ASUS Zenbook Duo UX840 Intel Core Ultra 9 285H 32GB RAM 2TB SSD (90NB14X1-M00670)

The ASUS Zenbook Duo UX840 (90NB14X1-M00670) is a high-end dual-screen 14-inch laptop engineered for creative professionals, AI workloads, and multitasking enthusiasts. Powered by the Intel Core Ultra 9 285H processor with integrated Intel Arc Graphics and AI Boost NPU, this configuration includes 32GB LPDDR5X RAM and a 2TB PCIe 4.0 NVMe SSD for extreme performance and storage capacity. Featuring dual ASUS Lumina OLED displays, a detachable Bluetooth keyboard, and a slim, portable 1.35 kg design, the Zenbook Duo UX840 is ideal for designers, content creators, and power users seeking productivity and innovation in one system.

Product Features

Intel Core Ultra 9 285H Performance

The flagship Intel Core Ultra 9 285H processor offers 16 cores (6 Performance, 8 Efficient, 2 Low Power Efficient) with a maximum turbo frequency of 5.4 GHz. Integrated Intel Arc 140T graphics with 8 Xe2-cores and the Intel AI Boost NPU delivering up to 13 TOPS ensures smooth AI-accelerated tasks, content creation, and heavy multitasking.

32GB LPDDR5X Memory

High-speed 32GB LPDDR5X RAM (7467 MHz, soldered/non-upgradable) provides ample bandwidth for large-scale applications, simultaneous multitasking, and AI-enhanced workflows.

2TB PCIe 4.0 NVMe SSD

The 2TB M.2 NVMe PCIe 4.0 SSD offers high-speed storage for extensive projects, fast boot times, and rapid file access. It is the only user-upgradeable component in the system.

Dual 14-Inch ASUS Lumina OLED Displays

Two 14-inch 3K (2880 x 1800) OLED touchscreens provide a 16:10 aspect ratio, 120Hz refresh rate, and 0.2ms response time. The displays cover 100% DCI-P3 color gamut, are Pantone validated, and VESA DisplayHDR True Black 500 certified. Gorilla Glass protection ensures durability and scratch resistance.

Revolutionary Dual-Screen Design

The innovative dual-screen layout increases workspace efficiency and multitasking productivity. A detachable backlit Bluetooth keyboard and integrated kickstand enable ergonomic use, content creation, and collaboration.

Advanced Cooling System

A specialized heat spreader between the motherboard and OLED panels, along with a high-efficiency thermal design, maintains up to 35W sustained TDP performance while keeping the system cool and quiet.

Long-Lasting Battery with Fast Charging

A 75Wh 4-cell battery supports up to 13 hours of use depending on workload. Fast charging allows the battery to reach 60% in approximately 49 minutes using the included 65W USB-C charger.

Connectivity and Ports

• Wireless: Wi-Fi 7 (802.11be) and Bluetooth 5.4
• Physical Ports:
  • 2 x Thunderbolt 4 (40Gbps, display/power delivery)
  • 1 x USB 3.2 Gen 1 Type-A
  • 1 x HDMI 2.1
  • 1 x 3.5mm combo audio jack
  • MicroSD card reader included

Audio and Collaboration

Harman Kardon-certified Smart Amp speakers with AI noise cancellation provide immersive sound and clear conferencing audio. The dual-screen setup enhances productivity and creative collaboration.

Accessories Included

• Detachable Bluetooth keyboard
• ASUS Pen 2.0 (SA203H-MPP2.0)
• Laptop sleeve
• 65W USB-C charger

Product Specifications

• Model: ASUS Zenbook Duo UX840 (90NB14X1-M00670)
• Processor: Intel Core Ultra 9 285H, 16 cores, max turbo 5.4 GHz, integrated Intel Arc 140T graphics, AI Boost NPU
• Memory: 32GB LPDDR5X (soldered, non-upgradable)
• Storage: 2TB M.2 NVMe PCIe 4.0 SSD
• Display: Dual 14-inch 3K OLED touchscreens (2880 x 1800), 120Hz, 0.2ms response
• Color Gamut: 100% DCI-P3, Pantone Validated
• Brightness: 400 nits SDR, 500 nits HDR peak
• Contrast Ratio: 1,000,000:1
• Screen Protection: Corning Gorilla Glass
• Chassis: Aluminum, 1.35 kg (1.65 kg with keyboard), slim design with integrated kickstand
• Keyboard: Detachable backlit Bluetooth keyboard
• Battery: 75Wh 4-cell Li-ion, fast charging to 60% in ~49 minutes
• Cooling: Advanced heat spreader system, dual-screen optimized
• Ports: 2x Thunderbolt 4, 1x USB 3.2 Gen 1 Type-A, 1x HDMI 2.1, 1x 3.5mm combo audio, MicroSD reader
• Wireless: Wi-Fi 7 (802.11be), Bluetooth 5.4
• Audio: Harman Kardon Smart Amp speakers with AI noise cancellation
• Durability: US MIL-STD 810H