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The ASUS ROG Strix G18 is an 18-inch gaming laptop built around up to an Intel Core Ultra 9 275HX and up to an NVIDIA GeForce RTX 5080 Laptop GPU running at a 175W max TGP. It targets desktop-replacement gamers who want a big screen and headroom to overclock: the cooling system is rated for 230W total system power in Turbo mode and 250W in Manual mode. It also brings up to 32GB of DDR5-5600 RAM, a 2TB PCIe Gen 4 SSD, Advanced Optimus and DLSS. Against slimmer 16-inch rivals it trades portability for screen size and sustained performance, while its size and fan noise under load are the usual costs of that approach.
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It is available with up to an Intel Core Ultra 9 processor 275HX and up to an NVIDIA GeForce RTX 5080 Laptop GPU with a 175W max TGP. Memory goes up to 32GB of DDR5-5600 RAM, and storage is a 2TB PCIe Gen 4 SSD.
NVIDIA Advanced Optimus uses a MUX switch to send frames from the discrete GPU straight to the display. It switches between the discrete and integrated GPU automatically to save battery. It also supports DLSS 4, NVIDIA Reflex 2 with Frame Warp, full ray tracing and neural rendering. In Turbo mode the system can reach 230W, and in Manual mode it can reach 250W of total system power.
The cooling system combines an end-to-end vapor chamber, a sandwiched heatsink, Tri-Fan Technology and Conductonaut Extreme liquid metal on both the CPU and GPU. All exhaust vents sit at the rear of the hinge. Air is drawn in through the sides and bottom and also flows through the keyboard deck. Noise in Turbo mode is lower than on the previous generation. The RAM, SSD and fans can be reached without tools, and the SSD slots use a Q-latch system. A frame covers the rest of the mainboard and can be removed with a few screws.
