Apple

Apple MGPL3LL/A 2021 iMac M1 8-Core 24-inch Blue (Renewed)

4.7 (40 reviews)
1080pApple M1

Apple's M1 silicon delivers unified memory bandwidth that outpaces x86 competitors at this thermal envelope — renewed for the price-conscious builder.

$729.99*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 08, 2026.Price and availability are subject to change.

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Overview

The 2021 Apple iMac M1 (MGPL3LL/A) is a 24-inch all-in-one built around Apple's first-generation M1 chip — an 8-core CPU paired with an 8-core GPU and 8GB of unified memory on a single die. Unified memory means the CPU and GPU draw from the same high-bandwidth pool (68.25 GB/s) rather than transferring data across a PCIe bus, which translates to faster context switching between compute and graphics tasks at this thermal envelope. The 512GB NVMe SSD delivers sequential read throughput around 3.4 GB/s, making this renewed unit meaningfully faster than any SATA-based system regardless of processor. The 4.5K Retina display runs at 4480×2520 with a P3 wide color gamut and 500 nits brightness — a panel that would cost several hundred dollars standalone and ships calibrated.

This renewed configuration is built for professionals and creatives who want M1 silicon performance without the current-generation price premium. Software developers, photographers doing Lightroom editing, and knowledge workers running multiple productivity applications will find the M1's single-threaded and multi-threaded performance more than sufficient. The fixed hardware profile — non-upgradable RAM and SSD, integrated display — means this is a buy-once, configure-correctly system. The 8GB ceiling is the primary long-term constraint to evaluate honestly: if your workflows regularly involve large video files, many open browser tabs with heavy extensions, and background compilation, a 16GB configuration will age better. For everything else, the M1 iMac at renewed pricing represents a well-balanced workstation in a form factor that competes with nothing else on the market at this depth.

Key Features

Immersive 24-inch 4.5K Retina display with P3 wide color gamut and 500 nits of brightness

Apple M1 chip delivers powerful performance with 8-core CPU and 8-core GPU

Strikingly thin 11.5 mm design in vibrant colors

1080p FaceTime HD camera with M1 ISP for amazing video quality

Studio-quality three-mic array for crystal clear calls and voice recordings

Specifications

Display
24-inch 4.5K Retina, 4480 × 2520
Processor
Apple M1 — 8-core CPU
GPU
Apple M1 — 8-core GPU
Memory
8GB Unified Memory
Storage
512GB SSD
Color Gamut
P3 Wide Color
Display Brightness
500 nits
Camera
1080p FaceTime HD
Microphone
Studio-quality three-mic array
Operating System
macOS 11 (upgradeable)
Thickness
11.5 mm
Color
Blue
Condition
Renewed (Amazon Renewed Guarantee)

Pros & Cons

👍 Pros

  • Apple M1's 8-core CPU and 8-core GPU share a unified memory pool with 68.25 GB/s bandwidth — eliminating the PCIe bottleneck present in discrete GPU configurations at this price tier.
  • 512GB NVMe SSD delivers sequential read speeds around 3.4 GB/s, making large file operations and application launch times substantially faster than SATA-based alternatives.
  • 4.5K Retina display (4480×2520, 218 PPI) with P3 wide color gamut ships factory calibrated — usable for color-critical work without additional hardware.
  • 11.5mm depth and integrated design eliminates the desktop footprint of a separate tower, monitor, and cable management challenge.
  • Renewed pricing provides access to M1 silicon performance at a meaningful discount versus new market price.

👎 Cons

  • 8GB unified memory ceiling is non-upgradable and will show pressure under sustained 4K video editing timelines, large Lightroom catalogs, or parallel VM workloads.
  • 512GB SSD, while fast, fills quickly under active media production use — external storage becomes a day-one requirement for many workflows.
  • No user-serviceable components — RAM, SSD, and battery are not field-replaceable, making long-term repairability entirely dependent on Apple service.
  • Renewed units may ship with a non-standard keyboard or mouse configuration — verify accessory inclusion before purchase if you need matching peripherals.
  • 60Hz display refresh rate (no ProMotion) limits this panel to standard frame rates — not suitable as a high-refresh gaming display.

Frequently Asked Questions

Amazon Renewed means the unit has been inspected, tested, and certified to work like new by a qualified supplier. It comes with the Amazon Renewed Guarantee — a replacement or refund within 90 days if it doesn't perform as expected. The unit may show minor cosmetic wear but must be fully functional.
8GB in unified memory on M1 performs differently than 8GB of discrete RAM on an Intel system. The M1's memory controller runs at high bandwidth with direct CPU-GPU access, making 8GB genuinely usable for most productivity, creative, and development workloads. Heavy video editing at 4K or 3D rendering will approach the ceiling faster than on 16GB configurations.
No. Both are soldered to the M1 SoC on this generation. The 512GB SSD and 8GB unified memory are fixed at purchase — this is a critical pre-buy decision for long-term workload planning.
It ships with macOS 11 (Big Sur), but the M1 iMac supports macOS updates through current releases. You can update to Ventura, Sonoma, or later as Apple's support schedule allows.
The 4.5K Retina display with P3 wide color gamut ships factory calibrated for accurate color. For professional color-critical work (print prepress, broadcast), a hardware calibrator is still recommended, but out-of-the-box accuracy is notably better than most third-party displays at this price.