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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 RTX 5090 Ryzen AI 9 HX 370 96GB 2TB

SKU CH-8KF5-9AA7S

An 18-inch UHD+ 120Hz Mini LED gaming laptop with a 12-core Ryzen AI 9 HX 370 processor, RTX 5090 graphics with 24GB GDDR7, 96GB DDR5 memory and a 2TB PCIe 4.0 NVMe SSD

  • Screen size18.0 in (45.7 cm)
  • ProcessorAMD Ryzen AI 300 Series
  • Graphics processorNVIDIA GeForce RTX 5090 Laptop GPU
  • Memory size96 GB
  • Storage drive2 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 Home

GPU NVIDIA GeForce RTX 5090 Laptop GPU

Memory 96GB

SSD 2 TB

  • 18-inch UHD+ Mini LED display at 120 Hz for razor-sharp visuals
  • Ryzen AI 9 HX 370 12-core CPU up to 5.1 GHz turbo for heavy workloads
  • RTX 5090 GPU with 24 GB GDDR7 memory for top-tier graphics power
  • 96 GB DDR5 5600 MHz RAM in dual channel for smooth multitasking
  • 2 TB PCIe 4.0 NVMe SSD for ultra-fast boot and load times

18-inch UHD+ Mini LED mobile workstation

This 18-inch laptop pairs a 12-core Ryzen AI 9 HX 370 processor with an RTX 5090 GPU carrying 24 GB of GDDR7 memory. The 3840 by 2400 Mini LED panel runs at 120 Hz. Ninety-six gigabytes of DDR5 memory and a 2 TB PCIe 4.0 NVMe SSD provide capacity for large datasets and creative projects. Windows 11 Home is pre-installed.

Sustained thermal performance with Gelid GC Extreme

The builder applies Gelid GC Extreme thermal compound to both the CPU and GPU during assembly. This upgrade targets lower core temperatures during extended compute or rendering sessions. Reduced thermal load helps the 12-core processor maintain its 5.1 GHz boost ceiling for longer periods. Stress testing is performed before shipment to verify stability under load.

Midnight Black chassis with verified port function

The Midnight Black enclosure measures 15.74 by 11.41 by 0.94 inches and weighs 6.39 lbs. Every unit undergoes a physical inspection plus keyboard, touchpad, and port functionality checks. The latest stable BIOS and drivers are installed prior to dispatch. A one-year warranty covers the custom build work performed by the authorized BTO dealer.

How it compares

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

Price $4,978.99
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-HID4
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 size96 GB
RAM type and speed5600 MHz (Speeds subject to system capability)
Memory configuration2 × 48 GB
Maximum supported memory128 GB
Storage
Storage drive2 TB M.2 PCIe 4.0 x4 NVMe SSD
SSD storage2 TB
Hard driveNo
Storage configuration2 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 Home
More details
Pointing deviceMulti Touch
KeyboardSteelSeries per-Key RGB with Anti-Ghost key (99 Key)

Other versions of this model

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Questions about this item

How hot and loud does the Ryzen AI 9 HX 370 and RTX 5090 run during all-day workloads?

The system uses Gelid GC Extreme thermal compound on both the CPU and GPU to lower temperatures and reduce throttling during intensive tasks, helping keep fan noise in check over long sessions.

What power adapter and external display cables must I already own to use this laptop?

The laptop ships with its required power supply; you only need to provide any external display cables such as HDMI or DisplayPort leads if you plan to connect additional monitors.

Will my older PCIe 3.0 NVMe drives work if I swap them into the storage slot?

The 2 TB M.2 PCIe 4.0 x4 NVMe SSD slot is backward compatible with PCIe 3.0 NVMe drives, so older sticks will function at their rated speeds.

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