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Midnight Black 18 inch gaming laptop with thin profile and Mini LED display

MSI

MSI Stealth A18 AI+ A3XWIG-009US 18" UHD+ 120Hz Mini LED Ryzen AI 9 HX 370 RTX 5080 64GB DDR5

SKU CH-12SK-7QJAQ

An 18-inch UHD+ 120Hz Mini LED gaming laptop with a Ryzen AI 9 HX 370 12-core processor, RTX 5080 16GB GDDR7 graphics, 64GB DDR5 memory and an 8TB 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 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 Pro

GPU NVIDIA GeForce RTX 5080 Laptop GPU

Memory 64GB

SSD 8 TB

  • 12-core Ryzen AI 9 HX 370 reaches 5.1 GHz turbo for heavy workloads
  • RTX 5080 with 16 GB GDDR7 drives high-frame-rate 4K gaming
  • 18-inch UHD+ Mini LED at 120 Hz delivers sharp motion clarity
  • 64 GB DDR5 5600 dual-channel memory handles large multitask sessions
  • 8 TB PCIe 4.0 NVMe SSD provides vast low-latency storage

18-inch UHD+ Mini LED display

The 18-inch UHD+ Mini LED panel runs at a 120Hz refresh rate and shows a 3840 by 2400 resolution. The tall 16 by 11 aspect ratio adds vertical space for timelines and code. Mini LED backlighting gives deep contrast for HDR content. It suits creators and gamers who want a large, sharp canvas.

Ryzen AI 9 HX 370 with RTX 5080

The 12-core Ryzen AI 9 HX 370 reaches a 5.1 GHz maximum turbo frequency with 36 MB of L3 cache. The RTX 5080 laptop GPU carries 16 GB of GDDR7 video memory. Together they handle 3D rendering, video editing and high-refresh gaming. Buyers who only need office apps or light browsing should look at thinner, lighter models.

64 GB DDR5 5600 dual-channel memory

The system ships with 64 GB of DDR5 5600 memory in a dual-channel 2 by 32 GB layout. This capacity lets you run large datasets, virtual machines and heavy multitasking without paging. If your workload fits comfortably in 32 GB, a smaller kit will cost less and weigh less.

How it compares

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

Price $4,696.99
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-HID3P
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 Pro
More details
Pointing deviceMulti Touch
KeyboardSteelSeries per-Key RGB with Anti-Ghost key (99 Key)

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Questions about this item

Should I pick the 64 GB DDR5 version or look for a 32 GB model?

The listing shows a single 64 GB DDR5 5600 MHz configuration with two 32 GB modules in dual channel. No smaller capacity is offered for this Stealth A18 AI+ build.

What does the 5.1 GHz max turbo on the Ryzen AI 9 HX 370 actually deliver in this laptop?

The 12 core 24 thread processor can reach 5.1 GHz when thermal headroom allows; Gelid GC Extreme paste on CPU and GPU helps sustain higher clocks during heavy loads.

How fast is the 8 TB PCIe 4.0 x4 NVMe SSD in real use?

The drive uses a PCIe 4.0 x4 NVMe interface, so sequential reads and writes are capped at the Gen 4 lane limit; actual speeds depend on workload and controller.

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