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Midnight Black 18 inch gaming laptop with thin profile

MSI

MSI Stealth A18 AI+ A3XWJG 18" UHD+ 120Hz Mini LED Ryzen AI 9 HX 370 RTX 5090 96 GB DDR5 8 TB

SKU CH-T53Y-0N8PZ

An 18-inch UHD+ 120Hz Mini LED gaming laptop driven by a 12-core Ryzen AI 9 HX 370 processor and an RTX 5090 GPU with 24 GB GDDR7, backed by 96 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 5090 Laptop GPU
  • Memory size96 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 5090 Laptop GPU

Memory 96GB

SSD 8 TB

  • 18-inch UHD+ Mini LED display at 120 Hz for vivid detail
  • AMD Ryzen AI 9 HX 370 12-core processor up to 5.1 GHz for heavy workloads
  • NVIDIA RTX 5090 laptop GPU with 24 GB GDDR7 for advanced graphics
  • 96 GB DDR5 5600 MHz memory for smooth multitasking
  • 8 TB PCIe 4.0 NVMe SSD for massive fast storage

18-inch UHD+ Mini LED display

The MSI Stealth A18 AI+ A3XWJG ships with an 18-inch Mini LED panel at 3840 by 2400 resolution and a 120 Hz refresh rate. The high pixel density and local dimming deliver deep contrast for creative work and immersive gaming. Factory calibration targets colour-critical workflows straight out of the box.

Gelid GC Extreme thermal compound upgrade

HIDevolution replaces the stock thermal interface material with Gelid GC Extreme on both the CPU and GPU. The higher conductivity paste lowers core temperatures under sustained load, reducing the likelihood of thermal throttling during long render or gaming sessions. The service includes a full stress-test burn-in to verify the improvement.

96 GB DDR5 5600 dual-channel memory

Two 48 GB modules provide 96 GB of DDR5 5600 memory in dual-channel mode, giving headroom for large datasets, virtual machines and heavy multitasking. An 8 TB M.2 PCIe 4.0 x4 NVMe SSD supplies vast capacity with fast sequential throughput for project files and game libraries. The chassis measures 15.74 by 11.41 by 0.94 inches and weighs 6.39 lbs, so desk space and portability remain practical for a mobile workstation.

How it compares

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

Price $6,155.99
Pricier than about 92% 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-HID6
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 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 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)

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Questions about this item

How often will the Gelid GC Extreme thermal paste on the Ryzen AI 9 HX 370 and RTX 5090 need replacement?

High-quality thermal compounds such as Gelid GC Extreme typically remain effective for several years under normal gaming workloads; replacement is only necessary if temperatures rise noticeably after extended use.

Which limit appears first during sustained loads on the 12-core processor and 24 GB GDDR7 graphics?

The 120 Hz Mini LED panel caps sustained frame rates at 120 fps, so the display refresh ceiling is reached before the CPU or GPU hit their thermal or power limits.

What are the noise, heat and power characteristics when the 96 GB DDR5 system runs all day?

The Gelid GC Extreme upgrade keeps CPU and GPU temperatures lower during long sessions, which lets the cooling fans spin more slowly and reduces acoustic output while maintaining stable performance.

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