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ASUS ROG Zephyrus G16 laptop in Eclipse Gray finish

ASUS

ASUS ROG Zephyrus G16 GU605CX 16" 240Hz OLED Ultra 9-285H RTX 5090 32GB 8TB gaming laptop

SKU CH-KHJX-4GP05

A 16-inch 240Hz OLED gaming laptop with an Intel Core Ultra 9 285H processor, RTX 5090 graphics with 24GB GDDR7, 32GB LPDDR5X memory, and 8TB NVMe storage

  • ColorEclipse Gray
  • Operating SystemWindows 11 Home
  • CPUIntel® Core Ultra 9-285H
  • Screen16" 2.5K
  • Memory32GB
  • Storage8 TB M.2 PCIe 4.0 x4 NVMe SSD
  • 240 Hz OLED display renders fast motion with 2560 x 1600 clarity
  • Ultra 9 285H 16-core CPU reaches 5.4 GHz turbo for heavy workloads
  • RTX 5090 with 24 GB GDDR7 drives high-framerate 2.5K gaming
  • 32 GB LPDDR5X 7467 memory keeps multitasking responsive
  • 8 TB NVMe storage loads games and projects in seconds

16-inch 240Hz OLED gaming laptop

The ASUS ROG Zephyrus G16 GU605CX pairs a 16-core Intel Core Ultra 9-285H processor with an NVIDIA GeForce RTX 5090 graphics card. 32 GB of LPDDR5X memory and 8 TB of NVMe storage support demanding creative and gaming workloads. A 16.0-inch 2560 x 1600 OLED panel refreshes at 240 Hz for smooth motion. The system ships with Windows 11 Home installed.

Factory-applied thermal upgrades and sealed memory

HIDevolution applies Thermal Grizzly Conductonaut on the CPU and Gelid GC Extreme on the GPU before shipment. The 32 GB LPDDR5X 7467 dual-channel memory is soldered to the board and cannot be upgraded by the user. Two 4 TB M.2 PCIe 4.0 x4 NVMe SSDs occupy the available storage slots. Buyers should verify the drive configuration meets future capacity needs before purchase.

OLED panel and mobile GPU constraints

The 240 Hz OLED display delivers per-pixel lighting but sustained full-screen brightness may be limited to protect the organic material. The mobile RTX 5090 with 24 GB GDDR7 operates within a thin 0.59 to 0.65 inch chassis, so thermal headroom is lower than desktop equivalents. PCIe 4.0 x4 NVMe storage provides fast sequential speeds, yet the interface caps peak throughput below newer PCIe 5.0 designs.

Highlights

  • 240 Hz OLED display renders fast motion with 2560 x 1600 clarity
  • Ultra 9 285H 16-core CPU reaches 5.4 GHz turbo for heavy workloads
  • RTX 5090 with 24 GB GDDR7 drives high-framerate 2.5K gaming
  • 32 GB LPDDR5X 7467 memory keeps multitasking responsive
  • 8 TB NVMe storage loads games and projects in seconds

Specifications

BrandASUS
SeriesROG Zephyrus G16
ModelGU605CX-G16.U9X5090
Part NumberGU605CX-G16.U9X5090-HID5
ColorEclipse Gray
Operating SystemWindows 11 Home
CPUIntel® Core Ultra 9-285H
Screen16" 2.5K
Memory32GB
Storage8 TB M.2 PCIe 4.0 x4 NVMe SSD
Graphics CardNVIDIA® GeForce® RTX™ 5090
Video Memory24GB
Dimensions (W x D x H)13.94" x 9.69" x 0.59" ~ 0.65"
Weight4.08 lbs
CPU TypeIntel Core Ultra 9 (Series 2)
Processor NameIntel Core Ultra 9 285H
Number of Cores16-core (8P+8E) Processor
Turbo FrequencyMax Turbo Frequency 5.4 GHz
CPU L3 Cache24 MB
Screen Size16.0"
TouchscreenNo
Display Type2.5K
Resolution2560 x 1600
Bezel Design100% DCI-P3
Display Features2.5K WQXGA 240Hz OLED
GPU/VPUGeForce RTX 5090 Laptop GPU
Graphic TypeDedicated Card
SSD8TB
HDDNo
Storage Spec2 x 4 TB M.2 PCIe 4.0 x4 NVMe SSD
Memory SpeedLPDDR5X 7467
Memory Spec32 GB onboard
Max Memory Supported32GB
WLANWi-Fi 7(802.11be) (Triple band) 2*2
BluetoothBluetooth® 5.4
USB2x USB 3.2 Gen 2 Type-A, 1x USB 3.2 Gen 2 Type-C support DisplayPort™ / power delivery / G-SYNC
Thunderbolt 3240Hz
ThunderboltWi-Fi 7
HDMI1x HDMI 2.1 FRL
Ethernet1x Thunderbolt™ 4 support DisplayPort™ / power delivery
Audio Ports3.5mm Combo Audio Jack
AudioSmart Amp Technology, Dolby Atmos, AI noise-canceling technology, Hi-Res certification (for headphone), Built-in 3-microphone array
Speaker4-speaker (dual-force woofer) system with Smart Amplifier Technology, 2 Tweeters
Virtual Reality ReadyArrow Lake
TouchpadYes
KeyboardBacklit Chiclet Keyboard 1-Zone RGB
Backlit KeyboardBacklit
Webcam1080P FHD IR Camera for Windows Hello
Card ReaderSD (UHS-II, 312MB/s)
StyleThin and Light
TypeGaming & Entertainment
UsageConsumer
AC Adapter/ChargerRectangle Conn, 240W AC Adapter, Output: 20V DC, 12A, 240W, Input: 100~240C AC 50/60Hz universal
Battery90WHrs, 4S1P, 4-cell Li-ion

Questions about this item

How can I confirm the 240Hz OLED panel is running at its native 2560 x 1600 resolution after setup?

Open Windows Display Settings and verify the resolution shows 2560 x 1600 with the refresh rate set to 240 Hz. The ROG Armoury Crate overlay can also display the active panel mode in real time.

What components are included in the box and which upgrades are pre-installed versus user-supplied?

The laptop ships with the 16-inch WQXGA 240Hz OLED display, Intel Core Ultra 9 285H processor, RTX 5090 with 24 GB GDDR7, 32 GB LPDDR5X 7467 memory, and dual 4 TB PCIe 4.0 NVMe SSDs totalling 8 TB. Windows 11 Home is pre-loaded. No additional parts are required.

Which configuration should I choose if I need the highest graphics memory and fastest storage this model offers?

This SKU is a single fixed configuration: RTX 5090 with 24 GB GDDR7, 32 GB LPDDR5X 7467 RAM, and 2 x 4 TB PCIe 4.0 NVMe SSDs. There are no alternate GPU, memory or capacity options to select.

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