ASUS ROG Strix G18 (2026) / ASUS ROG Zephyrus G16 (2025) GU605CX

ASUS ROG Strix G18 (2026): G815LW-SA331X · RTX 5080 Laptop, 64 GB / 2 TB

ASUS ROG Zephyrus G16 (2025) GU605CX: GU605CX: the RTX 5090 Laptop GPU version; the GU605CX-QR111W and GU605CX-XS98 listed by ASUS come with 64 GB of memory and a 2 TB SSD. In the US, the GU605CX-G16.U9X5090 sold by Best Buy is listed with 32 GB. The same chassis is also sold with the RTX 5060/5070/5070 Ti/5080.

SpecificationASUS ROG Strix G18 (2026)ASUS ROG Zephyrus G16 (2025) GU605CX
Release year20262025
Release year2026 ASUS—
ProcessorIntel Core Ultra 9 290HX Plus ASUSIntel Core Ultra 9 285H; 16 cores, 16 threads; 2.9 GHz base, up to 5.4 GHz; 24 MB cache

The processor’s Intel AI Boost NPU delivers up to 13 TOPS of AI processing; some Windows AI features use this unit instead of the graphics card.

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CPU cores24 cores / 24 threads ASUS—
CPU frequency2.7 GHz; up to 5.5 GHz ASUS—
CPU cache36 MB ASUS—
NPUIntel AI Boost; up to 13 TOPS ASUS—
GraphicsGeForce RTX 5080 Laptop GPU; distinct from the desktop RTX 5080 ASUSNVIDIA GeForce RTX 5090 Laptop GPU, 24 GB GDDR7; ROG Boost 1647 MHz; 120 W (100 W + 20 W Dynamic Boost)

120 W is the upper power limit including Dynamic Boost: the extra 20 W is shifted to the GPU when the processor load is low and is not always available. The RTX 5070 Ti version of the same chassis is limited to 115 W, and the RTX 5060 and 5070 versions to 105 W.

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Graphics memory16 GB GDDR7 ASUS—
GPU power limit150 W + conditional 25 W Dynamic Boost; up to 175 W ASUS—
GPU clockROG Boost 1550 MHz; 1500 MHz + 50 MHz OC ASUS—
Display18-inch Mini LED; 2560 × 1600, 16:10 ASUS16-inch 2.5K (2560 × 1600) OLED, 16:10, 240 Hz; 100% DCI-P3; G-Sync; Pantone Validated

240 Hz shows up to 240 frames per second in games; G-Sync matches the display refresh rate to the graphics card’s frame rate to prevent tearing. Pantone Validated means the display colours are verified against Pantone reference colours. ASUS does not give brightness or response time on this page.

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Refresh rate240 Hz; G-SYNC ASUS—
Color and surfaceClaimed 100% DCI-P3; anti-glare, low-reflection AGLR ASUS—
GPU switchingMUX switch and NVIDIA Advanced Optimus ASUS—
RAM64 GB: 2 × 32 GB DDR5-5600 SO-DIMM ASUS—
Memory slots2 SO-DIMM slots; both occupied; up to 64 GB ASUS—
Storage2 TB PCIe 4.0 NVMe M.2 SSD ASUS2 TB M.2 NVMe PCIe 4.0 SSD; 2 × M.2 PCIe slots in total

The second M.2 slot allows an extra SSD. ASUS gives no separate PCIe generation for the free slot.

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SSD slots2 M.2 PCIe slots in total, including used slots ASUS—
USB-A3 × USB 3.2 Gen 2, 10 Gbit/s ASUS—
USB-C2 × Thunderbolt 5; DisplayPort, Power Delivery, G-SYNC ASUS—
Video outputHDMI 2.1 FRL ASUS—
Wired networking2.5 Gbit/s Ethernet ASUS—
Wireless networkingTri-band 2 × 2 Wi-Fi 7; Bluetooth 5.4 ASUS—
Camera1080p IR; Windows Hello ASUS—
AudioTwo speakers, Dolby Atmos; 3.5 mm combo jack ASUS2 tweeters and 4 speakers with dual force-cancelling woofers; Smart Amp; Dolby Atmos; 3-microphone array, AI noise cancelling

The force-cancelling woofer layout uses opposing drivers to reduce bass vibration passing into the chassis.

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KeyboardPer-key RGB, numeric keypad ASUS—
Battery90 Wh; 4-cell lithium-ion ASUS—
Power adapter380 W; 20 V / 19 A ASUS—
Dimensions399 × 298 × 23.5–32 mm ASUS—
Weight3.20 kg ASUS—
Operating systemWindows 11 Pro ASUSWindows 11 Home or Windows 11 Pro (depending on SKU) ASUS
Graphics switching—MUX Switch and NVIDIA Advanced Optimus

Advanced Optimus switches the internal display between the processor’s integrated graphics and the RTX 5090 without a restart. The MUX switch connects the display directly to the RTX 5090, removing the integrated graphics from the path in games.

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Display surface—Anti-glare, low-reflection coating (AGLR)

The coating is used to reduce reflections from lamps and windows in bright rooms.

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Memory—64 GB LPDDR5X-7467, soldered on board, dual channel; no memory slot

Memory cannot be upgraded later; the capacity chosen at purchase is permanent.

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Ports—1 × Thunderbolt 4 (40 Gbps, DisplayPort, power input); 1 × USB-C 10 Gbps (DisplayPort, power input, G-SYNC); 2 × USB-A 10 Gbps; HDMI 2.1 FRL; UHS-II SD card reader (312 MB/s); 3.5 mm audio

Both USB-C ports support an external display and charging; the 10 Gbps USB-C port also carries G-SYNC to an external display. ASUS does not state the USB-C charging power.

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Wireless—Wi-Fi 7 (802.11be), tri-band, 2×2; Bluetooth 5.4 ASUS
Battery and adapter—90 Wh, 4-cell lithium-ion; 240 W adapter (20 V, 12 A)

ASUS’s Middle East page also lists a 100 W USB-C adapter in the box and notes that the adapter can vary by region and model.

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Camera and keyboard—1080p FHD IR camera (Windows Hello); single-zone RGB backlit keyboard; Slash Lighting on the lid

The IR camera enables face sign-in with Windows Hello.

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Dimensions and weight—35.4 × 24.6 × 1.49–1.74 cm; 1.95 kg

The RTX 5060 and 5070 versions are 1.64 cm and 1.85 kg; the RTX 5070 Ti, 5080 and 5090 versions are 1.74 cm and 1.95 kg.

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