”
Apple iMac 27-inch with Retina 5K Display (2020 Model, 8GB RAM, 512GB SSD)
This 2020 27-inch iMac shines in classrooms focused on multimedia, thanks to its stunning 5K Retina display with a billion colors. Its 3.3GHz 6-core 10th-generation Intel Core i5 processor delivers solid performance for editing, design, or media projects. Compared to the newer M4-based models, it offers more upgrade options—though it still limits RAM and storage upgrades post-purchase—making it more flexible for future classroom needs. The high-resolution display ensures students can view detailed visuals, but the high price and lack of dedicated graphics options mean it’s less suited for graphics-intensive tasks requiring specialized hardware. Its sleek design integrates well into modern classrooms valuing aesthetics and high-quality visuals.
Pros:- Stunning 5K Retina display with vibrant colors
- Powerful 10th-gen Intel processor for demanding multimedia tasks
- Fast SSD storage for quick data access
- Elegant all-in-one design
Cons:- Limited upgrade options for RAM and storage post-purchase
- High cost compared to smaller or newer models
- No dedicated graphics card for heavy graphics workloads
Best for: Media-focused classrooms needing a large, high-resolution display for editing and visual tasks
Not ideal for: Budget-conscious schools or classrooms requiring the latest hardware and upgrade flexibility
- Display Size:27 inches
- Display Resolution:5120 x 2880
- Processor:3.3GHz 6-core 10th-gen Intel Core i5
- Graphics:AMD Radeon Pro 5300
- Storage:512GB SSD
- Memory:8GB DDR4
- Weight:19.7 pounds
Our verdict“This iMac is ideal for multimedia classrooms where high-resolution visuals and processing power are priorities, despite its price and upgrade limitations.”
Apple 2024 iMac All-in-One Desktop Computer with M4 Chip, 24-inch Retina Display, 24GB Memory, 512GB SSD – Silver
This 2024 iMac with the M4 chip offers remarkable speed and connectivity, making it suitable for classrooms that need performance for diverse tasks — from research to multimedia. Its 24-inch Retina display is vibrant and bright, ensuring visuals are sharp. The 24GB of RAM supports multitasking for multiple users or applications, a step ahead of older models. However, the high price and fixed 512GB SSD may deter budget-conscious schools or heavy data users. Its sleek design and advanced connectivity, including Thunderbolt 4 and Wi-Fi 6E, make it a future-ready choice, though upgradeability is limited. It’s perfect for environments prioritizing speed, modern features, and excellent user experience.
Pros:- Powerful M4 chip with 10-core CPU and GPU for demanding tasks
- Vibrant 24-inch Retina display with high brightness
- Ample 24GB RAM supports multitasking
- Advanced connectivity including Thunderbolt 4 and Wi-Fi 6E
Cons:- Premium price point may be prohibitive for some schools
- Limited to 512GB SSD storage, which might be small for large datasets
- No upgrade options for internal components
Best for: Tech-forward classrooms seeking future-proof performance with excellent display and connectivity
Not ideal for: Schools with limited budgets or requiring extensive local storage for large files
- Processor:Apple M4, 10-core CPU and GPU
- Display:24-inch Retina, 4.5K
- Memory:24GB Unified Memory
- Storage:512GB SSD
- Connectivity:Wi-Fi 6E, Bluetooth 5.3, Thunderbolt 4
- Dimensions:21.54 x 5.79 x 18.15 inches
Our verdict“This iMac excels in classrooms that value speed, modern features, and seamless device integration, despite its higher cost.”
Apple 2024 iMac Air with M4 Chip, 24-inch Retina Display, 16GB RAM, 256GB SSD, Silver (Renewed)
This renewed iMac Air with the M4 chip combines portability with robust performance, thanks to its 8-core CPU and 24-inch Retina display. Its lighter weight and smaller footprint make it easier to deploy across classrooms or for use in flexible learning spaces. The 16GB RAM supports multitasking, but the 256GB SSD could be limiting for data-heavy tasks or large media files. Compared to the 2024 M4 iMac, this model offers a more portable form factor, but its renewed status raises questions about longevity. It’s a smart pick for environments where mobility and style matter most, and budget constraints prevent investing in a brand-new device.
Pros:- Powerful M4 8-core chip for fast, responsive performance
- Vibrant 24-inch Retina display with high resolution
- Lightweight and portable design
- Includes 16GB RAM for efficient multitasking
Cons:- Limited to 256GB SSD storage, less suitable for large files
- Renewed product may have less lifespan than new units
- Heavy at over 22 pounds, less portable than some might expect
Best for: Classrooms requiring portable, high-performance machines with good display quality
Not ideal for: Heavy multimedia or data-heavy courses that require larger local storage or future upgrades
- Processor:Apple M4, 8-core
- Display:24-inch Retina, 4480×2520
- Memory:16GB SDRAM
- Storage:256GB SSD
- Connectivity:Wi-Fi 6E, Bluetooth 5.3, Thunderbolt 4
- Dimensions:21.53 x 5.78 x 18.14 inches
Our verdict“This iMac Air strikes a balance between portability and performance, ideal for flexible learning spaces with moderate storage needs, despite its renewed status.”
Apple iMac 21.5-inch 2.7GHz Core i5 All-in-One Desktop (Renewed)
This renewed iMac offers a practical balance of performance and affordability for classroom environments, especially when compared to newer models like the 2024 iMac with M4 chip, which boasts faster processing and a more modern display. Its 21.5-inch display with a 1920×1080 resolution provides clear visuals for educational content, while the 2.7GHz Core i5 ensures decent multitasking capability. The SSD accelerates boot and load times, making it suitable for classroom use where quick startup is essential. However, the macOS 10.12 Sierra limits compatibility with newer apps, and the all-in-one design restricts future upgrades—factors that might hinder long-term usability. This option makes sense for schools on tight budgets that need a reliable, tested machine, but it’s less ideal for labs requiring up-to-date software or future expandability.
Pros:- Affordable renewed option with tested reliability
- Decent performance for standard classroom tasks
- Fast SSD improves responsiveness
- High-resolution display enhances visual clarity
Cons:- Limited to macOS 10.12 Sierra, restricting software updates
- All-in-one design makes upgrades difficult
- Pre-owned condition may vary in wear
Best for: Budget-conscious educational institutions needing a dependable, entry-level Mac for basic classroom tasks.
Not ideal for: Tech-forward labs requiring the latest software support or hardware upgrades, as this model’s outdated OS limits compatibility.
- Operating System:macOS 10.12 Sierra
- Display Size:21.5 inches
- Display Resolution:1920 x 1080 pixels
- Processor:2.7GHz Core i5
- Memory:8 GB DDR3 SDRAM
- Storage:256 GB SSD
- Weight:12.5 pounds
- Connectivity:Ethernet, Thunderbolt, USB 3.0, Wi-Fi
- Color:Silver
Our verdict“This renewed iMac is best suited for schools seeking an affordable, reliable Mac for basic classroom activities without the need for future-proofing.”

How We Picked
Our evaluation focused on performance, price, upgradeability, display quality, and overall value for classroom environments. We prioritized models with reliable performance for multitasking, durable build quality for frequent use, and compatibility with educational software. Additional factors included ease of setup and maintenance, as well as budget considerations. Products were ranked based on how well they balance these criteria, with a preference for newer models that incorporate the latest Apple hardware and software innovations relevant to classroom use.| imac for classroom lab | Graphics | Operating System | Connectivity |
|---|---|---|---|
| Apple 21.5" iMac Desktop Compu | Intel Iris Plus Graphics 640 | Mac OS 10.12 | — |
| Apple 2017 iMac with 2.3GHz In | Intel Iris Plus Graphics 640 | macOS Sierra | — |
| Apple iMac 27-inch with Retina | AMD Radeon Pro 5300 | — | — |
| Apple 2024 iMac All-in-One Des | — | — | Wi-Fi 6E, Bluetooth 5.3, Thunderbolt 4 |
| Apple 2024 iMac Air with M4 Ch | — | — | Wi-Fi 6E, Bluetooth 5.3, Thunderbolt 4 |
| Apple iMac 21.5-inch 2.7GHz Co | — | macOS 10.12 Sierra | Ethernet, Thunderbolt, USB 3.0, Wi-Fi |









