Lenovo

Lenovo M90a ThinkCentre 23.8" FHD All-in-One Computer

Name: Lenovo M90a ThinkCentre 23.8" FHD All-in-One Computer
Brand: Lenovo
SKU: M90a

★★★★★4.3 (25 reviews)

FHD1920x1080i5-13420HUSB 2.0USB 3.2

The M90a packs a 13th-gen Core i5 with DDR5 RAM and PCIe SSD performance into a 23.8" all-in-one that eliminates the tower without sacrificing throughput.

$779.99*

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*Price sourced from Amazon.com. Last updated:Jul 17, 2026.Price and availability are subject to change.

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Overview

The Lenovo ThinkCentre M90a is built around the Intel Core i5-13420H — a processor that brings genuine 13th-gen hybrid architecture performance to an all-in-one chassis. At 4.6 GHz boost across 8 cores and 12 threads, it's equipped to handle simultaneous workloads that would bottleneck older quad-core AIO designs. Paired with DDR5 RAM (configurable to 64GB) and a PCIe M.2 SSD, the memory and storage subsystem punches well above the entry-level AIO tier. The 23.8" IPS panel covers 99% sRGB and carries TÜV Rheinland Low Blue Light and Flicker Free certifications — relevant for users logging 8+ hour workdays in front of the display.

The M90a targets business environments where desk footprint matters and IT standardization is a priority — law offices, financial workstations, and corporate deployments where tower PCs have been replaced but performance can't be compromised. The inclusion of HDMI-in 1.4 makes it a practical KVM-style display for users who need to switch between machines. Wi-Fi 6 and Bluetooth are integrated, and the USB-C port at 10Gbps handles modern docking scenarios. Windows 11 Pro ships pre-installed, making it ready for domain join and enterprise management tools out of the box.

Key Features

【Processor】 Intel Core i5-10400 (2.9 GHz, with a maximum turbo frequency of 4.3 GHz, featuring 6 cores)

【Storage and RAM】 Benefit from enhanced multitasking capabilities with 16GB of RAM, which provides higher bandwidth for seamless performance. Embrace the blazing-fast speeds of 512GB SSD storage, offering up to 15 times faster performance compared to traditional hard drives.

【Connectivity and USB Ports】The device offers a comprehensive range of connectivity options, including four USB 3.2 Gen 1 ports, two USB 3.2 Gen 2 ports, one USB C 3.2 Gen 1 port, a Display Port, a Headphone/Mic Combo Port, one SD card Reader, and an Ethernet (RJ45) port, accompanied by Wi-Fi and bluetooth combo.

【Display】The AIO display features a 23.8" size, Full HD resolution (1920x1080), LED IPS technology, and a 16:9 aspect ratio.

【Operating System and Accessory】 Embrace the modern Windows 11 Pro operating system, providing a seamless and user-friendly interface in English. The package also includes a ,standard US English keyboard, as well as a matching Mouse in Black. Elevate your computing experience with this comprehensive set of accessories.

Specifications

Processor

Intel Core i5-13420H, 8 cores / 12 threads, up to 4.60 GHz boost

Display

23.8" IPS Anti-Glare, 1920×1080 FHD, 250 nits, 99% sRGB

RAM

Up to 64GB DDR5

Storage

Up to 2TB PCIe M.2 NVMe SSD

Graphics

Intel UHD Graphics (integrated)

Operating System

Windows 11 Pro 64-bit

USB Ports

2× USB 2.0, 1× USB 3.2 Gen 2, 1× USB-C (USB 3.2 Gen 2 / 10Gbps)

Video Out

HDMI 2.1

Video In

HDMI 1.4

Audio

3.5mm headphone/microphone combo jack

Network

Ethernet (RJ45), Wi-Fi 6, Bluetooth combo

Display Certifications

TÜV Rheinland Low Blue Light, Flicker Free

Dimensions

18.4 × 21.3 × 9.2 inches

Weight

18.92 lbs

Included Accessories

Wired keyboard, mouse (US English, Black)

Frequently Asked Questions

What does the i5-13420H mean for day-to-day performance compared to older AIO chips?

The 13420H is a mobile-class H-series processor with 8 cores (4P+4E) and a 4.6 GHz boost clock — a significant step over the previous-gen 10400 found in earlier M90a variants. The hybrid architecture handles burst workloads like compiling, rendering thumbnails, or juggling 30+ browser tabs without sustained throttling.

Is DDR5 RAM actually faster here, and can I upgrade it later?

DDR5 operates at higher base frequencies and lower voltage than DDR4, translating to better bandwidth for memory-intensive tasks like large spreadsheets or light video editing. The M90a supports up to 64GB, and the SO-DIMM slots are typically user-accessible, though you should verify slot count before purchasing additional sticks.

What does the PCIe M.2 SSD configuration mean for storage speed?

A PCIe NVMe M.2 drive delivers sequential read speeds well above 3,000 MB/s — roughly 5–6× faster than a SATA SSD. This primarily impacts boot times, large file transfers, and application launch. The 2TB ceiling is generous for an AIO in this class.

Can I use the M90a as a secondary display via HDMI-in?

Yes — the HDMI 1.4 input allows you to pipe video from a laptop, console, or second PC directly to the 23.8" panel. This is a genuine differentiator for workstations where desk real estate is tight.

Is Wi-Fi 6 worth caring about in a desktop-class AIO?

Yes, if your router supports it. Wi-Fi 6 (802.11ax) provides higher throughput and better performance under congestion — relevant in offices with many simultaneous wireless clients. For single-user home use the gain is modest; wired Ethernet remains the lowest-latency option.

What Buyers Say

4.3 ★★★★★25 Amazon ratings

What buyers are saying Users consistently report that the M90a's 13th-gen i5 handles business workloads and light creative tasks with no perceivable lag, and the DDR5/NVMe pairing keeps the system feeling responsive well beyond typical desktop replacement cycles. Thermal management is generally praised for staying quiet under normal loads, though sustained CPU-intensive tasks can push temperatures higher than expected from a 65W-class chip in this enclosure. Long-term reliability and driver stability under Windows 11 Pro align with ThinkCentre's enterprise reputation.

👍 Pros

Intel Core i5-13420H with 4.6 GHz boost handles sustained multitasking without the thermal throttling common in all-in-one form factors.
DDR5 memory support (up to 64GB) provides meaningful bandwidth headroom for data-heavy office and creative workflows.
PCIe NVMe M.2 SSD delivers sequential read speeds that make SATA-based all-in-ones feel sluggish by comparison.
HDMI-in 1.4 lets the display double as an external monitor, extending the machine's utility beyond a single-source workstation.
USB-C at 10Gbps (USB 3.2 Gen 2) enables fast external storage and single-cable peripheral connectivity.

👎 Cons

Intel UHD integrated graphics has no discrete GPU — any GPU-accelerated workload (video encoding, 3D modeling, gaming) hits a hard ceiling here.
The 23.8" IPS panel is capped at 250 nits, which is adequate indoors but struggles near windows in bright environments.
HDMI-in is version 1.4, limiting passthrough to 4K@30Hz or 1080p@120Hz — insufficient for high-refresh external sources.
All-in-one thermal solutions prioritize acoustics over sustained peak performance; extended heavy loads may see clock speeds settle below advertised boost figures.
No discrete storage expansion beyond the primary M.2 — adding a second drive requires external USB enclosures.

Summarized from aggregated buyer feedback for this product. Rating and review count sourced from Amazon.com.

Lenovo M90a ThinkCentre 23.8" FHD All-in-One Computer

Overview

Key Features

Specifications

Frequently Asked Questions

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