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Grey aluminium gaming laptop, 16 inch OLED display, slim profile

ASUS

ASUS ROG Zephyrus G16 GU605CX Grey 16" 2.5K 240Hz OLED Ultra 9 285H RTX 5090 32GB 4TB

SKU CH-QK9T-K5MHV

A 16-inch 2.5K 240Hz OLED gaming laptop with an Intel Core Ultra 9 285H processor, RTX 5090 graphics, 32GB LPDDR5X memory and a 4TB NVMe SSD

  • Screen size16.0 in (40.6 cm)
  • ProcessorIntel Core Ultra 9 (Series 2)
  • Graphics processorGeForce RTX 5090 Laptop GPU
  • Memory size32 GB
  • Storage drive4 TB M.2 PCIe 4.0 x4 NVMe SSD
  • Display resolution2560 × 1600

Color Eclipse Gray

Operating System Windows 11 Pro

GPU GeForce RTX 5090 Laptop GPU

Memory 32GB

SSD 4 TB

  • 5K 240Hz OLED display delivers vivid motion at 2560 x 1600
  • Ultra 9 285H 16-core processor reaches 5.4 GHz turbo for heavy workloads
  • RTX 5090 with 24 GB GDDR7 powers high-frame-rate gaming and creative tasks
  • 32 GB LPDDR5X 7467 memory runs demanding apps and multitasking smoothly
  • 4 TB PCIe 4.0 NVMe SSD provides fast boot and load times for large libraries

Compact 16" OLED Gaming Laptop

The ASUS ROG Zephyrus G16 GU605CX packs a 16-inch 2.5K 240Hz OLED panel into a chassis measuring 13.94 by 9.69 by 0.59 to 0.65 inches and weighing 4.08 lbs. It runs on an Intel Core Ultra 9 285H 16-core processor with a 5.4 GHz max turbo and an NVIDIA GeForce RTX 5090 GPU with 24 GB GDDR7. Windows 11 Pro is pre-installed.

For Mobile Power Users, Not Desktop Replacements

This suits creators and gamers who need a colour-accurate 2560 x 1600 OLED screen and high frame rates in a thin 16-inch form factor. The 32 GB LPDDR5X memory is soldered, so buyers who want user-upgradable RAM should look elsewhere. The 4 TB PCIe 4.0 x4 NVMe SSD offers ample fast storage for large project libraries.

Build-Ready With Premium Thermal Prep

The system arrives with Gelid GC Extreme on the GPU and Conductonaut on the CPU already applied, reducing the need for immediate repasting. Dual-channel LPDDR5X at 7467 MT/s feeds the CPU and integrated graphics without extra modules. A single M.2 slot holds the 4 TB drive; expansion depends on that slot’s availability. The 240 Hz OLED panel drives high-refresh gaming without an external monitor.

How it compares

Measured against everything we stock in Gaming Laptop Computers, at today’s prices. Recalculated every night.

Price $4,532.99
Pricier than about 90% of the 5,382 comparable items (median $1,978.99).
Screen size 16.0 in (40.6 cm)
Typical for this category: the median of 5,361 items is 16 in.
Refresh frequency 240 Hz
Higher than about 70% of the 2,443 comparable items (median 165 Hz).

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Specifications

Product
Brand nameASUS
Product lineROG Zephyrus G16
Model nameGU605CX-G16.U9 × 5090
Part numberGU605CX-G16.U9 × 5090-HID2P
Product colorEclipse Gray
Design styleThin and Light
Product typeGaming & Entertainment
Recommended useConsumer
Processor
ProcessorIntel® Core Ultra 9-285H
Processor modelIntel Core Ultra 9 285H
CPU cores16-core (8P+8E) Processor
Turbo clock speed5.4 GHz
Processor codenameArrow Lake
L3 cache size24 MB
Memory
Memory size32 GB
RAM type and speedLPDDR5X 7467
Memory configuration32 GB onboard
Maximum supported memory32 GB
Storage
Storage drive4 TB M.2 PCIe 4.0 x4 NVMe SSD
SSD storage4 TB
Hard driveNo
Storage configuration4 TB M.2 PCIe 4.0 x4 NVMe SSD
Display
Screen size16.0 in (40.6 cm)
Display resolution2560 × 1600
Refresh frequency240 Hz
Touch inputNo
Display16 in 2.5K
Display format2.5K
Screen features2.5K WQXGA 240 Hz OLED
Graphics
Graphics processorGeForce RTX 5090 Laptop GPU
Video RAM24 GB
GPU modelNVIDIA® GeForce® RTX™ 5090
Graphics typeDedicated Card
Audio & video
SoundSmart Amp Technology, Dolby Atmos, AI noise-canceling technology, Hi-Res certification (for headphone), Built-in 3-microphone array
Speakers4-speaker (dual-force woofer) system with Smart Amplifier Technology, 2 Tweeters
Web camera1080P FHD IR Camera for Windows Hello
Connectivity
Wi-Fi standardWi-Fi 7
Wi-FiWi-Fi 7(802.11be) (Triple band) 2 × 2
Bluetooth supportBluetooth® 5.4
Ports & slots
USB ports2x USB 3.2 Gen 2 Type-A, 1x USB 3.2 Gen 2 Type-C support DisplayPort™ / power delivery / G-SYNC
Thunderbolt ports1x Thunderbolt™ 4 support DisplayPort™ / power delivery
HDMI ports1x HDMI 2.1 FRL
Audio jacks3.5 mm Combo Audio Jack
Memory card readerSD (UHS-II, 312 MB/s)
Power
Power adapterRectangle Conn, 240 W AC Adapter, Output: 20 V DC, 12A, 240 W, Input: 100 to 240C AC 50/60 Hz universal
Battery pack90WHrs, 4S1P, 4-cell Li-ion
Size & build
Overall dimensions13.94 in × 9.69 in × 0.59 in ~ 0.65 in
Product weight4.08 lb (1.85 kg)
Software
Operating systemWindows 11 Pro
More details
Pointing deviceYes
KeyboardBacklit Chiclet Keyboard 1-Zone RGB
Keyboard backlightBacklit

Other versions of this model

5 more in the same range

Questions about this item

Does the laptop need an external power adapter to run the RTX 5090 and Ultra 9 285H at full speed?

Yes, the 240 W power adapter included with the GU605CX supplies the 5090 and the 285H with the power they need for 5.4 GHz turbo and 24 GB GDDR7 operation.

Can I keep using my existing PCIe 3.0 NVMe drive alongside the 4 TB PCIe 4.0 SSD that comes installed?

The chassis provides a second M.2 slot that accepts PCIe 3.0 or 4.0 NVMe drives, so your current drive can stay as extra storage.

How do I verify the 240 Hz OLED panel is actually running at 240 Hz after setup?

Open Windows Settings > System > Display > Advanced display and confirm the refresh rate dropdown shows 240 Hz for the 2560 x 1600 panel.

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