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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

  • Screen size18.0 in (45.7 cm)
  • ProcessorIntel Core Ultra 9 (Series 2)
  • Graphics processorGeForce RTX 5070 Laptop GPU
  • Memory size32 GB
  • SSD storage4 TB
  • Display resolution2560 × 1600

Model 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.

How it compares

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

Price $2,009.99
Typical for this category: the median of 5,382 items is $1,978.99.
Screen size 18.0 in (45.7 cm)
Higher than about 90% of the 5,361 comparable items (median 16 in).
Memory size 32 GB
Typical for this category: the median of 5,206 items is 32 GB.

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Specifications

Product
Brand nameMSI
Model nameMSI Crosshair 18 HX AI
Product colorCosmo Gray
Product typeGaming
Processor
ProcessorIntel Core Ultra 9 (Series 2)
Processor model2.7 GHz
Memory
Memory size32 GB
Storage
SSD storage4 TB
Hard driveNo
Display
Screen size18.0 in (45.7 cm)
Display resolution2560 × 1600
Graphics
Graphics processorGeForce RTX 5070 Laptop GPU
Graphics typeDedicated Card
Software
Operating systemWindows 11 Home

Other versions of this model

5 more in the same range

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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