ASUS Zenbook DUO (UX8407) vs ASUS Zenbook S14 (UX5406, 2024)

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Zenbook DUO (UX8407) compared with Zenbook S14 (UX5406, 2024)

	ASUSZenbook DUO (UX8407)	ASUSZenbook S14 (UX5406, 2024)
Overview
Released
Released	February 2026	September 2024
Display
Screen size
Screen size	14″	14″
Resolution
Resolution	2880 × 1800	2880 × 1800
Panel
Panel	OLED	OLED
Refresh rate
Refresh rate	144 Hz (better)	120 Hz
Brightness
Brightness	500 nits (better)	400 nits
HDR peak brightness
HDR peak brightness	1,000 nits (better)	500 nits
Touchscreen
Touchscreen	Yes	Yes
Display type
Display type	Two 14-inch 3K ASUS Lumina Pro OLED touch screens, 16:10, stylus support	3K (2880 × 1800) OLED touchscreen with stylus support, or WUXGA (1920 × 1200) 60 Hz non-touch OLED; 16:10, 0.2 ms, 1,000,000:1, 1.07 billion colours
Colour range
Colour range	100% DCI-P3	100% DCI-P3
Screen finish
Screen finish	Anti-reflection coating (65% less reflection)	Anti-glare, low-reflection (ASUS UK models)
Display features
Display features	0.2 ms response; 1,000,000:1 contrast; VESA DisplayHDR True Black 1000; 1.07 billion colours; PANTONE Validated; 93% screen-to-body ratio; E-Reading mode	VESA DisplayHDR True Black 500; Pantone Validated; TÜV Rheinland-certified low blue light; SGS Eye Care Display; 90% screen-to-body ratio
Performance
Processor
Processor	Intel Core Ultra 9 386H, Intel Core Ultra X9 378H or Intel Core Ultra X9 388H	Intel Core Ultra 5 226V, Intel Core Ultra 7 256V, Intel Core Ultra 7 258V or Intel Core Ultra 9 288V
CPU cores
CPU cores	16	8
CPU threads
CPU threads	16	8
Graphics
Graphics	Intel Graphics or Intel Arc B390 GPU	Intel Arc 130V or Intel Arc 140V
AI engine (NPU)
AI engine (NPU)	50 TOPS (better)	40 TOPS, 47 TOPS or 48 TOPS
Memory
Memory	32 GB	16 GB or 32 GB
Storage
Storage	1 TB to 2 TB (better)	512 GB to 1 TB
CPU
CPU	Core Ultra X9 388H or 378H, Core Ultra X7 358H or Core Ultra 9 386H with 4 P-cores, 8 E-cores and 4 LP E-cores (18 MB cache); Core Ultra 7 355 with 4 P-cores and 4 LP E-cores (12 MB cache)	Intel Core Ultra 5 226V, Core Ultra 7 256V or 258V, or Core Ultra 9 288V; 8 cores, 8 threads; up to 28 W CPU TDP
GPU
GPU	Intel Arc B390 GPU (Core Ultra X7 and X9) or Intel Graphics, integrated	Intel Arc Graphics (Arc 130V or 140V)
AI engine
AI engine	Copilot+ PC; Intel NPU up to 50 TOPS	Intel AI Boost NPU, 40 to 48 TOPS depending on processor
Memory type
Memory type	LPDDR5X on board, 16 or 32 GB, not upgradable	LPDDR5X on the processor package; 16 or 32 GB
Storage type
Storage type	One M.2 2280 PCIe 4.0 x4 slot; 512 GB, 1 TB or 2 TB NVMe SSD	M.2 2280 PCIe 4.0 x4 NVMe SSD, 512 GB or 1 TB
Cooling
Cooling	–	Ultra-slim vapour chamber with dual IceBlade fans; under 25 dB ambient mode
Battery and size
Battery life (maker's claim)
Battery life (maker's claim)	Up to 32 hours	–
Battery capacity
Battery capacity	99 Wh (better)	72 Wh
Weight
Weight	1.65 kg	1.2 kg (better)
Thickness
Thickness	23.4 mm	12.9 mm (better)
Width × depth
Width × depth	310.1 × 208.6 mm	310.3 × 214.7 mm
Battery life detail
Battery life detail	99 Wh, 4-cell Li-ion; 1080p video up to 32 hr (one screen) or 18 hr (two screens); web browsing up to 18 hr (one screen) or 12 hr (two screens); ASUS test at 150 nits and 60 Hz	72 Wh, 4-cell Li-ion
Charger
Charger	100 W USB-C adapter; not included in every country	65 W USB-C; inclusion varies by country
Fast charging
Fast charging	60% in 49 minutes	–
Materials
Materials	Ceraluminum chassis, hinge and kickstand; MIL-STD-810H tested	Ceraluminum lid, aluminium body
Colours
Colours	Moher Gray	Zumaia Gray; Scandinavian White
Connections
Ports
Ports	2 × Thunderbolt 4, USB-A, HDMI, headphone jack	2 × Thunderbolt 4, USB-A, HDMI, headphone jack
Wi-Fi
Wi-Fi	Wi-Fi 7	Wi-Fi 7
Bluetooth
Bluetooth	5.4	5.4
Webcam
Webcam	FHD with IR	1080p with IR
Operating system
Operating system	Windows	Windows
Port detail
Port detail	2 × Thunderbolt 4 (40 Gbps, display and power delivery); USB-A 10 Gbps; HDMI 2.1 FRL; 3.5 mm combo audio jack	2 × Thunderbolt 4 (40 Gbps) with display and power delivery; USB 3.2 Gen 2 Type-A (10 Gbps); HDMI 2.1 TMDS; 3.5 mm combo audio jack
External displays
External displays	Two 4K 60 Hz or one 8K 60 Hz over Thunderbolt 4	–
Keyboard
Keyboard	Detachable Bluetooth keyboard, backlit, 1.7 mm key travel, Copilot key; attaches magnetically to the lower screen with pogo pins	Backlit chiclet keyboard, 1.1 mm key travel, Copilot key
Trackpad
Trackpad	ErgoSense precision touchpad on the keyboard	Enlarged touchpad (127 × 79 mm) with Smart Gesture
Speakers
Speakers	Six speakers with dedicated tweeters and woofers, Smart Amp	4 speakers, Harman Kardon certified
Microphones
Microphones	Array microphone	2 array microphones
Biometrics
Biometrics	IR camera for Windows Hello	AiSense IR camera for Windows Hello
In the box
In the box	ASUS Pen with wireless charger in some countries	–