ASUS JAPAN has announced a new 18-inch gaming laptop, the ROG Strix G18 G815LR-U9R5070TI300. It goes on sale on June 24 at 649,800 yen. Pairing Intel's latest processor with a GeForce RTX 5070 Ti and a large display that supports 2560 x 1600 resolution at a 300Hz refresh rate, it is a high-end model built with desktop-style use in mind.

A High-End Pairing of the Latest Core Ultra 9 and RTX 5070 Ti

The CPU is Intel's latest-generation Core Ultra 9 290HX Plus. It includes a dedicated NPU for AI processing (Intel AI Boost), so AI-enabled apps such as image generation and transcription can run efficiently without leaning entirely on the CPU or GPU.

For graphics, it carries a GeForce RTX 5070 Ti Laptop GPU running at up to 140W, backed by 12GB of fast GDDR7 video memory. That gives it room to handle demanding game titles as well as creative work such as video editing and 3D production.

Memory is 32GB of fast DDR5-5600, expandable to 64GB. Storage is a 1TB NVMe SSD over PCI Express 4.0, and the OS is Windows 11 Home preinstalled. With this balance of memory and storage, it is unlikely to bog down even when several heavy tasks run at once.

An 18-Inch 2.5K, 300Hz Screen and a 108-Key Japanese Keyboard

The display is a large 18-inch panel with a resolution of 2560 x 1600 (16:10 aspect ratio). The standout feature is the refresh rate: a non-glare panel that redraws 300 times per second. It is less prone to motion blur in fast competitive games, working in your favor in scenes with a lot of camera movement.

Image quality is not an afterthought either. The panel covers 100% of the DCI-P3 color gamut used in digital cinema and supports G-SYNC for smooth, tear-free output. By combining color accuracy with smooth rendering, it suits not only gaming but also photo and video work where color matters.

The keyboard is a 108-key Japanese layout with a numeric keypad. It uses an all-key RGB illuminated keyboard, letting you fine-tune the color and lighting effects of each individual key.

Tri-Fan Cooling, Thunderbolt 5, and Wi-Fi 7

To keep its high-performance parts running steadily, ASUS has put effort into cooling. The ROG Intelligent Cooling System uses Tri-Fan technology with three fans, a design that helps sustain performance even under heavy load. A tool-less design allows access to the interior without tools, making it easier to add memory or storage and to clean the inside. For calls and voice chat, there is also two-way AI noise cancellation that works on both input and output.

Connectivity is up to date as well. Wireless covers the latest Wi-Fi 7 standard and Bluetooth 5.4, and the wired side includes one 2.5GBASE-T LAN port, which is 2.5 times faster than common gigabit Ethernet.

The port selection is generous, too. It offers two Thunderbolt 5 ports in Type-C form (supporting video output and USB PD charging), three USB 3.2 Gen2 Type-A ports, one HDMI port, and one combined microphone/headphone jack. Even with many external displays and peripherals connected, you are unlikely to run short of ports.

Battery life, measured under the JEITA 3.0 standard, is about 5.3 hours during video playback and about 12.5 hours when idle. The body measures 399.0 (W) x 298.0 (D) x 23.5 to 32.0 (H) mm and weighs about 3.2kg. Rather than carrying it around, it is a machine better suited to staying put on a desk at home. It comes in a single color, Eclipse Gray.

A Higher-End SCAR 18 Arrives in the Same Window

Around the same time, ASUS JAPAN also announced the higher-end ROG Strix SCAR 18 G835 series. That lineup lets you choose a GeForce RTX 5090 or RTX 5080 and targets users who want even more performance. The ROG Strix G18 covered here, built around the RTX 5070 Ti and a 300Hz large screen, can be seen as striking a balance between price and performance within the high-end tier.

Summary

The new ROG Strix G18 G815LR-U9R5070TI300 brings together a latest-generation combination of the Core Ultra 9 290HX Plus and the RTX 5070 Ti, an 18-inch 2.5K screen with 300Hz output, and advanced interfaces such as Thunderbolt 5 and Wi-Fi 7. At 649,800 yen it sits at a serious price point, but its long-term touches, such as Tri-Fan cooling and a tool-less design, are worth noting. It goes on sale on June 24, and together with the higher-end SCAR 18 series, it looks set to be a strong candidate for anyone shopping for a high-end gaming laptop in the summer of 2026.