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Midnight Black 18 inch gaming laptop closed lid matte finish

MSI

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

SKU CH-XPXS-V3YKK

An 18-inch UHD+ 120Hz 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 a 2 TB PCIe 4.0 NVMe SSD

  • ColorMidnight Black
  • Operating SystemWindows 11 Home
  • CPUAMD Ryzen AI 9 HX 370
  • Screen18" UHD+ 120Hz
  • Memory64GB
  • Storage2 TB M.2 PCIe 4.0 x4 NVMe SSD

CPU Name AMD Ryzen AI 9 HX 370

Size|OS|GPU|Memory|SSD|Option

  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|32GB|16 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|32GB|2 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|32GB|4 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|32GB|8 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|64GB|16 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|64GB|2 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|64GB|4 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|64GB|8 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|96GB|16 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|96GB|2 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|96GB|4 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 4070TI Laptop GPU|96GB|8 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|32GB|16 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|32GB|2 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|32GB|4 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|32GB|8 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|64GB|16 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|64GB|2 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|64GB|4 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|64GB|8 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|96GB|16 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|96GB|2 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|96GB|4 TB|QHD+
  • 16.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|96GB|8 TB|QHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5080 Laptop GPU|64GB|2 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5080 Laptop GPU|64GB|4 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5080 Laptop GPU|64GB|8 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5080 Laptop GPU|96GB|2 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5080 Laptop GPU|96GB|4 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5080 Laptop GPU|96GB|8 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5090 Laptop GPU|64GB|2 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5090 Laptop GPU|64GB|4 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5090 Laptop GPU|64GB|8 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5090 Laptop GPU|96GB|2 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5090 Laptop GPU|96GB|4 TB|UHD+
  • 18.0"|Windows 11 Home|NVIDIA GeForce RTX 5090 Laptop GPU|96GB|8 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|64GB|2 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|64GB|4 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|64GB|8 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|96GB|2 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|96GB|4 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5080 Laptop GPU|96GB|8 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5090 Laptop GPU|64GB|2 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5090 Laptop GPU|64GB|4 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5090 Laptop GPU|64GB|8 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5090 Laptop GPU|96GB|2 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5090 Laptop GPU|96GB|4 TB|UHD+
  • 18.0"|Windows 11 Pro|NVIDIA GeForce RTX 5090 Laptop GPU|96GB|8 TB|UHD+

Struck-through versions exist but are not stocked here.

  • 12-core Ryzen AI 9 HX 370 reaches 5.1 GHz turbo for heavy multitasking
  • RTX 5090 with 24 GB GDDR7 drives 4K gaming and AI workloads
  • 18-inch UHD+ Mini LED at 120 Hz delivers sharp motion and deep contrast
  • 64 GB DDR5 5600 dual-channel memory handles large datasets without swapping
  • 2 TB PCIe 4.0 NVMe SSD cuts boot and load times for games and apps

18-inch UHD+ Mini LED gaming laptop

The MSI Stealth A18 AI+ A3XWJG-006US pairs an 18-inch UHD+ 120Hz Mini LED panel with an AMD Ryzen AI 9 HX 370 12-core processor and NVIDIA RTX 5090 laptop GPU equipped with 24 GB GDDR7 memory. The configuration targets creators and gamers who need a large high-resolution workspace and desktop-class graphics performance in a portable chassis.

Sustained load behaviour with Gelid GC Extreme

HIDevolution applies Gelid GC Extreme thermal interface material to both the CPU and GPU during assembly to improve heat transfer away from the dies. The upgrade is intended to keep temperatures lower during extended rendering or gaming sessions, reducing the likelihood of thermal throttling when the 12-core processor runs at its 5.1 GHz max turbo frequency alongside the RTX 5090 under continuous load.

Build quality and daily connectivity

The Midnight Black chassis measures 15.74 by 11.41 by 0.94 inches and weighs 6.39 lbs, providing a rigid platform for the 18-inch display and internal component layout. A 2 TB M.2 PCIe 4.0 x4 NVMe SSD and 64 GB of DDR5 5600 MHz memory in dual-channel configuration deliver fast boot times and ample bandwidth for multitasking, while integrated LAN and WLAN handle wired and wireless networking without additional adapters.

Highlights

  • 12-core Ryzen AI 9 HX 370 reaches 5.1 GHz turbo for heavy multitasking
  • RTX 5090 with 24 GB GDDR7 drives 4K gaming and AI workloads
  • 18-inch UHD+ Mini LED at 120 Hz delivers sharp motion and deep contrast
  • 64 GB DDR5 5600 dual-channel memory handles large datasets without swapping
  • 2 TB PCIe 4.0 NVMe SSD cuts boot and load times for games and apps

Specifications

BrandMSI
SeriesMSI Stealth A18 AI+
ModelStealth A18 AI+ A3XWJG-006US
Part NumberMS-STEALTHA18AI3006-HID1
ColorMidnight Black
Operating SystemWindows 11 Home
CPUAMD Ryzen AI 9 HX 370
Screen18" UHD+ 120Hz
Memory64GB
Storage2 TB M.2 PCIe 4.0 x4 NVMe SSD
Graphics CardNVIDIA® GeForce RTX™ 5090 Laptop GPU
Video Memory24GB
CommunicationLAN and WLAN
Dimensions (W x D x H)15.74" x 11.41" x 0.94"
Weight6.39 lbs
CPU TypeAMD Ryzen AI 300 Series
Processor NameAMD Ryzen AI 9 HX 370
Number of Cores12-core Processor
Turbo FrequencyMax Turbo Frequency 5.1 GHz
CPU L3 Cache36 MB
Screen Size18.0"
TouchscreenNon-Touch Screen
Display TypeUHD+
Resolution3840 x 2400
Refresh Rate120Hz
Display FeaturesMini LED HDR
GPU/VPUNVIDIA GeForce RTX 5090 Laptop GPU
SSD2TB
HDDNo
Storage Spec2 TB M.2 PCIe 4.0 x4 NVMe SSD
Memory Speed5600MHz (Speeds subject to system capability)
Memory Spec2 x 32 GB
Max Memory Supported128GB
LAN2.5GbE Lan
WLAN802.11 be Wi-Fi 7
BluetoothBT 5.4
USB2x Type-A USB3.2 Gen2
Thunderbolt2x Type-C (USB4® / DisplayPort™/ Power Delivery 3.1/ Thunderbolt™ 4 compatible)
HDMI1x HDMI™ 2.1 (8K @ 60Hz / 4K @ 120Hz)
Audio Ports1x Mic-in/Headphone-out Combo Jack
TouchpadMulti Touch
KeyboardSteelSeries per-Key RGB with Anti-Ghost key (99 Key)
WebcamIR FHD w/shutter
Card ReaderSD Express Card Reader
StyleStandard
TypeGaming
UsageConsumer
AC Adapter/Charger280W
Battery4 cell (90Whr) Li-Ion

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How loud are the fans when the Ryzen AI 9 HX 370 and RTX 5090 run at full load all day?

Gelid GC Extreme thermal compound on the CPU and GPU lowers temperatures to reduce throttling during sustained workloads. The build includes burn-in stress testing for thermal performance.

Which external display cables or docks must I already own to drive the 3840 x 2400 Mini LED panel at 120 Hz?

The 18 inch UHD+ Mini LED display is built into the chassis. No external cables or docks are required to run the internal screen at its native 120 Hz refresh rate.

Will my existing DDR5 5600 SO-DIMMs work alongside the factory 64 GB kit if I add more memory later?

The system ships with 64 GB (2 x 32 GB) DDR5 5600 dual-channel memory filling both slots. There are no free slots for additional modules.

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