Core i5 or Core i3 All-In-One Desktops? Compared by Specs
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This Core i5 vs Core i3 all in one desktop comparison looks at two distinct machines. You get an Apple iMac with a 2.7GHz Core i5 and a Lenovo ThinkCentre with a 6-core Core i3-1315U. Both are all-in-one designs that save desk space. The main difference lies in the operating system and memory. The Apple unit runs macOS with 8GB of RAM, while the Lenovo uses Windows 11 Pro and includes 32GB of DDR5 memory. Each suits different workflows.
Key differences
| Aspect | Apple iMac 21.5-Inch Core i5 All-in-One | Lenovo ThinkCentre 24" Core i3 All-in-One |
|---|---|---|
| Processor | 2.7GHz Core i5 | Intel Core i3-1315U (6 cores, up to 4.5 GHz) |
| System Memory | 8GB | 32GB DDR5 |
| Storage | 256GB SSD | 1TB SSD |
| Operating System | MacOS 10.12 Sierra | Windows 11 Pro |
| Screen Size | 21.5in | 24in FHD IPS |
Which one should you choose?
Choose Apple iMac 21.5-Inch Core i5 All-in-One if
- You prefer the macOS ecosystem and Apple hardware.
- You need a compact 21.5-inch display for smaller desks.
- You are satisfied with 8GB of system memory for basic tasks.
Choose Lenovo ThinkCentre 24" Core i3 All-in-One if
- You require Windows 11 Pro for specific software compatibility.
- You need more RAM for multitasking or heavier applications.
- You want a larger 24-inch screen with higher storage capacity.
Verdict: The Apple iMac is the better choice if you are already invested in the Apple ecosystem and need a reliable machine for standard productivity tasks. The Lenovo ThinkCentre offers significantly more memory and storage, making it more suitable for users who need Windows compatibility or handle more demanding multitasking workloads.
i5 iMac vs i3 ThinkCentre Specs
processor performance
The Apple iMac uses a 2.7GHz Core i5, while the Lenovo ThinkCentre features a newer Intel Core i3-1315U. The i3-1315U is a 6-core, 8-thread processor with a base speed of 1.2 GHz and a max turbo frequency of 4.5 GHz. Modern architecture often allows newer i3 chips to outperform older i5 models in multi-threaded tasks. The iMac’s processor runs at a fixed 2.7GHz. You should consider that the Lenovo’s higher core count and turbo speeds may provide better performance for multitasking and modern applications compared to the older Apple chip.
system memory
Memory capacity is a major differentiator between these two machines. The Lenovo ThinkCentre comes equipped with 32GB of DDR5 RAM. This is a substantial amount of memory that supports heavy multitasking and running multiple applications simultaneously without slowdowns. In contrast, the Apple iMac includes only 8GB of system memory. While 8GB is sufficient for basic web browsing and light office work, it may struggle with demanding tasks. The Lenovo’s 32GB DDR5 offers significantly more headroom for future-proofing and professional workflows.
storage capacity
Both computers use solid-state drives for fast boot times and application loading. The Apple iMac provides 256GB of storage capacity. This is a modest amount that may fill up quickly if you store many photos, videos, or large files. The Lenovo ThinkCentre offers 1TB of SSD storage. This is four times the space available on the iMac. If you plan to keep a large library of media or documents locally, the Lenovo provides much more room. You will likely need external storage for the iMac sooner than for the Lenovo.
display size
Screen size affects your viewing experience and workspace visibility. The Apple iMac features a 21.5-inch display. This is a compact size suitable for smaller desks or users who prefer a focused view. The Lenovo ThinkCentre has a 24-inch display, which is larger and provides more screen real estate. The Lenovo screen is also specified as FHD (1920x1080) with an IPS panel, 99% sRGB color gamut, and a 100Hz refresh rate. The iMac’s resolution is not listed in the data. For most users, the larger Lenovo screen offers a more comfortable experience for work and media.
operating system
The software environment determines which applications you can run. The Apple iMac runs macOS 10.12 Sierra. This is an older version of Apple’s operating system. It may not support the latest versions of many modern apps or security updates. The Lenovo ThinkCentre runs Windows 11 Pro, 64-bit. This is a current, widely supported operating system with access to the largest library of software. If you need specific Windows applications or want the latest security features, the Lenovo is the better choice. The iMac’s older OS may limit its usability for new software.
Which All-in-One Desktop Suits You
Windows power users needing high RAM
The Lenovo ThinkCentre includes 32GB DDR5 RAM and a 1TB SSD. This configuration handles heavy multitasking and large files with ease. It runs Windows 11 Pro, offering broad software compatibility. The 24-inch FHD IPS display provides clear visuals for work and media. You get robust connectivity with USB-C and HDMI ports.
Mac ecosystem fans wanting simplicity
The Apple iMac runs macOS 10.12 Sierra, ideal for users already in the Apple ecosystem. It features a 2.7GHz Core i5 processor and 8GB of memory. The 21.5-inch screen offers a compact footprint for smaller desks. You get a streamlined experience with integrated hardware. This renewed model is inspected for quality and includes a 90-day warranty.
Budget-conscious buyers needing basic tasks
The iMac provides a reliable Core i5 processor for everyday computing tasks like web browsing and document editing. Its 256GB SSD offers fast boot times. The 8GB memory is sufficient for light multitasking. You get a compact 21.5-inch design that fits well in limited spaces. This option suits those who do not require advanced Windows features.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Apple iMac 21.5-Inch Core i5 All-in-One | Basic macOS desktop tasks | Check price of Apple iMac 21.5-Inch Core i5 All-in-One on Amazon |
| 2 | Lenovo ThinkCentre 24" Core i3 All-in-One | multitasking and clear visuals | Check price of Lenovo ThinkCentre 24" Core i3 All-in-One on Amazon |
The products compared
Apple iMac 21.5-Inch Core i5 All-in-One
Best for: Basic macOS desktop tasks
- Processor
- Core i5 (what this guide is about)
- 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 Affiliate link
This Apple iMac pairs a 2.7GHz Core i5 processor with 8GB of system memory and a 256GB solid-state drive. It runs macOS 10.12 Sierra on a 21.5-inch display. The unit weighs 12.5 pounds and includes a 90-day supplier-backed warranty. You get a compact all-in-one desktop suitable for everyday computing tasks and media consumption.
Pros
- 2.7GHz Core i5 processor
- 8GB system memory
- 256GB solid-state drive
- 21.5-inch display
Cons
- Only 8GB of system memory
- 256GB storage capacity
- Older macOS 10.12 Sierra operating system
Good fit if
- You want a compact all-in-one desktop
- You prefer macOS over Windows
- You need a reliable machine for basic tasks
Skip if
- You require high-end gaming performance
- You need extensive storage space
- You want the latest operating system
Verdict: Apple iMac 21.5in Core i5 offers a balanced spec set for users who value macOS and compact design over raw power or large storage.
Lenovo ThinkCentre 24" Core i3 All-in-One
Best for: multitasking and clear visuals
- Processor
- Core i3 (what this guide is about)
- 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 i3 All-in-One Affiliate link
This Lenovo ThinkCentre All-in-One pairs a 23.8-inch FHD IPS display with an Intel Core i3-1315U processor. It includes 32GB of DDR5 RAM and a 1TB SSD, running Windows 11 Pro. The 100Hz refresh rate and 99% sRGB color gamut offer clear visuals. It suits users who need reliable daily performance with ample memory for multitasking.
Pros
- Intel Core i3-1315U with up to 4.5 GHz turbo
- 32GB DDR5 system memory
- 100Hz refresh rate display
- 99% sRGB color coverage
- Windows 11 Pro included
Cons
- Non-touch screen
- 250 nits brightness
- No USB-C data transfer for external drives mentioned
Good fit if
- You need high RAM for heavy multitasking
- You prefer a 100Hz refresh rate
- You want Windows 11 Pro
Skip if
- You require a touchscreen
- You need high brightness for bright rooms
- You want a Core i5 processor
Verdict: Lenovo ThinkCentre 24-inch AIO delivers strong multitasking capability with 32GB of DDR5 RAM. It fits users who prioritize memory capacity and a smooth 100Hz display over touch functionality.
Specifications side by side
| Spec | Apple iMac 21.5-Inch Core i5 All-in-One | Lenovo ThinkCentre 24" Core i3 All-in-One |
|---|---|---|
| Processor | 2.7GHz Core i5 | Intel Core i3-1315U |
| System Memory | 8GB | 32GB DDR5 |
| Storage Capacity | 256GB Solid State Drive | 1TB SSD |
| Screen Size | 21.5in | 23.8" |
| Display Resolution | not stated | FHD (1920x1080) |
| Touchscreen | not stated | Non-Touch |
| Operating System | MacOS 10.12 Sierra | Windows 11 Pro |
| Memory | not stated | 32GB RAM |
| Storage | not stated | 1TB SSD |
| Dimensions | 27 × 11 × 24 inches | not stated |
| Weight | 12.5 pounds | not stated |
| Color | Silver | Luna Grey |
| Model | DDMD086_8M256D_R | ThinkCentre AIO |
Frequently asked questions
Is a Core i3 processor enough for everyday tasks?
Yes, for most daily activities. The Lenovo ThinkCentre uses a 6-core Core i3-1315U. This chip handles multitasking well. It pairs with 32GB of DDR5 RAM. You get smooth performance for web browsing and office work. The 100Hz display also adds visual clarity.
Which all-in-one offers better multitasking capability?
The Lenovo ThinkCentre is stronger for multitasking. It includes 32GB of DDR5 RAM. This large memory pool allows many apps to run at once. The Apple iMac has less stated memory. It is better for basic macOS tasks than heavy multi-window workflows.
Does the Apple iMac have a large screen?
No, it has a 21.5-inch display. The Lenovo ThinkCentre features a larger 24-inch screen. Both are all-in-one designs. The iMac is compact, measuring 27 inches wide. The ThinkCentre offers more screen real estate for productivity. You should choose based on your desk size and visual needs.
What operating system comes with the Lenovo model?
The Lenovo ThinkCentre runs Windows 11 Pro. This OS offers broad software compatibility. It is suitable for business or advanced user needs. The Apple iMac runs macOS. Your choice depends on whether you prefer the Windows ecosystem or Apple's software environment.
Is the Lenovo ThinkCentre suitable for large files?
Yes, it handles large files easily. It includes a 1TB SSD. This storage capacity provides ample space for data. The 32GB RAM also helps process large documents quickly. The Apple iMac is better for basic tasks. It lacks the same stated storage and memory specifications.
Which desktop is lighter and more compact?
The Apple iMac is lighter. It weighs 12.5 pounds. The Lenovo ThinkCentre weight is not listed. The iMac is 11 inches wide. It fits well in smaller spaces. You get a balanced spec set for users who value macOS and a compact design over raw power.
Does the Lenovo screen refresh at a high rate?
Yes, it supports a 100Hz refresh rate. This provides smoother visuals compared to standard 60Hz panels. The Apple iMac does not list a refresh rate. The Lenovo ThinkCentre prioritizes memory and display smoothness. You get clear visuals for general use and media consumption.