ASUS ROG Strix G18 2025 - Core Ultra 9, RTX 5080, 32GB, 2TB
ASUS
ASUS ROG Strix G18 2025 - Core Ultra 9, RTX 5080, 32GB, 2TB
The ASUS ROG Strix G18 2025 - Core Ultra 9, RTX 5080, 32GB, 2TB is a large-format gaming laptop built for enthusiasts who need desktop-class performance in a portable chassis. It pairs Intel's top-tier Core Ultra 9 275HX processor with an NVIDIA GeForce RTX 5080 Laptop GPU running at up to 175W, making it suited to demanding AAA gaming and GPU-intensive creative workloads. An 18-inch 2.5K 240Hz display and a liquid-metal thermal system complete a package aimed at buyers who refuse to compromise on frame rates or visual fidelity.
Why this product
Core Ultra 9 with 24 cores
The Intel Core Ultra 9 275HX runs at up to 5.4 GHz across 24 cores and 24 threads at up to 80W TDP, delivering sustained performance under heavy multi-threaded loads.
RTX 5080 at up to 175W TGP
The NVIDIA GeForce RTX 5080 Laptop GPU operates at ROG Boost speeds of 1550 MHz with 16GB of GDDR7 VRAM, enabling high-resolution gaming at high refresh rates.
2.5K 240Hz Nebula Display
The 18-inch IPS-level panel covers 100% DCI-P3, carries Pantone Validation and G-Sync support, and refreshes at 240Hz with a 3ms response time.
Liquid-metal thermal system
An end-to-end vapor chamber, Tri-Fan Technology, and Conductonaut Extreme liquid metal on both CPU and GPU keep thermals in check up to a 255W total system power ceiling in Manual mode.
Thunderbolt 5 and Wi-Fi 7
Two Thunderbolt 5 ports support DisplayPort, Power Delivery and G-SYNC, while Wi-Fi 7 (802.11be) triple-band wireless and Bluetooth 5.4 handle connectivity.
Tool-less upgradeable storage and RAM
Two DDR5 SO-DIMM slots support up to 64GB and two M.2 PCIe slots provide room to expand beyond the included 2TB PCIe 4.0 NVMe SSD, both accessible without tools.
- ProcessorIntel Core Ultra 9 275HX, up to 5.4 GHz, 24 cores
- GPUNVIDIA GeForce RTX 5080 Laptop GPU, 16GB GDDR7, 175W TGP
- Display18-inch 2.5K (2560×1600) 240Hz IPS-level, 100% DCI-P3
- RAM32GB DDR5-5600 (expandable to 64GB)
- Storage2TB PCIe 4.0 NVMe M.2 SSD
- Weight3.10 kg (6.83 lbs)
- WirelessWi-Fi 7 (802.11be) + Bluetooth 5.4
- OSWindows 11 Home
- SKUASU-3045
- EAN4711636485708
- Ships with Windows 11 Home; no additional operating system licence required.
- MUX Switch with NVIDIA Advanced Optimus lets it switch between the discrete RTX 5080 and integrated graphics for efficiency or performance.
- HDMI 2.1 FRL output and two Thunderbolt 5 ports support external monitors, including G-SYNC-capable displays.
- 2.5G LAN port for wired networking; Wi-Fi 7 triple-band for wireless.
- Requires a 380W AC adapter for full performance; the large power brick is a factor when travelling.
- Memory is expandable to 64GB via two DDR5 SO-DIMM slots, but additional RAM modules must be purchased separately.
Best for
- AAA gaming at high refresh rates — the RTX 5080 at 175W TGP and a 240Hz 2.5K display are matched to each other for high-fidelity, high-frame-rate play.
- GPU-accelerated creative work — 16GB GDDR7 VRAM and a 24-core CPU make it capable for 3D rendering, video editing and AI-assisted workflows.
- Users who upgrade their own hardware — tool-less access to two SO-DIMM slots and two M.2 slots means RAM and storage can be expanded without voiding access.
- Buyers who need wired and wireless flexibility — a 2.5G LAN port alongside Wi-Fi 7 covers both competitive and mobile use cases.
- Multi-monitor setups — HDMI 2.1 and two Thunderbolt 5 ports with DisplayPort support allow connection to multiple external displays.
Trade-offs
- Ultraportable users — at 3.10 kg (6.83 lbs) and requiring a 380W adapter, this is not a light daily commuter machine.
- All-day untethered use — the 90Wh battery is modest relative to the system's maximum 255W power envelope; sustained gaming will require mains power.
- Tight-budget buyers — flagship CPU, GPU and display specifications place this at the high end of the laptop market.
- Users needing a discrete webcam — the built-in camera is a 1080p IR unit; no external camera is included.
Dominate Windows 11 Home gaming with Intel® Core™ Ultra 9 processor 275HX and up to NVIDIA GeForce RTX™ 5080 Laptop GPU at 175W max TGP.
Up to Intel® Core™ Ultra 9 processor 275HX with 24 cores and 24 threads at up to 80W TDP. Up to NVIDIA GeForce RTX™ 5080 Laptop GPU and 175W max TGP and a MUX Switch with NVIDIA Advanced Optimus.
Power up
Game with confidence thanks to Windows 11 Home and an Intel® Core™ Ultra 9 processor 275HX. Backed up by the serious gaming muscle of up to NVIDIA® GeForce RTX™ 5080 Laptop GPU and 16GB of DDR5-5600 RAM, the 2025 Strix G18 has the perfect amount of power to keep you gaming at peak performance.
Dominant force
High-performance gaming machines need high-performance processors, and up to Intel® Core™ Ultra 9 processor 275HX absolutely delivers.
Next-gen graphics
Strix G18 boasts up to NVIDIA® GeForce RTX™ 5080 Laptop GPU, ensuring that you'll get incredible framerates and visuals in all the latest games.
To the limit
As a Strix machine, the G18 was designed from the ground up to push the limits of gaming performance. That means that we've engineered a thermal solution that gives the system room to breathe, and overclock, to its maximum potential. In Turbo mode, the G18 can reach a maximum system wattage of 230W, but when fully unlocked in Manual mode, 255W of total system power is yours to command.
An end-to-end vapor chamber paired with a sandwiched heatsink, Tri-Fan Technology, and Conductonaut Extreme liquid metal on CPU and GPU.
18-inch 2.5K 240Hz Nebula Display. Featuring a 16:10 aspect ratio, 100% DCI-P3 coverage, and ACR technology.
Up to 32GB DDR5 5600 RAM and 2TB PCIe Gen4 SSD, both easily upgradable thanks to a tool-less access design.
General
| Brand | ASUS |
|---|---|
| Model | G815LW-G18.U95080 |
| Color | Eclipse Gray |
| Operating System | Windows 11 Home |
Processor & Graphics
| Processor | Intel Core Ultra 9 275HX, 2.7 GHz base, up to 5.4 GHz, 24 cores, 24 threads, 36MB Cache, up to 80W TDP |
|---|---|
| NPU | Intel AI Boost NPU up to 13 TOPS |
| GPU | NVIDIA GeForce RTX 5080 Laptop GPU — ROG Boost: 1550 MHz at 175W (1500 MHz Boost Clock + 50 MHz OC, 150W + 25W Dynamic Boost) |
| GPU Memory | 16GB GDDR7 |
| GPU Switch | MUX Switch + NVIDIA Advanced Optimus |
Display & Storage
| Display Size | 18 inches |
|---|---|
| Resolution | 2560 × 1600 (WQXGA, 2.5K) |
| Aspect Ratio | 16:10 |
| Panel Type | IPS-level, Anti-glare |
| Refresh Rate | 240Hz |
| Response Time | 3ms |
| Color Coverage | 100% DCI-P3, Pantone Validated |
| Sync | G-Sync |
| Memory | 32GB DDR5-5600 SO-DIMM, dual channel; max 64GB |
| Memory Slots | 2x DDR5 SO-DIMM |
| Storage | 2TB PCIe 4.0 NVMe M.2 SSD |
| M.2 Slots | 2x M.2 PCIe |
Connectivity & Physical
| USB Type-A | 3x USB 3.2 Gen 2 Type-A (up to 10 Gbps) |
|---|---|
| Thunderbolt | 2x Thunderbolt 5 (DisplayPort / Power Delivery / G-SYNC) |
| Video Out | 1x HDMI 2.1 FRL |
| LAN | 1x 2.5G LAN |
| Audio | 1x 3.5mm Combo Audio Jack |
| Wireless | Wi-Fi 7 (802.11be) Triple Band |
| Bluetooth | 5.4 |
| Camera | 1080p FHD IR Camera with Windows Hello |
| Keyboard | Backlit Chiclet Keyboard, 4-Zone RGB |
| Battery | 90WHrs, 4-cell Li-ion |
| Power Adapter | 380W AC Adapter |
| Dimensions | 399 × 299 × 23.4–27.2 mm (15.71" × 11.77" × 0.92"–1.07") |
| Weight | 3.10 kg (6.83 lbs) |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.