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Midnight Black 18 inch gaming laptop with thin profile

MSI

MSI Stealth A18 AI+ A3XWJG-006US 18" UHD+ 120Hz Mini LED Ryzen AI 9 HX 370 RTX 5090 64 GB 8

SKU CH-88E1-QAD6Z

An 18 inch UHD+ 120 Hz Mini LED gaming laptop with a 12 core Ryzen AI 9 HX 370 processor, RTX 5090 graphics with 24 GB GDDR7, 64 GB DDR5 memory and an 8 TB NVMe SSD

  • Screen size18.0 in (45.7 cm)
  • ProcessorAMD Ryzen AI 300 Series
  • Graphics processorNVIDIA GeForce RTX 5090 Laptop GPU
  • Memory size64 GB
  • Storage drive8 TB M.2 PCIe 4.0 x4 NVMe SSD
  • Display resolution3840 × 2400

CPU Name AMD Ryzen AI 9 HX 370

Size 18.0"

Operating System Windows 11 Pro

GPU NVIDIA GeForce RTX 5090 Laptop GPU

Memory 64GB

SSD 8 TB

  • 18-inch UHD+ Mini LED display at 120 Hz for sharp, fluid visuals
  • Ryzen AI 9 HX 370 12-core processor up to 5.1 GHz turbo for heavy workloads
  • RTX 5090 laptop GPU with 24 GB GDDR7 for top-tier graphics performance
  • 64 GB DDR5 5600 dual-channel memory for smooth multitasking
  • 8 TB PCIe 4.0 NVMe SSD for massive, fast storage

18-inch UHD+ Mini LED laptop

The MSI Stealth A18 AI+ A3XWJG-006US is an 18-inch gaming laptop built around a 12-core AMD Ryzen AI 9 HX 370 processor and an NVIDIA GeForce RTX 5090 Laptop GPU with 24 GB GDDR7 video memory. It ships with 64 GB of DDR5 5600 MHz memory in dual-channel configuration and an 8 TB PCIe 4.0 x4 NVMe SSD. The system runs Windows 11 Pro and is finished in Midnight Black.

RTX 5090 with 24 GB GDDR7

The single specification that decides fit is the graphics subsystem: an NVIDIA GeForce RTX 5090 Laptop GPU equipped with 24 GB of GDDR7 memory. That video-memory capacity and the GPU architecture determine whether the machine can handle the target rendering, simulation or training workloads without offloading to system RAM.

Gelid GC Extreme thermal compound

HIDevolution applies Gelid GC Extreme thermal interface material to both the CPU and GPU during assembly. This upgrade is intended to lower sustained core temperatures and reduce the likelihood of thermal throttling during extended compute or graphics loads, helping the hardware maintain higher clock rates over long sessions.

How it compares

Measured against everything we stock in Gaming Laptop Computers, at today’s prices. Recalculated every night.

Price $5,512.99
Pricier than about 91% of the 5,382 comparable items (median $1,978.99).
Screen size 18.0 in (45.7 cm)
Higher than about 90% of the 5,361 comparable items (median 16 in).
Refresh frequency 120 Hz
Lower than about 90% of the 2,443 comparable items (median 165 Hz).

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Specifications

Product
Brand nameMSI
Product lineMSI Stealth A18 AI+
Model nameStealth A18 AI+ A3XWJG-006US
Part numberMS-STEALTHA18AI3006-HID3P
Product colorMidnight Black
Design styleStandard
Product typeGaming
Recommended useConsumer
Processor
ProcessorAMD Ryzen AI 9 HX 370
Processor modelAMD Ryzen AI 9 HX 370
CPU cores12-core Processor
Turbo clock speed5.1 GHz
L3 cache size36 MB
Memory
Memory size64 GB
RAM type and speed5600 MHz (Speeds subject to system capability)
Memory configuration2 × 32 GB
Maximum supported memory128 GB
Storage
Storage drive8 TB M.2 PCIe 4.0 x4 NVMe SSD
SSD storage8 TB
Hard driveNo
Storage configuration8 TB M.2 PCIe 4.0 x4 NVMe SSD
Display
Screen size18.0 in (45.7 cm)
Display resolution3840 × 2400
Refresh frequency120 Hz
Touch inputNon-Touch Screen
Display18 in UHD+ 120 Hz
Display formatUHD+
Screen featuresMini LED HDR
Graphics
Graphics processorNVIDIA GeForce RTX 5090 Laptop GPU
Video RAM24 GB
GPU modelNVIDIA® GeForce RTX™ 5090 Laptop GPU
Audio & video
Web cameraIR FHD w/shutter
Connectivity
NetworkingLAN and WLAN
LAN connection2.5GbE Lan
Wi-Fi802.11 be Wi-Fi 7
Bluetooth supportBT 5.4
Ports & slots
USB ports2x Type-A USB3.2 Gen2
Thunderbolt ports2x Type-C (USB4® / DisplayPort™/ Power Delivery 3.1/ Thunderbolt™ 4 compatible)
HDMI ports1x HDMI™ 2.1 (8K @ 60 Hz / 4K @ 120 Hz)
Audio jacks1x Mic-in/Headphone-out Combo Jack
Memory card readerSD Express Card Reader
Power
Power adapter280 W
Battery pack4 cell (90Whr) Li-Ion
Size & build
Overall dimensions15.74 in × 11.41 in × 0.94 in
Product weight6.39 lb (2.9 kg)
Software
Operating systemWindows 11 Pro
More details
Pointing deviceMulti Touch
KeyboardSteelSeries per-Key RGB with Anti-Ghost key (99 Key)

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Questions about this item

How does the 5.1 GHz max turbo on the Ryzen AI 9 HX 370 behave under sustained load in this chassis?

The 12-core processor reaches 5.1 GHz max turbo, and Gelid GC Extreme thermal compound on CPU and GPU helps maintain lower temperatures to reduce throttling during extended heavy workloads.

What does the PCIe 4.0 x4 NVMe interface mean for the 8 TB SSD in daily use?

The drive runs on a PCIe 4.0 x4 NVMe link, delivering fast sequential read and write speeds that cut boot time and level-load waits for large game libraries and creative projects.

Will the 18-inch UHD+ 120 Hz Mini LED panel fit in a standard 18-inch laptop sleeve?

The chassis measures 15.74 x 11.41 x 0.94 inches and weighs 6.39 lbs, so verify your sleeve’s internal dimensions exceed those figures for a proper fit.

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