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Eclipse Gray 18 inch gaming laptop closed lid ROG Strix branding

ASUS

ASUS ROG Strix G18 G815LW 18" WQXGA 240Hz Ultra 9-275HX RTX 5080 32 GB DDR5 4 TB NVMe gaming

SKU CH-1P4Q-04RMF

An 18-inch WQXGA 240Hz gaming laptop with an Intel Core Ultra 9 275HX 24-core processor, NVIDIA GeForce RTX 5080 16GB GDDR7 graphics, 32GB DDR5 memory and a 4TB NVMe SSD

  • ColorEclipse Gray
  • Operating SystemWindows 11 Home
  • CPUIntel® Core Ultra 9-275HX
  • Screen18" WQXGA
  • Memory32GB
  • Storage4 TB M.2 PCIe 4.0 x4 NVMe SSD

CPU Name Intel Core Ultra 9 275HX

Operating System Windows 11 Home

GPU|Memory|SSD|Option GeForce RTX 5080 Laptop GPU|32GB|4 TB|QHD+

  • 18" 240 Hz WQXGA display delivers ultra-smooth visuals at 2560 x 1600
  • Intel Core Ultra 9 275HX with 24 cores hits 5.5 GHz max turbo for heavy workloads
  • RTX 5080 with 16 GB GDDR7 powers high-frame-rate gaming and creative tasks
  • 32 GB DDR5 5600 MHz dual-channel memory keeps multitasking responsive
  • 4 TB PCIe 4.0 x4 NVMe storage provides fast boot and load times

18-inch WQXGA 240Hz gaming laptop

The ASUS ROG Strix G18 G815LW pairs an 18-inch 2560 x 1600 IPS-level panel running at 240 Hz with an Intel Core Ultra 9 275HX processor and NVIDIA GeForce RTX 5080 graphics. Thirty-two gigabytes of DDR5 5600 memory and a four-terabyte PCIe 4.0 NVMe array provide capacity for modern titles and heavy multitasking. The system ships with Windows 11 Home in an Eclipse Gray chassis.

Thermals and acoustics under load

HIDevolution applies Thermal Grizzly Conductonaut liquid metal on the CPU and Gelid GC Extreme on the GPU to lower junction temperatures during sustained workloads. The 24-core Arrow Lake processor reaches a 5.5 GHz max turbo while the RTX 5080 carries 16 GB of GDDR7 video memory. Stress testing validates stable operation before the unit leaves the facility.

Deciding specification — GPU video memory

The sixteen gigabytes of GDDR7 on the RTX 5080 determine whether this laptop can hold the texture working sets of current AAA titles at native WQXGA resolution. If your workflow or gaming library demands more VRAM than 16 GB, a different graphics configuration is required.

Highlights

  • 18" 240 Hz WQXGA display delivers ultra-smooth visuals at 2560 x 1600
  • Intel Core Ultra 9 275HX with 24 cores hits 5.5 GHz max turbo for heavy workloads
  • RTX 5080 with 16 GB GDDR7 powers high-frame-rate gaming and creative tasks
  • 32 GB DDR5 5600 MHz dual-channel memory keeps multitasking responsive
  • 4 TB PCIe 4.0 x4 NVMe storage provides fast boot and load times

Specifications

BrandASUS
SeriesROG Strix G18
ModelG815LW-G18.U95080
Part NumberG815LW-G18.U95080-HID2
ColorEclipse Gray
Operating SystemWindows 11 Home
CPUIntel® Core Ultra 9-275HX
Screen18" WQXGA
Memory32GB
Storage4 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
SSD4TB
HDDNo
Storage Spec4 TB (2 x 2 TB) M.2 PCIe 4.0 x4 NVMe SSD
Memory SpeedDDR5 5600MHz
Memory Spec2 x 16 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 do I install the 4 TB PCIe 4.0 x4 NVMe storage and what step do people get wrong?

The laptop ships with two 2 TB M.2 modules already fitted in the two available slots, so no installation is required. The common mistake is buying a third drive when no free slot remains.

What maintenance will the Gelid GC Extreme thermal compound on the GPU and the Conductonaut on the CPU need later?

Both compounds are designed to last the usable life of the system. No re-application schedule is specified; monitor temperatures and only service if thermals rise noticeably.

What limit appears first during sustained load on the RTX 5080 with 16 GB GDDR7?

The GPU’s 16 GB GDDR7 frame buffer fills before the 32 GB DDR5 5600 system memory becomes a bottleneck in memory-heavy workloads.

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