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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsThe main downsides of an iMac all-in-one are that you must choose its memory and internal storage up front, its ports and external-display support depend on the configuration, and the computer and screen are bundled together. Repair options are model-specific, too. Apple’s current reference point is its 24-inch M4 iMac, but configurations differ, so check the exact model before buying.
1. You cannot upgrade memory later
For 24-inch iMac models released in 2021 or later, memory is integrated into the Apple silicon chip package. Apple Support says it “can’t be upgraded.” That makes memory a purchase-time choice: consider the applications and workloads you expect to use throughout the computer’s useful life, not just what you run today. Do not assume this limitation applies to older iMacs without checking their specifications.
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2. Internal storage is limited to the configuration you choose
Apple’s published configurations for the current 24-inch iMac reach up to 2TB SSD. If your photo library, video files, projects, or other data may outgrow the capacity you select, plan for that before purchase. Apple’s iMac specifications describe the available configurations.
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Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →An external drive can add storage, and Apple documents connecting storage devices as well as using Time Machine for automatic backups. But an external drive is an additional device and cable, not an upgrade to the iMac’s built-in SSD. Factor in where it will sit and how you will manage backups. Apple’s guide to connecting storage devices and Time Machine backup instructions explain those options.
#1 Best Overall
- BRILLLLLLIANT — iMac is the ultimate all-in-one desktop computer, powered by the M4 chip and built for Apple Intelligence.* With a stunning 24-inch Retina display, iMac gives you the space you need in an iconic, colorful design that livens up any room.
- FITS PERFECTLY IN YOUR SPACE — The all-in-one desktop design is strikingly thin, comes in seven vibrant colors, and elevates any space with style.
- BUILT FOR APPLE INTELLIGENCE — Apple Intelligence is the personal intelligence system that helps you write, express yourself, and get things done effortlessly. With groundbreaking privacy protections, it gives you peace of mind that no one else can access your data — not even Apple.*
- SUPERCHARGED BY M4 — Get more done faster with the Apple M4 chip. From editing photos to creating presentations to gaming, you’ll fly through work and play.
- IMMERSIVE DISPLAY — The industry-leading 24-inch 4.5K Retina display features 500 nits of brightness and supports up to 1 billion colors.*
3. Port count and display expansion vary by configuration
Apple lists two- and four-port iMac configurations. Both use Thunderbolt/USB-C connections, but the number of ports and supported external displays differ. A connector mismatch can also mean you need an adapter: Apple advises checking whether an adapter is required for your device and Mac port.
| Configuration | External display support |
|---|---|
| Two-port iMac | One external display up to 6K at 60Hz |
| Four-port iMac | Two displays up to 6K at 60Hz each, or one display up to 8K at 60Hz |
These are the capabilities Apple lists for the configurations; check the exact model’s requirements before planning a multi-display setup. Apple’s specifications list ports and display support, while Apple’s adapter guidance covers connecting devices with different connectors.
Before choosing a configuration, inventory the equipment you already use, such as USB-A accessories, card readers, wired networking adapters, and external displays. If your devices outnumber the available ports, you may need a compatible hub or dock; compatibility and performance depend on the device and iMac configuration.
Rank #2
- BRILLLLLLIANT — iMac is the ultimate all-in-one desktop computer, powered by the M4 chip and built for Apple Intelligence.* With a stunning 24-inch Retina display, iMac gives you the space you need in an iconic, colorful design that livens up any room.
- FITS PERFECTLY IN YOUR SPACE — The all-in-one desktop design is strikingly thin, comes in seven vibrant colors, and elevates any space with style.
- BUILT FOR APPLE INTELLIGENCE — Apple Intelligence is the personal intelligence system that helps you write, express yourself, and get things done effortlessly. With groundbreaking privacy protections, it gives you peace of mind that no one else can access your data — not even Apple.*
- SUPERCHARGED BY M4 — Get more done faster with the Apple M4 chip. From editing photos to creating presentations to gaming, you’ll fly through work and play.
- IMMERSIVE DISPLAY — The industry-leading 24-inch 4.5K Retina display features 500 nits of brightness and supports up to 1 billion colors.*
4. The display comes with the computer
An iMac combines its screen and computer in one purchase. That integrated design can make sense if you want a single desktop system, but it offers less flexibility if you already own a suitable monitor or prefer to replace the computer and display independently. A modular desktop lets you treat those components as separate choices; this is a flexibility trade-off, not a claim about which setup costs less.
The iMac’s external-display support can extend the workspace, but it does not change the fact that the built-in screen is part of the system you are buying. Check the supported display count and resolution for your configuration if you expect to use additional screens.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.5. Repair and parts support depend on the exact model
Apple publishes repair procedures for selected recent iMac configurations, including procedures involving the display and logic board. It also lists parts support for selected components of the 2024 24-inch iMac. These resources show that repair documentation and parts pathways exist for specific models; they do not establish that a repair is simple, inexpensive, or available in every location.
Rank #3
- BRILLLLLLIANT — iMac is the ultimate all-in-one desktop computer, powered by the M4 chip and built for Apple Intelligence.* With a stunning 24-inch Retina display, iMac gives you the space you need in an iconic, colorful design that livens up any room.
- FITS PERFECTLY IN YOUR SPACE — The all-in-one desktop design is strikingly thin, comes in seven vibrant colors, and elevates any space with style.
- BUILT FOR APPLE INTELLIGENCE — Apple Intelligence is the personal intelligence system that helps you write, express yourself, and get things done effortlessly. With groundbreaking privacy protections, it gives you peace of mind that no one else can access your data — not even Apple.*
- SUPERCHARGED BY M4 — Get more done faster with the Apple M4 chip. From editing photos to creating presentations to gaming, you’ll fly through work and play.
- IMMERSIVE DISPLAY — The industry-leading 24-inch 4.5K Retina display features 500 nits of brightness and supports up to 1 billion colors.*
Before buying, check the repair manual and parts information for the exact model you are considering, then confirm local service options and part availability. Apple’s repair manual for the 2024 four-port iMac and parts support information for selected 2024 iMac components illustrate why repair planning should be model-specific.
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When an iMac’s trade-offs matter most
The downsides are most relevant if you need more memory or storage over time, rely on a large number of wired peripherals, already have a monitor you want to keep, or need a specific repair route. Compare a candidate iMac with a modular desktop by looking at the memory and SSD capacity at purchase, port types and count, external-display support, whether you can reuse a monitor, and model-specific service and parts availability. Include any adapters and external storage you would actually need; available evidence does not establish a fair price comparison across configurations and vendors.
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