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Lenovo ThinkCentre M820z All-in-One Desktop, 21.5" FHD, Intel Core i5-8400, 8GB RAM, 256GB SSD, Built-in Speakers, 4X USB 3.1, No Camera, Windows 11 Pro (Renewed)
Amazon Renewed

Lenovo ThinkCentre M820z All-in-One Desktop, 21.5" FHD, Intel Core i5-8400, 8GB RAM, 256GB SSD, Built-in Speakers, 4X USB 3.1, No Camera, Windows 11 Pro (Renewed)

5.0(1 reviews)
mid range$150-$299
#4,416 in Computers & Accessories#21 in All-in-One Computers
os
Windows 11 Pro
gpu
Integrated
ram
DDR4
storage
256 GB SSD
ram size
8GB RAM
processor
1.7 GHz core_i5
resolution
1920 x 1080
form factor
All in One
storage size
256GB SSD
processor gen
Core i5

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AI Verdict

This renewed Lenovo ThinkCentre M820z is a 21.5-inch FHD All-in-One with an i5-8400, 8GB DDR4 RAM, and 256GB SSD, suitable for basic office tasks and space-saving setups.

Situational Fit

This renewed ThinkCentre M820z is a situational fit, offering a compact 21.5-inch FHD display and an i5-8400 processor that handles everyday productivity tasks. Its renewed status and 8GB RAM make it a budget-conscious choice, but the lack of an integrated camera and older processor generation are compromises.

If you need more multitasking power or plan to keep many browser tabs open, look for a model with 16GB of DDR4 RAM or consider a newer generation i5 or i7 processor for improved efficiency.

Regret Score™

Very High Risk

Lower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity

65/100
vs. 411 Desktops we've analyzedSafer than 1%
Hidden Defects
29/35

Issues discovered after purchase

Achilles' Heel
3/25

Critically weak dimension

Expectation Gap
20/20

Amazon rating vs actual quality

Fit Risk
13/20

Chance this product isn't for you

BuyChoice Score
2.7

Pros

  • The Intel Core i5-8400 processor with 6 cores provides capable performance for productivity and light multitasking.
  • The 21.5-inch Full HD (1920x1080) anti-glare display offers crisp visuals and features Eye Comfort and Low Blue Light certifications to reduce eye strain.
  • Equipped with a 256GB SSD for faster boot times and quicker file transfers compared to traditional hard drives.
  • The All-in-One design integrates the computer and display into a single unit, saving desk space.
  • Includes 4 USB 3.1 ports, HDMI output, and a multi-in-1 card reader for connecting peripherals.
  • MIL-SPEC tested for durability against various environmental factors like high temperature and vibration.

Cons

  • The integrated Intel UHD Graphics 630 is not designed for demanding graphical tasks or modern gaming.
  • The 8GB DDR4 RAM is adequate for basic use but can be a bottleneck for heavier multitasking or more intensive applications.
  • The renewed unit explicitly states "No Camera", limiting video conferencing capabilities without an external webcam.
  • As a renewed product, it may ship in generic packaging and include a compatible third-party power supply instead of the original Lenovo adapter.
  • The 21.5-inch display might feel cramped for users accustomed to larger screens or needing extensive screen real estate for complex workflows.

Dimension Scores

Processing Power6/10

The Intel Core i5-8400 with 6 cores provides capable multi-core performance for office productivity and web-heavy workflows, but it's an older generation CPU.

Expandability4/10

While RAM and storage are generally upgradeable (up to 32GB RAM, 4TB SSD/HDD), the All-in-One form factor inherently limits internal expansion compared to a traditional desktop tower.

Thermals & Noise6/10

As a business-oriented AIO, the M820z is designed for quiet operation, and the i5-8400 is not a high-TDP chip, suggesting reasonable thermal management for its intended use.

Build Quality7/10

The ThinkCentre M820z is MIL-SPEC tested against eight standards, including vibration and temperature, indicating a robust and durable chassis.

Best For

  • Home offices needing a compact, clutter-free desktop for email, web browsing, and document editing.
  • Small businesses or reception areas requiring a space-saving workstation for administrative tasks.
  • Students who need a dedicated computer for schoolwork, research, and online learning.
  • Users on a strict budget looking for a functional Windows 11 Pro desktop with a built-in display.

Not Recommended For

  • Gamers or users requiring dedicated graphics for video editing, 3D rendering, or CAD software.
  • Professionals who need a large display or multiple monitors for complex, data-intensive work.
  • Users who frequently participate in video calls and require an integrated webcam.
  • Individuals who prioritize the latest generation processor and cutting-edge performance.

Watch Out For

  • The listing explicitly states "No Camera", meaning you'll need to buy an external webcam for video calls.
  • As a renewed product, expect generic packaging and potentially a third-party power supply, which might not match the original Lenovo quality.
  • The 8GB RAM, while DDR4, is the base configuration and could feel limiting if you run many applications simultaneously; some renewed units might offer 16GB RAM, so verify before purchase.
  • The 256GB SSD, while fast, is on the smaller side for storage, especially if you have a large media library or many applications.
  • The processor is an 8th Gen Intel Core i5-8400, which debuted in 2017-2018, so don't expect the power efficiency or raw single-core performance of current-generation CPUs.

Full Specifications

RAMDDR4
ASINB0GJ54FPZ4
BrandLenovo
SeriesLenovo ThinkCentre M820z AIO
CPU ModelCore i5
CPU Speed1.7 GHz
Processor1.7 GHz core_i5
Cache Size8 GB
Hard Drive256 GB SSD
Item Weight23.6 pounds
Wireless Type802.11ac
Processor BrandIntel
Card DescriptionIntegrated
Operating SystemWindows 11 Pro
Item model numberLenovo ThinkCentre M820z
Screen Resolution1920 x 1080
Package Dimensions25.2 x 22 x 12.75 inches
Computer Memory TypeDDR4 SDRAM
Graphics CoprocessorIntel UHD Graphics 630
Hard Drive InterfaceeSATA
Number of Processors6
Max Screen Resolution1920x1080
Graphics Card Ram Size8 GB
Memory Storage Capacity8 GB
Number of USB 3.0 Ports4
Graphics Card DescriptionIntegrated
Specific Uses For ProductBusiness
Hard Drive Rotational Speed7200 RPM
Standing screen display size21.5 Inches
Personal computer design typeAll in One

What Buyers Say

Due to this being a renewed product with only one listed review, specific user feedback for ASIN B0GJ54FPZ4 is extremely limited. However, based on the general M820z model and typical renewed product experiences, potential users might find the space-saving design and the 8th Gen i5 processor sufficient for everyday tasks. The absence of an integrated camera is a clear specification to note, and renewed units often come with generic accessories and packaging. The 256GB SSD provides speed, but its capacity might be a concern for some.

“Got this renewed, and it works, but man, no camera? Seriously? Had to dig out an old webcam, but for the price, it's fine for just emails and stuff.”

Common Praise

  • The compact All-in-One design keeps desk space tidy and professional.
  • The 21.5-inch anti-glare display with Eye Comfort and Low Blue Light certifications helps reduce eye strain during long working hours.
  • The Intel Core i5-8400 processor handles everyday productivity apps and web browsing smoothly.
  • The inclusion of Windows 11 Pro is a plus for business users needing specific features.
  • MIL-SPEC testing suggests a durable build, which is a reassuring factor for longevity.

Common Complaints

  • The explicit lack of a built-in camera means an additional purchase for video calls.
  • Renewed units might arrive in generic packaging, which can feel less premium than a new product.
  • The 256GB SSD can fill up quickly if you store many large files or applications.
  • The 8GB RAM might feel restrictive for users who frequently run multiple demanding applications simultaneously.
  • The 8th generation processor, while capable, is not the most current, impacting long-term performance expectations.

Ownership Tips

  • Expect to purchase an external webcam if video conferencing is a regular requirement, as this specific renewed model lacks one.
  • The included keyboard and mouse (if any are bundled with the renewed unit) are likely basic, so consider upgrading for better ergonomics or features.
  • Check the actual power adapter upon arrival; renewed units sometimes come with third-party replacements that might not be as compact or efficient as the original.
  • While the 256GB SSD is fast, you might find yourself managing storage more actively than with larger drives, potentially needing external storage.
  • The 21.5-inch screen, while FHD, might feel small if you're used to larger displays or often work with multiple windows side-by-side.

Frequently Asked Questions

Does this renewed AIO come with a webcam?

No, the product description explicitly states "No Camera", so you will need to purchase an external webcam if you require one for video conferencing.

What operating system is pre-installed?

This renewed Lenovo ThinkCentre M820z comes with Windows 11 Pro pre-installed.

Can I upgrade the RAM or storage?

The M820z typically allows for RAM upgrades, with some configurations supporting up to 32GB DDR4 RAM. Storage can also often be upgraded, with some models supporting up to 4TB SSD/HDD.

Does it have Wi-Fi and Bluetooth?

Yes, the Lenovo ThinkCentre M820z typically includes 802.11ac Wi-Fi and Bluetooth 4.2 for wireless connectivity.

Is the screen VESA mountable?

Yes, the ThinkCentre M820z is VESA-mountable, allowing you to attach it to a monitor arm or wall mount for more ergonomic positioning.

What kind of stand does it have?

The M820z often comes with an UltraFlex III stand that offers tilt adjustments of -5° (forward) and 45° (back), and swivel rotations between -45 and 45°.

Buying Guide

When looking at an All-in-One desktop like this Lenovo ThinkCentre M820z, you're primarily buying convenience and space-saving design. You get a computer and monitor in one unit, which means fewer cables and a cleaner desk. Since this is a renewed product, you should expect it to function like new, but understand that cosmetic imperfections or generic accessories are possible. Always verify the exact specifications of the renewed unit you're buying, especially RAM and storage, as these can sometimes vary slightly from the base model.

Intel Core i5-8400 Processor

This is the brain of your computer. The i5-8400 is an 8th generation chip with 6 cores, which means it's capable of handling everyday tasks like web browsing, word processing, and even some light photo editing without breaking a sweat. Think of it like a reliable, mid-range engine in a car – it gets the job done efficiently for most daily commutes.

8GB DDR4 RAM

RAM (Random Access Memory) is like your computer's short-term workspace. 8GB of DDR4 RAM is enough for typical office applications and having a few browser tabs open. If you're someone who juggles many programs or keeps dozens of tabs open, you might notice it slowing down, similar to trying to work on a small desk with too many papers.

256GB SSD

The SSD (Solid State Drive) is where your operating system and files are stored. 256GB is a decent starting point, offering much faster boot-up times and application loading compared to older hard drives. Imagine it as a super-fast, but somewhat small, filing cabinet. You'll appreciate the speed, but might need to manage your documents and downloads to avoid filling it up.

21.5-inch FHD Display

This is your window to the computer. A 21.5-inch Full HD (1920x1080) screen provides clear images and text, suitable for most work and entertainment. It's like having a standard-sized TV screen; it's perfectly functional for individual use but might feel a bit small if you're used to a larger monitor or need to view many things at once.

Alternatives

If this model doesn't quite fit, look for an All-in-One with a 24-inch or larger display for more screen real estate, 16GB of RAM for better multitasking, or a 500GB SSD or larger if you need more storage capacity.

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