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- ROG Strix G18 G815 RTX 5090 (2026)
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Asus ROG Strix G18 G815 RTX 5090 (2026)
Asus ROG Strix G18 G815 RTX 5090 (2026) is a desktop replacement released in March 2026. Key specs: graphics card GeForce RTX 5090 Laptop, GPU power (TGP) 175 W, processor Core Ultra 9 290HX Plus, screen size 18″.
8.7Score
Graphics9.1
Overall performance9.6
Display8.3
Memory & storage5.1
Battery & portability2.3
Features & cooling7.5
price range—
- Released
- March 2026
- Brand
Asus- Popularity
- #480 of 1,575
- Series
- Asus ROG Strix G18 · 21 generations
- Model numbers
- G815
GeForce RTX 5090 LaptopGraphics card
175 WGPU power (TGP)
Core Ultra 9 290HX PlusProcessor
18″Screen size
300 HzRefresh rate
64 GBRAM (up to)
90 WhBattery capacity
3.5 kgWeight
Spec guide
How it ranks among desktop replacements of 2026
GPU power (TGP) · 175 WTop 14%Screen size · 18″Top 10%Refresh rate · 300 HzTop 4%RAM (up to) · 64 GBTop 38%Battery capacity · 90 WhTop 41%Weight · 3.5 kgBottom 9%
Compared with desktop replacements released in 2026. Bars show the share of models it beats.
compared with other desktop replacements
Why is ROG Strix G18 G815 RTX 5090 (2026) a good choice?
Geekbench 6 multi-core: 23,356better than 93% of desktop replacements
3DMark Steel Nomad Light: 30,794better than 90% of desktop replacements
Refresh rate: 300 Hzbetter than 86% of desktop replacements
GPU power (TGP): 175 Wbetter than 70% of desktop replacements
Video memory: 24 GBbetter than 90% of desktop replacements
CPU cores: 24better than 72% of desktop replacements
Weak points
Battery capacity: 90 Whworse than 92% of desktop replacements
Specifications
Full specifications
Graphics
- GPU maker
- NVIDIA
- GPU power (TGP)
- 175 W
- Video memory
- 24 GB
- GPU shader cores
- 10,496
- GPU compute (FP32)
- 51.4 TFLOPS
- 3DMark Steel Nomad Light
- 30,794
Processor
- CPU maker
- Intel
- CPU cores
- 24
- CPU threads
- 24
- Max CPU clock
- 5.5 GHz
- Processor options
- Core Ultra 9 290HX Plus
- Geekbench 6 multi-core
- 23,356
- Geekbench 6 single-core
- 3,484
- Cinebench 2024 multi-core
- 2,626
Display
- Screen size
- 18″
- Resolution
- 2560 × 1600
- Refresh rate
- 300 Hz
- Brightness
- 500 nits
- sRGB coverage
- 100%
- Response time
- 3 ms
- DCI-P3 coverage
- 100%
- Pixel density
- 168 ppi
- Aspect ratio
- 16:10
- G-Sync / FreeSync
- Yes
- Advanced Optimus
- No
- MUX switch
- Yes
- HDR
- Yes
- Touchscreen
- No
Memory & storage
- RAM (up to)
- 64 GB
- RAM (base)
- 16 GB
- RAM speed
- 5,600 MHz
- Max. supported RAM
- 64 GB
- RAM slots
- 2
- Upgradable RAM
- Yes
- SSD (up to)
- 4,096 GB
- SSD (base)
- 1,024 GB
- M.2 SSD slots
- 2
- SSD interface
- PCIe 4.0 x4
Battery & power
- Battery capacity
- 90 Wh
- Power adapter
- 380 W
- USB-C charging (Power Delivery)
- Yes
- USB-C charging power
- 100 W
Design & cooling
- Weight
- 3.5 kg
- Thickness
- 32 mm
- Width
- 399 mm
- Depth
- 294 mm
- Body material
- Plastic
- Colours
- Gray, Green
- Cooling fans
- 3
- Vapor chamber cooling
- Yes
- Liquid metal (CPU)
- Yes
Ports & wireless
- Thunderbolt or USB4
- Yes
- USB-C ports
- 2
- USB-A ports
- 3
- HDMI
- HDMI 2.1
- HDMI 2.1
- Yes
- (Mini) DisplayPort
- No
- Ethernet port
- Yes
- SD card reader
- No
- 3.5 mm audio jack
- Yes
- Wi-Fi standard
- Wi-Fi 7
- Bluetooth
- 5.4
Keyboard & camera
- Backlit keyboard
- Yes
- Numeric keypad
- Yes
- Key travel
- 1.7 mm
- Webcam
- 1,080p
- IR camera (face login)
- Yes
- Fingerprint reader
- No
Audio
- Speakers
- 2.0
- Dolby Atmos
- Yes
Specs are collected from manufacturers and open databases and normalised to one format; check details with the seller before you buy.
Compare
Compare ROG Strix G18 G815 RTX 5090 (2026) with
vs
Asus ROG Strix G18 G815 RTX 5090 (2026)vsAsus ROG Strix G18 G814 RTX 5070 (2025)8.74.5vs
Asus ROG Strix G18 G815 RTX 5090 (2026)vsAsus ROG Strix G18 G815 RTX 5080 (2025)8.77.8vs
Asus ROG Strix G18 G815 RTX 5090 (2026)vsMSI Raider 18 Max HX A2W RTX 5090 (2026)8.79.2vs
Asus ROG Strix G18 G815 RTX 5090 (2026)vsMSI Titan 18 HX Dragon Edition Draco Epic A2WJ RTX 5090 (2026)8.78.2vs
Asus ROG Strix G18 G815 RTX 5090 (2026)vsRazer Blade 18 RTX 5090 (2026)8.79.0vs
Asus ROG Strix G18 G815 RTX 5090 (2026)vsRazer Blade 18 RTX 5080 (2026)8.78.1In collections
Gaming laptops — CPU maker: Intel + video memory from 16 GB183Gaming laptops: Video memory from 12 GB + refresh rate from 240 hz188Gaming laptops — Video memory from 12 GB + Resolution class: QHD (1440p/1600p)189Gaming laptops — GPU power (TGP) from 140 W + Resolution class: QHD (1440p/1600p)195Gaming laptops: GPU power (TGP) from 140 W + screen size from 17.3″196Gaming laptops — Resolution class: QHD (1440p/1600p) + RAM (up to) from 64 GB201Gaming laptops: GPU power (TGP) from 140 W + refresh rate from 240 hz211Gaming laptops: Video memory from 12 GB + RAM (up to) from 64 GB215
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