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Midnight Black 18 inch gaming laptop closed on a flat surface

MSI

MSI Stealth A18 AI+ A3XWIG-009US gaming laptop 18" UHD+ 120Hz Mini LED Ryzen AI 9 HX 370 RTX

SKU CH-YGQM-E61PJ

An 18-inch UHD+ 120Hz Mini LED gaming laptop driven by a 12-core Ryzen AI 9 HX 370 processor and an RTX 5080 GPU with 16 GB GDDR7, plus 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 5080 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 Home

GPU NVIDIA GeForce RTX 5080 Laptop GPU

Memory 64GB

SSD 8 TB

  • 18-inch UHD+ Mini LED display at 120 Hz for sharp motion
  • Ryzen AI 9 HX 370 12-core CPU up to 5.1 GHz for heavy workloads
  • RTX 5080 with 16 GB GDDR7 for high-frame-rate gaming
  • 64 GB DDR5 5600 MHz memory for smooth multitasking
  • 8 TB PCIe 4.0 NVMe SSD for vast fast storage

18-inch UHD+ Mini LED gaming laptop

The MSI Stealth A18 AI+ A3XWIG-009US is an 18-inch gaming laptop built around a 12-core Ryzen AI 9 HX 370 processor and an RTX 5080 GPU with 16 GB of GDDR7 memory. It targets users who need desktop-class compute and graphics performance in a portable Midnight Black chassis that weighs 6.39 lbs. The 120 Hz Mini LED panel delivers a 3840 x 2400 resolution for sharp visuals in creative and competitive workflows.

Gelid GC Extreme thermal compound upgrade

The builder applies Gelid GC Extreme thermal interface material to both the CPU and GPU during assembly. This change lowers peak temperatures under sustained load, reducing the likelihood of thermal throttling during long rendering or gaming sessions. The laptop also ships with the latest stable BIOS and drivers pre-installed after a full burn-in and benchmark validation process. Every unit undergoes keyboard, touchpad, port, display and chassis inspections before it leaves the facility.

64 GB DDR5 memory and 8 TB NVMe storage

Sixty-four gigabytes of DDR5 5600 MHz memory in a dual-channel 2 x 32 GB configuration provides headroom for large datasets, virtual machines and heavy multitasking without paging. The 8 TB PCIe 4.0 x4 NVMe SSD offers ample space for game libraries, project assets and operating-system overhead while maintaining fast sequential throughput. Both the memory capacity and the storage volume are sized to keep demanding creative and engineering workloads running smoothly.

How it compares

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

Price $4,461.99
Pricier than about 90% 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+ A3XWIG-009US
Part numberMS-STEALTHA18AI3009-HID3
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 5080 Laptop GPU
Video RAM16 GB
GPU modelNVIDIA® GeForce RTX™ 5080 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)

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Questions about this item

Will the 64 GB DDR5 5600 MHz memory need upgrading for future workloads?

The laptop ships with 64 GB of DDR5 5600 MHz memory in a dual-channel 2 x 32 GB configuration. This capacity already covers most demanding workloads, so an upgrade is unlikely to be needed soon.

Which component hits its limit first during long gaming sessions?

The RTX 5080 GPU with 16 GB GDDR7 and the Ryzen AI 9 HX 370 processor share the cooling system. Under sustained load the GPU typically reaches its thermal ceiling before the CPU does.

How loud and hot does the system get when it runs all day?

Gelid GC Extreme thermal compound is applied to both CPU and GPU to lower temperatures and reduce fan speed. The 18 inch Mini LED display and 0.94 inch chassis help dissipate heat, keeping noise and surface temperatures moderate during extended use.

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