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Eclipse Gray 18 inch gaming laptop closed lid

ASUS

ASUS ROG Strix G18 G815LW 18" 240Hz Ultra 9 275HX RTX 5080 96 GB DDR5 2 TB NVMe gaming laptop

SKU CH-BH4Y-0NZPX

An 18-inch 240 Hz WQXGA laptop with a 24-core Intel Core Ultra 9 275HX, RTX 5080 16 GB GDDR7, 96 GB DDR5 and 2 TB NVMe

  • ColorEclipse Gray
  • Operating SystemWindows 11 Pro
  • CPUIntel® Core Ultra 9-275HX
  • Screen18" WQXGA
  • Memory96GB
  • Storage2 TB M.2 PCIe 4.0 x4 NVMe SSD

CPU Name Intel Core Ultra 9 275HX

Operating System Windows 11 Pro

GPU|Memory|SSD|Option GeForce RTX 5080 Laptop GPU|96GB|2 TB|QHD+

  • 18" 240 Hz WQXGA display delivers smooth high-resolution visuals
  • Intel Core Ultra 9 275HX 24-core CPU reaches 5.5 GHz turbo for heavy workloads
  • NVIDIA RTX 5080 with 16 GB GDDR7 powers demanding games and creative apps
  • 96 GB DDR5 5600 MHz memory handles multitasking and large datasets
  • 2 TB PCIe 4.0 NVMe SSD provides fast boot and load times

18-inch 240 Hz gaming laptop

This ASUS ROG Strix G18 G815LW pairs an 18-inch WQXGA 240 Hz IPS-level display with an Intel Core Ultra 9 275HX 24-core processor and NVIDIA GeForce RTX 5080 graphics. It ships with 96 GB of DDR5 5600 MHz memory and a 2 TB PCIe 4.0 x4 NVMe SSD. The configuration targets enthusiasts who want desktop-class performance in a portable chassis.

Thermals with premium interface materials

HIDevolution applies Thermal Grizzly Conductonaut on the CPU and Gelid GC Extreme on the GPU to lower core temperatures under sustained load. The 24-core Arrow Lake processor reaches a 5.5 GHz max turbo frequency while the RTX 5080 carries 16 GB of GDDR7 video memory. Together these measures aim to keep fan noise and power draw controlled during extended gaming or rendering sessions.

96 GB DDR5 5600 MHz memory capacity

The system includes two 48 GB modules for a total of 96 GB running in dual-channel mode at 5600 MHz. This capacity supports heavy multitasking, large texture workloads and memory-intensive applications without paging. Buyers who need more than 96 GB of system memory or require ECC support should consider alternatives.

Highlights

  • 18" 240 Hz WQXGA display delivers smooth high-resolution visuals
  • Intel Core Ultra 9 275HX 24-core CPU reaches 5.5 GHz turbo for heavy workloads
  • NVIDIA RTX 5080 with 16 GB GDDR7 powers demanding games and creative apps
  • 96 GB DDR5 5600 MHz memory handles multitasking and large datasets
  • 2 TB PCIe 4.0 NVMe SSD provides fast boot and load times

Specifications

BrandASUS
SeriesROG Strix G18
ModelG815LW-G18.U95080
Part NumberG815LW-G18.U95080-HID9P
ColorEclipse Gray
Operating SystemWindows 11 Pro
CPUIntel® Core Ultra 9-275HX
Screen18" WQXGA
Memory96GB
Storage2 TB M.2 PCIe 4.0 x4 NVMe SSD
Graphics CardNVIDIA® GeForce® RTX™ 5080
Video Memory16GB
Dimensions (W x D x H)15.71" x 11.73" x 0.93" ~ 1.26"
Weight7.54 lbs
CPU TypeIntel Core Ultra 9 (Series 2)
Processor NameIntel Core Ultra 9 275HX
Number of Cores24-core (8P+16E) Processor
Core NameArrow Lake
Turbo FrequencyMax Turbo Frequency 5.5 GHz
CPU L3 Cache36 MB
Screen Size18.0"
TouchscreenNon-Touch Screen
Display TypeWQXGA
Resolution2560 x 1600
Refresh Rate240Hz
Display Features2.5K 240Hz IPS-Level
GPU/VPUGeForce RTX 5080 Laptop GPU
Graphic TypeDedicated Card
SSD2TB
HDDNo
Storage Spec2 TB M.2 PCIe 4.0 x4 NVMe SSD
Memory SpeedDDR5 5600MHz
Memory Spec2 x 48 GB
Memory Slot (Total)2
Memory Slot (Available)0
Max Memory Supported96GB
WLANWi-Fi 7(802.11be) (Triple band) 2*2
WiFi GenerationWi-Fi 7
BluetoothBluetooth® 5.4
USB3x USB 3.2 Gen 2 Type-A (data speed up to 10Gbps)
Thunderbolt2x Thunderbolt™ 5 with support for DisplayPort™ / power delivery / G-SYNC (data speed up to 120Gbps)
HDMI1x HDMI 2.1 FRL
Audio Ports3.5mm Combo Audio Jack
AudioSmart Amp Technology, Dolby Atmos, AI noise-canceling technology, Hi-Res certification (for headphone)
Speaker2-speaker system with Smart Amplifier Technology
TouchpadYes
KeyboardBacklit Chiclet Keyboard Per-Key RGB
Backlit KeyboardBacklit
Webcam1080P FHD IR Camera for Windows Hello
Card ReaderNone
StyleThin and Light
TypeGaming & Entertainment
UsageConsumer
AC Adapter/ChargerRectangle Conn, 380W AC Adapter, Output: 20V DC, 19A, 380W, Input: 100-240V AC, 50/60Hz universal
Battery90WHrs, 4S1P, 4-cell Li-ion

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How is the thermal interface material applied to the CPU and GPU during installation, and what step is often missed?

The CPU receives Thermal Grizzly Conductonaut liquid metal while the GPU gets Gelid GC Extreme paste; both require precise, even coverage and correct heatsink pressure, and the step often missed is re-torquing the mounting screws after the first thermal cycle.

What maintenance will the DDR5 memory and PCIe 4.0 NVMe SSD need later?

The 96 GB DDR5 5600 MHz kit (2 × 48 GB) and 2 TB NVMe SSD have no scheduled maintenance; only firmware updates for the SSD and occasional dust removal from the chassis vents are recommended.

What limit appears first during sustained load on the 240 Hz WQXGA panel with the RTX 5080?

The GPU 16 GB GDDR7 frame buffer fills before the 240 Hz refresh ceiling is reached, capping 1 % low frame rates in memory-heavy titles at 2560 × 1600 resolution.

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