6 Best Alternatives to the HP 21.5-Inch Celeron All-in-One Desktop (2026)
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
The HP 21.5-Inch Celeron All-in-One Desktop offers a compact setup with an Intel Celeron J4025 processor, 8GB of DDR4 RAM, and a 21.5-inch FHD display. This combination works well for basic home office tasks, web browsing, and document editing. You get Windows 11 Home and a privacy camera for video calls, all in a small footprint that saves desk space. The 128GB SSD provides fast access to essential files, though storage is limited.
If you need alternatives to the hp 21 5 inch celeron all in one desktop, consider options with stronger processors or different operating systems. Some users may prefer the Apple iMac for macOS ecosystem integration or the HP ProOne for Windows 11 Pro features. Others might want a larger 24-inch screen or more storage capacity. These alternatives were chosen because their specs overlap with the original, offering variations in processor power, screen size, or software environment while maintaining the all-in-one form factor you likely value.
Comparing key specs and value
HP 21.5-inch All-in-One Intel N100 Desktop
The HP 21.5-inch All-in-One with Intel N100 offers a more modern processor than the Celeron J4025 in the original. While both have 8GB of RAM and similar screen sizes, the N100 chip provides better efficiency and performance for daily office work. This model keeps the compact white design but may feel slightly heavier at 15 pounds. You get reliable connectivity and an adjustable display, making it a practical upgrade for students or home users who need more speed than the Celeron provides without moving to a larger form factor.
Apple iMac 21.5-Inch Core i5 Desktop
This Apple iMac switches from Windows to macOS, which changes your entire workflow. It features a Core i5 processor and 8GB of RAM, offering smoother performance for creative tasks compared to the Celeron. The standout feature is the 1TB storage, which is vastly larger than the 128GB SSD in the HP. It weighs more at 18.3 pounds and has a silver finish. This is the right choice if you prefer the Apple ecosystem and need ample space for files, rather than just basic web browsing and document editing.
Apple iMac 21.5-Inch Core i5 Desktop
Another 21.5-inch iMac option, this model also runs macOS with a Core i5 and 8GB of RAM. It includes a 256GB SSD, which is double the storage of the original HP. The design is slightly heavier at 21 pounds. It provides a cleaner, tidier setup suitable for students or light home office use. If you want a Mac but do not need the massive 1TB drive of the other iMac, this model offers a balanced mix of speed and storage for everyday tasks.
HP ProOne 21.5-Inch All-in-One PC
The HP ProOne 600 G4 upgrades you from Windows 11 Home to Windows 11 Pro, which adds business-focused security and management features. It uses a Core i5 processor and 8GB of RAM, offering significantly more power than the Celeron J4025. With 256GB of SSD storage, you get double the space of the original. This all-in-one is designed for office workers who need reliability and professional OS features. It is ideal for business users who do not require high-end gaming capabilities or massive storage volumes.
BlairTech 24-Inch Core i5 ChromeOS Flex Desktop
This BlairTech desktop offers a larger 24-inch screen compared to the 21.5-inch display on the HP. It runs ChromeOS Flex with a Core i5 processor and 8GB of RAM. The 128GB SSD matches the original storage capacity. The black design is distinct from the white HP. This is a solid upgrade for users who want a bigger screen and stronger processing power for web-based tasks. It is best for those who do not need Windows compatibility and prefer a simpler, cloud-centric operating system.
Apple 21.5-Inch iMac Core i5
This Apple iMac features a Core i5 processor and 8GB of RAM, providing better performance than the Celeron for general tasks. It includes a 1TB HDD, offering massive storage for documents and photos. The silver design weighs 18.3 pounds. It runs macOS, which is a significant shift from Windows 11 Home. This model is ideal for users who value ample storage space and the Apple ecosystem over raw processing speed or SSD performance. It fits home users who need a tidy setup with plenty of room for files.
Quick picks
Our 7 picks
HP 21.5-Inch Celeron All-in-One Desktop
Best for: basic home office tasks
- Processor
- Intel Celeron J4025
- System Memory
- 8GB DDR4
- Storage Capacity
- 128GB SSD
- Screen Size
- 21.5"
- Display Resolution
- FHD (1920 x 1080)
- Graphics
- Intel UHD Graphics 600
View on Amazon: HP 21.5-Inch Celeron All-in-One Desktop Affiliate link
This HP all-in-one desktop pairs a 21.5-inch FHD display with an Intel Celeron J4025 processor and 8GB of DDR4 RAM. It includes 128GB of SSD storage and runs Windows 11 Home. The compact design fits small desks, while the included docking station adds connectivity. It suits users needing basic computing for web browsing and office tasks without requiring high performance.
Pros
- Intel Celeron J4025 processor with up to 2.9 GHz boost
- 21.5-inch FHD (1920 x 1080) anti-glare display
- 8GB DDR4 RAM for multitasking
- Includes 7-in-1 docking station with extra storage
Cons
- Only 2 cores and 2 threads limit heavy workloads
- 128GB SSD storage is small for large libraries
- Intel UHD Graphics 600 is not for gaming
Good fit if
- You need a simple desktop for web browsing
- You want a compact unit for a small workspace
- You require extra ports via the docking station
Skip if
- You play modern 3D games
- You edit 4K video regularly
- You need more than 128GB of internal storage
Verdict: HP 21.5" Celeron AIO Desktop provides basic performance for light tasks. It fits home offices needing simple web access and document editing.
HP 21.5-inch All-in-One Intel N100 Desktop
Best for: Office work and study tasks
- Processor
- Intel N100
- System Memory
- 8GB DDR5
- Storage Capacity
- 128GB SSD
- 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 Affiliate link
This HP all-in-one desktop features a 21.5-inch FHD display and an Intel N100 quad-core processor. It includes 8GB of RAM and 384GB of storage, running Windows 11 Home. The system offers Wi-Fi 6, Bluetooth, and a 720p camera. It is designed for office work and study, providing a sharp visual experience with an adjustable stand.
Pros
- Intel N100 quad-core processor with up to 3.4GHz boost
- 21.5-inch 1920 x 1080 anti-glare VA display
- Includes Wi-Fi 6 and Bluetooth connectivity
- Adjustable stand tilts from -6° to 21°
Cons
- 8GB RAM is lower than the 16GB or 32GB options available in variations
- 384GB storage is less than the 640GB option in variations
- Intel UHD Graphics is suitable for basic tasks but not gaming
Good fit if
- You need a compact desktop for office work or study
- You want a system with Windows 11 and modern connectivity
- You prefer an adjustable stand for comfortable viewing angles
Skip if
- You require high-performance gaming capabilities
- You need more than 8GB of RAM for heavy multitasking
- You prefer a larger 24-inch or 27-inch display
Verdict: HP 21.5" N100 All-in-One Desktop is a practical choice for users who need reliable performance for daily tasks and office work. It fits buyers who value modern connectivity and an adjustable display in a compact form factor.
Apple iMac 21.5-Inch Core i5 Desktop
Best for: macOS users needing 1TB storage
- 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 Affiliate link
This renewed Apple iMac features a 21.5-inch 1080p display and an Intel Core i5-7360U processor. It includes 8GB of DDR4 RAM and 1TB of HDD storage. The system runs Mac OS X and offers Intel Iris Plus Graphics 640. It suits users who prefer macOS for home or small business tasks. The all-in-one design keeps your desk tidy with built-in connectivity options.
Pros
- Intel Core i5-7360U processor for reliable performance
- 21.5-inch 1920x1080 FHD display
- 8GB DDR4 system memory
- 1TB HDD storage capacity
- Intel Iris Plus Graphics 640
Cons
- Uses a 1TB HDD instead of a faster SSD
- 2017 model year may lack latest software support
- Heavier build at 18.3 pounds
Good fit if
- You want a macOS all-in-one desktop
- You need 1TB of local storage
- You prefer a compact 21.5-inch screen
Skip if
- You require Windows operating system
- You need high-end gaming graphics
- You want the latest processor generation
Verdict: Apple 2017 iMac 21.5-inch is a solid choice for macOS users needing ample storage and a clean desktop setup. It fits small offices or home users who prioritize screen quality and brand ecosystem over raw processing speed.
Apple iMac 21.5-Inch Core i5 Desktop
Best for: Basic home office and student tasks
- 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 Affiliate link
This 2017 Apple iMac offers a 21.5-inch display paired with a 2.3GHz Intel Core i5 processor. It includes 8GB of RAM and a 256GB SSD for storage. The system runs macOS and comes in a silver finish. It is a renewed unit, meaning it has been inspected for functionality. This all-in-one desktop suits users who prefer the Apple ecosystem and need reliable performance for everyday tasks.
Pros
- 2.3GHz Intel Core i5 processor
- 21.5-inch display size
- 8GB of system memory
- 256GB SSD storage capacity
Cons
- 256GB SSD is smaller than modern standards
- 8GB RAM limits heavy multitasking
- 2017 model year is outdated
Good fit if
- You want a compact 21.5-inch all-in-one design
- You prefer macOS over Windows
- You need basic productivity performance
Skip if
- You require high-end gaming capabilities
- You need large storage capacity
- You want the latest processor technology
Verdict: Apple 2017 iMac 21.5-inch i5 provides a solid entry into macOS all-in-one computing for light users. It fits students or home offices needing a tidy setup with decent everyday speed.
HP ProOne 21.5-Inch All-in-One PC
Best for: business users needing Windows 11 Pro
- 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 Affiliate link
This HP ProOne 600 G4 all-in-one desktop pairs an 8th Gen Intel Core i5-8500T processor with 8GB DDR4 RAM and a 256GB SSD. You get a 21.5-inch Full HD display and Windows 11 Pro. It includes a keyboard and mouse. This setup offers business-grade performance for office tasks. It suits users who need reliable multitasking and enterprise security features in a compact form factor.
Pros
- Intel Core i5-8500T processor up to 3.5GHz
- Windows 11 Pro operating system
- 21.5-inch Full HD display
- Includes keyboard and mouse
Cons
- Only 8GB of system memory
- 256GB SSD storage capacity
- No mention of optical drive
Good fit if
- You need Windows 11 Pro for business features
- You want a complete desktop with included peripherals
- You prefer a compact 21.5-inch screen size
Skip if
- You require more than 8GB of RAM for heavy workloads
- You need large storage capacity beyond 256GB
- You want a larger display than 21.5 inches
Verdict: HP ProOne 600 G4 i5 AIO provides solid business performance for office workers who value Windows 11 Pro and included peripherals. It is ideal for users who do not need high-end gaming specs or massive storage.
BlairTech 24-Inch Core i5 ChromeOS Flex Desktop
Best for: Web-based tasks on a larger 24-inch screen
- Processor
- Intel Core i5
- System Memory
- 8 GB
- Storage Capacity
- 128 GB SSD
- Screen Size
- 24"
- Operating System
- Google ChromeOS Flex
View on Amazon: BlairTech 24-Inch Core i5 ChromeOS Flex Desktop Affiliate link
This BlairTech all-in-one pairs a 24-inch monitor with an Intel Core i5 processor and 8 GB of RAM. It runs Google ChromeOS Flex, not Windows, which means it relies on web-based apps rather than traditional desktop software. The 128 GB SSD provides fast storage for everyday tasks. It includes a wireless keyboard and mouse. This setup suits users who want a larger screen and faster performance than the Celeron alternatives, provided they are comfortable with the ChromeOS environment.
Pros
- Intel Core i5 processor for smooth everyday performance
- 24-inch display offers more screen real estate than 21.5-inch models
- Includes wireless keyboard and mouse for immediate use
- 8 GB RAM supports responsive multitasking
Cons
- Runs Google ChromeOS Flex instead of Windows
- Cannot install traditional Windows desktop programs
- 128 GB SSD storage is limited for large files
Good fit if
- You need a larger 24-inch screen for better visibility
- You primarily use web apps and cloud services
- You want faster performance than a Celeron processor
Skip if
- You require Windows for specific desktop software
- You need to install traditional .exe applications
- You prefer a 21.5-inch display size
Verdict: BlairTech 24-Inch ChromeOS Flex i5 AIO delivers a larger screen and stronger processor for web-centric users. It is a solid upgrade for those who do not need Windows compatibility.
Apple 21.5-Inch iMac Core i5
Best for: macOS users needing 1TB storage
- 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 Affiliate link
This 21.5-inch iMac pairs an Intel Core i5-7360U processor with 8GB of DDR4 RAM and a 1TB hard drive. The display offers 1920x1080 resolution on an IPS panel. It runs Mac OS 10.12. This setup suits users who need ample storage for files and prefer macOS. The integrated Intel Iris Plus Graphics handles basic tasks. It is a solid all-in-one option for everyday computing needs.
Pros
- 1TB HDD storage capacity
- Intel Core i5-7360U processor
- 8GB DDR4 RAM
- 21.5-inch 1080p IPS display
Cons
- Uses a slower HDD instead of SSD
- Outdated Mac OS 10.12 operating system
- Only dual-core processor
Good fit if
- You need large local storage for media
- You prefer the macOS environment
- You want a compact 21.5-inch screen
Skip if
- You require fast SSD boot times
- You need the latest macOS version
- You want modern gaming performance
Verdict: Apple 21.5" iMac 1TB HDD delivers reliable performance for general tasks with its i5 chip and ample storage. It fits users who value macOS and need space for documents or photos rather than high-speed gaming.
Specifications side by side
| Spec | HP 21.5-Inch Celeron All-in-One Desktop | HP 21.5-inch All-in-One Intel N100 Desktop | Apple iMac 21.5-Inch Core i5 Desktop | Apple iMac 21.5-Inch Core i5 Desktop | HP ProOne 21.5-Inch All-in-One PC | BlairTech 24-Inch Core i5 ChromeOS Flex Desktop | Apple 21.5-Inch iMac Core i5 |
|---|---|---|---|---|---|---|---|
| Processor | Intel Celeron J4025 | Intel N100 | Intel Core i5-7360U | 2.3GHz Intel Core i5 | Intel Core i5-8500T | Intel Core i5 | Intel Core i5-7360U |
| System Memory | 8GB DDR4 | 8GB DDR5 | 8GB DDR4 | 8GB | 8GB DDR4 | 8 GB | 8GB DDR4 |
| Storage Capacity | 128GB SSD | 128GB SSD | 1TB HDD | 256GB SSD | 256GB SSD | 128 GB SSD | 1TB HDD |
| Screen Size | 21.5" | 21.5" | 21.5-inch | 21.5-inch | 21.5" | 24" | 21.5" |
| Display Resolution | FHD (1920 x 1080) | 1920 x 1080 | 1920x1080 | not stated | Full HD | not stated | 1920 x 1080 |
| Graphics | Intel UHD Graphics 600 | Intel UHD Graphics | Intel Iris Plus Graphics 640 | not stated | not stated | not stated | Intel Iris Plus Graphics 640 |
| Operating System | Windows 11 Home | Windows 11 Home | Mac OS X | not stated | Windows 11 Pro | Google ChromeOS Flex | Mac OS 10.12 |
| Memory | 8GB RAM | 8GB RAM | 8GB RAM | 8GB RAM | 8GB RAM | 8GB RAM | 8GB RAM |
| Storage | 128GB SSD | 128GB SSD | not stated | 256GB SSD | 256GB SSD | 128GB SSD | 1TB HDD |
| Dimensions | 11 × 24 × 19 inches | 24 × 21 × 7 inches | 17.7 × 20.8 × 6.9 inches | 6.9 × 20.8 × 17.7 inches | not stated | not stated | 25 × 8 × 20 inches |
| Weight | 12 pounds | 18 pounds | 18.3 pounds | 21 pounds | not stated | not stated | not stated |
| Size | 8GB | 288GB Storage | not stated | 21.5" 1080p Display | not stated | not stated | not stated | not stated |
| Color | White | White | Silver | Silver | not stated | Black | Silver |
| Model | HP All-in-One Desktop | HP22 | A1418 | MMQA2LL/A | 600 G4 All-in-One | ESSENTIAL | MMQA2LL/A |
Frequently asked questions
Is the HP 21.5-inch Celeron all-in-one good for gaming?
No. The Intel Celeron J4025 processor and integrated graphics are not designed for gaming. It is built for basic home office tasks like web browsing and document editing. You will not get smooth performance for modern games. Choose a system with a dedicated graphics card if you need to play titles.
What is the main difference between the N100 and Celeron models?
The HP 21.5-inch All-in-One with Intel N100 uses a more modern processor than the Celeron J4025. Both have 8GB of RAM and similar screen sizes. The N100 chip provides better efficiency and performance for daily office work. It is a practical choice if you need reliable speed for study tasks.
Can I upgrade the RAM on these all-in-one desktops?
Most all-in-one desktops have soldered RAM that cannot be upgraded. The HP models listed come with 8GB of RAM. The Apple iMac models also have 8GB. You should check the specific technical manual for your chosen unit. Buying enough memory upfront is usually necessary since internal upgrades are often impossible.
Does the BlairTech desktop run Windows?
No. The BlairTech 24-Inch desktop runs ChromeOS Flex. It is designed for web-based tasks and does not support Windows applications. You get a larger 24-inch screen and a Core i5 processor. It is a solid upgrade for users who do not need Windows compatibility and rely on browser-based tools.
Which alternative offers the most storage space?
The Apple 21.5-inch iMac with the Core i5 offers 1TB of HDD storage. This provides ample space for documents or photos. The HP ProOne and other Apple models offer 256GB SSDs. The HP Celeron model has 128GB or 288GB depending on the configuration. Choose the 1TB model if you need large capacity.
Is Windows 11 Pro available on these alternatives?
Yes. The HP ProOne 21.5-inch All-in-One PC includes Windows 11 Pro. It is ideal for business users who need advanced features. Other models like the HP Celeron and N100 versions typically run Windows 11 Home. The Apple units run macOS. Choose the ProOne if your work requires the Pro operating system.
How do the Apple iMacs compare to the HP models?
The Apple iMacs run macOS, while the HP models run Windows. The iMacs often feature Core i5 processors and larger storage options like 1TB HDDs. The HP Celeron and N100 models focus on basic performance and lower power consumption. Choose Apple for the macOS ecosystem and HP for Windows compatibility and modern connectivity.
What is the largest screen size available in this list?
The BlairTech 24-Inch Core i5 ChromeOS Flex Desktop has the largest screen at 24 inches. All other models listed feature a 21.5-inch display. The larger screen provides more workspace for web-based tasks. It is a solid upgrade for users who want extra display area without needing a separate monitor setup.