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Midnight Black 18 inch gaming laptop with thin profile

MSI

MSI Stealth A18 AI+ A3XWIG 18" UHD+ 120Hz Mini LED Ryzen AI 9 HX 370 RTX 5080 64GB 4TB gaming

SKU CH-P3Z8-G3DN8

An 18-inch UHD+ 120 Hz Mini LED laptop driven by a 12-core Ryzen AI 9 HX 370 and an RTX 5080 with 16 GB GDDR7, plus 64 GB DDR5 and a 4 TB PCIe 4.0 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 drive4 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 4 TB

  • 18-inch UHD+ Mini LED display at 120 Hz for vivid detail
  • Ryzen AI 9 HX 370 12-core processor up to 5.1 GHz for fast compute
  • RTX 5080 graphics with 16 GB GDDR7 for high-frame gaming
  • 64 GB DDR5 5600 MHz memory for heavy multitasking
  • 4 TB PCIe 4.0 NVMe SSD for rapid load times

18-inch UHD+ Mini LED display

The 18-inch UHD+ panel runs at 3840 by 2400 and refreshes at 120 Hz, using Mini LED backlighting for deep contrast and vivid colour. Creative professionals and competitive gamers get a large, high-resolution canvas that renders fine detail and fast motion without compromise.

AMD Ryzen AI 9 HX 370 with RTX 5080

The 12-core, 24-thread Ryzen AI 9 HX 370 reaches a maximum turbo frequency of 5.1 GHz and pairs with an NVIDIA GeForce RTX 5080 Laptop GPU equipped with 16 GB of GDDR7 video memory. This combination replaces earlier mobile workstations and mid-range desktop rigs, making the jump worthwhile when real-time rendering, complex simulation or 4K gaming workloads demand sustained multi-threaded compute and modern graphics features.

64 GB DDR5 and 4 TB NVMe storage

Dual-channel DDR5 memory at 5600 MHz provides 64 GB of capacity, while a 4 TB PCIe 4.0 x4 NVMe SSD supplies ample space for large project libraries, game installs and virtual machines. The memory headroom handles heavy multitasking and AI-assisted workflows comfortably; storage headroom runs out only when multiple uncompressed 8K video timelines or massive dataset caches exceed the four-terabyte limit.

How it compares

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

Price $3,327.99
Pricier than about 83% 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-HID2
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 drive4 TB M.2 PCIe 4.0 x4 NVMe SSD
SSD storage4 TB
Hard driveNo
Storage configuration4 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)

Other versions of this model

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Questions about this item

What are the exact width, depth and height measurements of the 18" UHD+ 120Hz Mini LED chassis?

The laptop measures 15.74 inches wide by 11.41 inches deep by 0.94 inches high and weighs 6.39 lbs.

How is the Gelid GC Extreme thermal compound applied to the CPU and GPU during the build-to-order process?

The authorised dealer disassembles the cooling assembly, cleans the factory paste, applies Gelid GC Extreme to both the Ryzen AI 9 HX 370 and the RTX 5080 dies, then reassembles and stress-tests the system.

When the 4 TB M.2 PCIe 4.0 x4 NVMe SSD reaches its write endurance limit, what replacement specification should be sourced?

Source another M.2 PCIe 4.0 x4 NVMe drive of the desired capacity; the slot supports the same interface and the existing 64 GB DDR5 5600 memory remains unaffected.

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