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Gray ASUS ROG Strix laptop with 18 inch screen and 14 inch portable monitor attached

ASUS

ASUS ROG Strix G815LP 18" 240Hz Intel Ultra 9-275HX RTX 5070 64GB 2TB Duex Max DS

SKU CH-RN78-BQGVJ

An 18-inch 240Hz WQXGA gaming laptop with Intel Core Ultra 9 275HX, RTX 5070 8GB GDDR7, 64GB DDR5, 2TB PCIe SSD and a bundled 14-inch FHD portable monitor

  • ColorGray
  • CPU TypeIntel Core Ultra 9
  • Turbo Frequency5.4GHz
  • CPU L3 Cache36MB Cache
  • Screen Size18.0"
  • TouchscreenNo
  • 18-inch 240 Hz IPS display at 2560x1600 for smooth competitive visuals
  • Intel Core Ultra 9 275HX up to 5.4 GHz with 24 cores for heavy multitasking
  • NVIDIA GeForce RTX 5070 8GB GDDR7 graphics for high-frame-rate gaming
  • 64GB DDR5 memory plus 2TB PCIe NVMe SSD for instant load times
  • Included 14-inch portable monitor expands workspace anywhere

18-inch 240Hz display

The ASUS ROG Strix G815LP is an 18-inch gaming laptop built around a 240Hz IPS panel at 2560x1600 resolution. It targets players and creators who want a large, fast screen without an external monitor. The system ships with Windows 11 Pro and includes a portable 14-inch FHD Duex Max DS second display.

Intel Ultra 9 275HX sustained load

The 24-core Ultra 9 275HX runs at a 2.70GHz base and can reach 5.4GHz turbo across its eight performance cores. With 36MB of L3 cache and 64GB of DDR5 SO-DIMM memory, the processor maintains high throughput during extended compile, render or simulation tasks rather than only in short bursts.

Thermals noise and 280W power adapter

A 280W power supply feeds the CPU and RTX 5070 8GB GDDR7 graphics while the 90Wh battery handles mobile use. The chassis measures 1.4 inches thick, allowing the cooling system to move heat away from the GPU and CPU during long sessions. Fan noise stays in the background at typical desktop workloads.

Highlights

  • 18-inch 240 Hz IPS display at 2560x1600 for smooth competitive visuals
  • Intel Core Ultra 9 275HX up to 5.4 GHz with 24 cores for heavy multitasking
  • NVIDIA GeForce RTX 5070 8GB GDDR7 graphics for high-frame-rate gaming
  • 64GB DDR5 memory plus 2TB PCIe NVMe SSD for instant load times
  • Included 14-inch portable monitor expands workspace anywhere

Specifications

BrandASUS
SeriesROG Strix
ColorGray
CPU TypeIntel Core Ultra 9
Turbo Frequency5.4GHz
CPU L3 Cache36MB Cache
Screen Size18.0"
TouchscreenNo
Resolution2560x1600
Refresh Rate240 Hz
Operating SystemWindows 11 Pro
GPU/VPUGeForce RTX 5070
Graphic TypeDedicated Card
SSD2TB
HDDNo
Storage Spec2TB PCIe SSD
Memory64GB
Memory SpeedDDR5
Memory TypeSO-DIMM
Optical Drive TypeNo Optical Drive
WLAN802.11be
BluetoothBluetooth 5.4
HDMI1 x HDMI
Audio Ports1 x Headphone/Microphone Combo Jack
Virtual Reality ReadyYes
KeyboardStandard
Backlit KeyboardBacklit
WebcamYes
Card ReaderNo
StyleStandard
TypeGaming

Questions about this item

How loud and hot does the 18-inch 240 Hz laptop get when the Intel Ultra 9-275HX runs at 5.4 GHz all day?

The 280 W power supply feeds the 24-core processor and RTX 5070 8 GB GDDR7 graphics, so sustained loads will spin the internal fans and warm the chassis; the 90 Wh battery provides limited unplugged runtime under full load.

What must I already own to use the included 14-inch Duex Max DS monitor with this laptop?

The portable 14-inch FHD display connects through the Thunderbolt 4 or HDMI port, so you only need the cable that matches the port you choose; no extra dock or power brick is required for the second screen.

Will my older USB 3.0 peripherals work with the Thunderbolt 4 and USB 3.2 Type-C ports on this machine?

Yes, both ports are backward compatible with earlier USB standards, so existing USB 3.0 mice, drives and headsets will function at their rated speeds.

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