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ASUS ROG Zephyrus G16 laptop in Eclipse Gray, thin clamshell form factor, matte finish

ASUS

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

SKU CH-3BVZ-8KWGV

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

  • ColorEclipse Gray
  • Operating SystemWindows 11 Pro
  • CPUIntel® Core Ultra 9-285H
  • Screen16" 2.5K
  • Memory32GB
  • Storage8 TB M.2 PCIe 4.0 x4 NVMe SSD
  • Intel Core Ultra 9 285H reaches 5.4 GHz turbo for demanding workloads
  • 16 inch OLED panel runs at 240 Hz for smooth motion
  • RTX 5090 with 24 GB GDDR7 drives high frame rates
  • 32 GB LPDDR5X at 7467 MT/s handles multitasking
  • Dual 4 TB NVMe SSDs give 8 TB total capacity

16″ 240 Hz OLED for creators and gamers

The ASUS ROG Zephyrus G16 GU605CX pairs a 16.0″ 2560 x 1600 OLED panel at 240 Hz with an Intel Core Ultra 9 285H processor and NVIDIA GeForce RTX 5090 graphics. Sixteen cores reach 5.4 GHz turbo while 32 GB of LPDDR5X 7467 memory and 8 TB of PCIe 4.0 NVMe storage handle heavy multitasking and large project files. Windows 11 Pro ships pre-installed.

Thermals and power in daily use

HIDevolution applies Thermal Grizzly Conductonaut on the CPU and Gelid GC Extreme on the GPU to lower peak temperatures under sustained loads. The 16-core 285H runs at a 2.7 GHz base with 24 MB cache, and the RTX 5090 carries 24 GB of GDDR7 video memory. The chassis measures 13.94″ x 9.69″ x 0.59″ ~ 0.65″ and weighs 4.08 lbs, keeping fan noise moderate during typical workflows.

What the builder upgrades change

Replacing the stock thermal interface materials with higher-conductivity compounds reduces thermal resistance on both processors, which helps maintain boost clocks longer. The dual 4 TB NVMe SSDs are installed and validated before shipment, eliminating the need for user storage expansion. A full quality-control pass updates BIOS and drivers, runs burn-in stress tests, and verifies keyboard, touchpad, ports and display before the laptop leaves the workshop.

Highlights

  • Intel Core Ultra 9 285H reaches 5.4 GHz turbo for demanding workloads
  • 16 inch OLED panel runs at 240 Hz for smooth motion
  • RTX 5090 with 24 GB GDDR7 drives high frame rates
  • 32 GB LPDDR5X at 7467 MT/s handles multitasking
  • Dual 4 TB NVMe SSDs give 8 TB total capacity

Specifications

BrandASUS
SeriesROG Zephyrus G16
ModelGU605CX-G16.U9X5090
Part NumberGU605CX-G16.U9X5090-HID5P
ColorEclipse Gray
Operating SystemWindows 11 Pro
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 do I install the 2 x 4 TB M.2 PCIe 4.0 x4 NVMe SSD modules, and what step do people get wrong?

The 8 TB total storage is already installed by the builder. No user installation is required for the NVMe drives.

What maintenance will the Gelid GC Extreme on the GPU and Thermal Grizzly Conductonaut on the CPU need later?

The thermal interface materials are applied during the build and are not user-serviceable. No scheduled replacement is expected.

At what point does the 240Hz OLED panel hit its thermal or power limit during sustained loads?

The 16.0 inch 2560 x 1600 display runs at 240 Hz. Sustained limits are managed by the cooling system with upgraded TIM on both CPU and GPU.

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