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Cosmo Gray 18 inch gaming laptop closed lid RGB keyboard visible

MSI

MSI Crosshair 18 HX AI gaming laptop 18" QHD+ 240Hz Ultra 9 275HX 32GB DDR5 4TB RTX 5070

SKU CH-BD9B-Q6PD0

An 18-inch QHD+ 240Hz gaming laptop with an Intel 24-core Ultra 9 275HX processor, 32GB DDR5 memory, 4TB SSD storage and a GeForce RTX 5070 8GB GDDR7 GPU

  • ColorCosmo Gray
  • CPU TypeIntel Core Ultra 9 (Series 2)
  • Processor Name2.70GHz
  • Screen Size18.0"
  • Resolution2560 x 1600
  • Operating SystemWindows 11 Home

Option 32GB RAM 4TB SSD

  • 18-inch QHD+ 240Hz display covers 100% DCI-P3 for vivid colour
  • Intel Ultra 9 275HX with 24 cores and 5.4GHz boost drives heavy workloads
  • 32GB DDR5 and 4TB SSD give ample memory and fast storage
  • RTX 5070 8GB GDDR7 delivers up to 988 AI TOPS for advanced graphics
  • Thunderbolt 4 plus HDMI 2.1 and RJ45 Ethernet enable versatile connectivity

18-inch QHD+ 240Hz gaming laptop

The MSI Crosshair 18 HX AI combines an 18-inch IPS panel at 2560 x 1600 with a 240Hz refresh rate and 100% DCI-P3 coverage. An Intel Core Ultra 9 275HX processor with 24 cores and 36MB smart cache drives the system alongside 32GB of DDR5 memory. A GeForce RTX 5070 laptop GPU with 8GB GDDR7 handles graphics workloads, while a 4TB SSD provides storage capacity. Windows 11 Home ships pre-installed.

90Wh battery and thermal management

The 90Wh battery powers the platform during mobile use. Cooler Boost 5 thermal design manages heat from the 24-core processor and dedicated GPU under sustained loads. Fan behaviour scales with component temperature to balance airflow against acoustic output. Power draw varies with workload intensity across the CPU and GPU combination.

Thunderbolt 4 and peripheral connectivity

A single Thunderbolt 4 port supports high-speed data, display output and charging through one connector. Three USB-A 3.2 ports, HDMI 2.1 and RJ45 Ethernet cover legacy and wired networking needs. The 24-zone RGB keyboard and HD privacy camera integrate into the Cosmo Gray chassis measuring 11.02 x 15.9 x 1.17 inches at 6.84 pounds. Wi-Fi 6E and Nahimic 3 audio complete the feature set.

Highlights

  • 18-inch QHD+ 240Hz display covers 100% DCI-P3 for vivid colour
  • Intel Ultra 9 275HX with 24 cores and 5.4GHz boost drives heavy workloads
  • 32GB DDR5 and 4TB SSD give ample memory and fast storage
  • RTX 5070 8GB GDDR7 delivers up to 988 AI TOPS for advanced graphics
  • Thunderbolt 4 plus HDMI 2.1 and RJ45 Ethernet enable versatile connectivity

Specifications

BrandMSI
ModelMSI Crosshair 18 HX AI
ColorCosmo Gray
CPU TypeIntel Core Ultra 9 (Series 2)
Processor Name2.70GHz
Screen Size18.0"
Resolution2560 x 1600
Operating SystemWindows 11 Home
GPU/VPUGeForce RTX 5070 Laptop GPU
Graphic TypeDedicated Card
SSD4 TB
HDDNo
Memory32GB
TypeGaming

Other versions of this model

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Questions about this item

How do I install a second M.2 SSD and what step do people often miss?

Remove the bottom panel, insert the drive into the empty M.2 slot at an angle then press it down and secure it with the screw; the step people miss is re-enabling the drive in the BIOS before Windows will see it

Which component will need replacement first under heavy daily use?

The 90Wh battery will degrade before the soldered 32GB DDR5 or the 4TB SSD, so plan on a battery swap after a few years of full charge cycles

What thermal limit appears first during sustained gaming on the Ultra 9 275HX and RTX 5070?

The CPU hits its 5.4GHz boost ceiling and then throttles to stay within the 36MB smart cache thermal envelope, so clock speed drops before the GPU reaches its 8GB GDDR7 limit

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