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Midnight Black 18 inch gaming laptop with slim magnesium aluminum chassis

MSI

MSI Stealth A18 AI+ A3HWIG-028US gaming laptop

SKU CH-R25H-T5613 MPN Stealth A18 AI+ A3HWIG-028US

An 18-inch 2560 x 1600 120 Hz laptop with AMD Ryzen AI 9 365 10-core processor, 32GB DDR5 5600 memory, 2TB NVMe SSD and NVIDIA GeForce RTX 5080 16GB graphics

  • ColorMidnight Black
  • Operating SystemWindows 11 Pro
  • CPUAMD Ryzen AI 9 365
  • Screen18"
  • Memory32GB DDR5
  • Storage2 TB NVMe SSD Gen4x4

Model

  • 16" ULTRA 7 255H RTX5060 32G 1TB A2HWFG-041US R
  • 18" ULTRA 9 275HX RTX5090 64G 2TB A2XWJG-035US
  • 16" RYZEN AI 9 370HX RTX5070ti 32GB 2TB A3XWHG-079US
  • 18" RYZEN AI 9 365 RTX 5080 32G 2TB
  • 16" RYZEN AI 9 370HX RTX 5080 32G 2TB

Struck-through versions exist but are not stocked here.

  • 18 inch 2560 x 1600 120 Hz display gives sharp visuals for gaming and creative work
  • AMD Ryzen AI 9 365 10 core CPU delivers fast multitasking and AI acceleration
  • GeForce RTX 5080 Laptop GPU with 16 GB video memory powers high frame rates and DLSS 4
  • 32 GB DDR5 5600 memory plus 2 TB NVMe Gen4x4 SSD ensures quick load times and ample storage
  • Magnesium aluminium chassis at .94 inch thin and 6.39 lbs balances portability with durability

Stealth A18 AI+ 18.0" UHD+

The MSI Stealth A18 AI+ A3HWIG-028US is an 18.0 inch gaming laptop built for creators and gamers who need high resolution and AI compute on the move. It pairs a 10 core AMD Ryzen AI 9 365 processor with an NVIDIA GeForce RTX 5080 Laptop GPU and 16GB video memory. The 2560 x 1600 non touch screen runs at 120 Hz for smooth motion.

Sustained load on Magnesium Aluminum Alloy Chassis

The Midnight Black Magnesium Aluminum Alloy Chassis measures 15.74" x 11.41" x 0.94" and weighs 6.39 lbs, providing a thin envelope for the RTX 5080 and Ryzen AI 300 Series silicon. Max Q optimisation balances clock speeds and thermals so the system maintains performance during extended rendering or gaming sessions. Dual fans and vapour chamber cooling move heat away from the CPU and GPU without throttling early.

32GB DDR5 5600 and 2TB NVMe Gen4x4 decide fit

Memory is 32GB DDR5 5600 soldered to the board with no user accessible slots, so capacity is fixed at purchase. Storage is a single 2TB NVMe Gen4x4 drive that can be swapped for a larger module if needed. Buyers who need more than 32GB RAM must choose a different model; those who need more storage can upgrade the SSD later.

Highlights

  • 18 inch 2560 x 1600 120 Hz display gives sharp visuals for gaming and creative work
  • AMD Ryzen AI 9 365 10 core CPU delivers fast multitasking and AI acceleration
  • GeForce RTX 5080 Laptop GPU with 16 GB video memory powers high frame rates and DLSS 4
  • 32 GB DDR5 5600 memory plus 2 TB NVMe Gen4x4 SSD ensures quick load times and ample storage
  • Magnesium aluminium chassis at .94 inch thin and 6.39 lbs balances portability with durability

Specifications

BrandMSI
SeriesStealth A18 AI+
ModelStealth A18 AI+ A3HWIG-028US
Part NumberStealth A18 AI+ A3HWIG-028US
ColorMidnight Black
Operating SystemWindows 11 Pro
CPUAMD Ryzen AI 9 365
Screen18"
Memory32GB DDR5
Storage2 TB NVMe SSD Gen4x4
Graphics CardNVIDIA GeForce RTX 5080 Laptop GPU
Video Memory16GB
CommunicationGB LAN (Up to 2.5G)
AI FeaturesAI Ready
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 9 365
Number of Cores10-core Processor
CPU L2 Cache10MB
CPU L3 Cache24 MB
Screen Size18.0"
TouchscreenNon-Touch Screen
Wide Screen SupportYes
Display TypeUHD+
Resolution3840 x 2400
PanelMini LED
Refresh Rate120 Hz
Color Gamut100% DCI-P3
GPU/VPUGeForce RTX 5080 Laptop GPU
Graphic TypeDedicated Card
SSD2TB NVMe
Memory SpeedDDR5 5600
Memory Spec16 GB x 2
Memory Slot (Total)2
Memory Slot (Available)0
Max Memory Supported96 GB
Optical Drive TypeNo
LANGB LAN (Up to 2.5G)
WLANMTK Wi-Fi 7
WiFi GenerationWi-Fi 7
BluetoothBluetooth 5.4
USB2 x USB 3.2 Gen 2 Type-A
Thunderbolt2 x Thunderbolt 4
HDMI1 x HDMI 2.1
Ethernet1 x RJ-45 (2.5Gbps)
Audio Ports1 x Headphone/Microphone Combo Jack
AudioSound by Dynaudio
Speaker2x2W Speaker, 4x2W Woofer
Virtual Reality ReadyYes
TouchpadMulti Touch
KeyboardSteelSeries per-Key RGB with Anti-Ghost key (99 Key)
Backlit KeyboardBacklit
WebcamIR FHD w/shutter
Card ReaderSD7.0
StyleThin and Light
TypeGaming / Home / Personal / Mainstream
UsageConsumer / Gaming / Home / Personal / Mainstream
AC Adapter/Charger280-watt AC Adapter
Battery4 cell (99.9Whr) Li-Ion
Package ContentStealth A18 AI+ A3HWIG-028US Gaming Notebook
Lithium Ion Battery
AC Adapter
Shipping weight5.72 kg
Package size483 × 368 × 1 mm

Other versions of this model

4 more in the same range

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

Questions about this item

How much heat and noise should I expect from the Ryzen AI 9 365 and RTX 5080 when the laptop runs all day?

The system pairs a 10-core Ryzen AI 9 365 with an RTX 5080 Laptop GPU in a chassis measuring .94 inches thick, so sustained workloads will produce noticeable fan noise and surface warmth.

What must I already own to use the 2.5 Gb LAN port and the HDMI 2.1 output on this Stealth A18 AI+?

You need a router or switch that supports 2.5 Gb Ethernet and a display or capture device with an HDMI 2.1 input to use those ports at full speed.

Will my existing DDR5 5600 SO-DIMMs and Gen4 NVMe SSD work alongside the factory 32 GB memory and 2 TB drive?

Yes — the laptop uses DDR5 5600 memory and a Gen4x4 NVMe slot, so compatible DDR5 5600 modules and Gen4 NVMe drives can be added or swapped without issue.

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