Dell XPS 13 L321X vs Dell XPS 16 9640

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XPS 13 L321X compared with XPS 16 9640

	DellXPS 13 L321X	DellXPS 16 9640
Overview
Released
Released	February 2012	February 2024
Display
Screen size
Screen size	13.3″	16.3″
Resolution
Resolution	1366 × 768	1920 × 1200 or 3840 × 2400 (better)
Panel
Panel	–	IPS LCD or OLED
Refresh rate
Refresh rate	–	120 Hz or 90 Hz
Brightness
Brightness	300 nits	500 nits or 400 nits (better)
Touchscreen
Touchscreen	No	No or Yes
Display type
Display type	HD WLED LCD; hardened edge-to-edge Corning Gorilla Glass. Maker does not publish panel technology or refresh rate	FHD+ (1920 × 1200) WLED, non-touch, anti-glare, 30–120 Hz; or UHD+ (3840 × 2400) OLED touchscreen with passive pen support, anti-reflective and anti-smudge, 48–90 Hz
Pixel density
Pixel density	–	139 ppi (LCD); 278.1 ppi (OLED)
Colour range
Colour range	–	100% sRGB (LCD); 100% DCI-P3 (OLED)
Screen finish
Screen finish	Glossy glass surface	Anti-glare (LCD); anti-reflective, anti-smudge (OLED)
Display features
Display features	Initial Sandy Bridge L321X screen; later Ivy Bridge and Full HD revisions are separate. Notebookcheck measured 276.7 cd/m² average brightness and 162:1 contrast on its pre-production unit	2000:1 contrast, 35 ms response (LCD); OLED 400 nits typical, 1,000,000:1 contrast, 1 ms typical response; Eyesafe hardware low blue light
Performance
Processor
Processor	Intel Core i5-2467M	Intel Core Ultra 7 155H or Intel Core Ultra 9 185H
CPU cores
CPU cores	2	16
CPU threads
CPU threads	4	22
Graphics
Graphics	Intel HD Graphics 3000	Intel Arc Graphics or NVIDIA GeForce RTX 4070
AI engine (NPU)
AI engine (NPU)	–	11 TOPS
Memory
Memory	4 GB	16 GB or 64 GB (better)
Storage
Storage	128 GB to 256 GB	512 GB to 4 TB (better)
CPU
CPU	Second-generation Intel Core i5-2467M or Core i7-2637M. Listed i5 configurations are the February 2012 US options documented by Laptop Mag; i7 was paired with 256 GB storage	Intel Core Ultra 7 155H (up to 4.8 GHz), Core Ultra 7 165H (up to 5 GHz) or Core Ultra 9 185H (up to 5.1 GHz); 16 cores, 22 threads; up to 55 W (integrated graphics) or 20 W + 60 W CPU and GPU in Ultra Performance mode
GPU
GPU	Integrated Intel HD Graphics 3000; no dedicated graphics option	Intel Arc Graphics; or NVIDIA GeForce RTX 4050 (6 GB GDDR6), RTX 4060 (8 GB GDDR6) or RTX 4070 (8 GB GDDR6)
AI engine
AI engine	–	Intel AI Boost NPU
Memory type
Memory type	4 GB DDR3-1333, soldered and not upgradeable	LPDDR5X, soldered; 16 GB at 6400 MT/s (Intel Arc); 16, 32 or 64 GB at 6400 MT/s (RTX 4050 and 4060); 32 or 64 GB at 7467 MT/s (RTX 4070)
Storage type
Storage type	128 GB or 256 GB mSATA solid-state drive; replacement procedure in Dell's owner manual	One M.2 slot; 512 GB or 1 TB M.2 2230, or 1, 2 or 4 TB M.2 2280, PCIe Gen 4 NVMe SSD
Battery and size
Battery capacity
Battery capacity	47 Wh	99.5 Wh (better)
Weight
Weight	1.35 kg (better)	2.13 kg
Thickness
Thickness	18.2 mm (better)	18.7 mm
Width × depth
Width × depth	316 × 205 mm	358.18 × 240.05 mm
Battery life detail
Battery life detail	Built-in six-cell battery; launch claim up to eight hours 53 minutes, with usage conditions affecting runtime. Regulatory sheet gives 1.35 kg depending on installed options and 6.0–18.2 mm height; launch release instead states starting weight 1.36 kg and rounded 6–18 mm dimensions	99.5 Wh 6-cell lithium-ion
Charger
Charger	45 W AC adapter	130 W USB-C adapter
Fast charging
Fast charging	–	ExpressCharge; full charge in about 2 hours with the laptop off
Materials
Materials	Machined aluminium lid and carbon-fibre composite base	CNC-machined aluminium; Gorilla Glass 3
Colours
Colours	–	Graphite or Platinum
Connections
Ports
Ports	2 × USB-A, headphone jack	3 × Thunderbolt 4, microSD slot, headphone jack
Wi-Fi
Wi-Fi	Intel Centrino Advanced-N 6230, Wi-Fi a/g/n	Wi-Fi 7
Bluetooth
Bluetooth	Bluetooth 3.0	5.4
Webcam
Webcam	1.3 MP with dual-array digital microphones	1080p with IR
Operating system
Operating system	Windows	Windows
Port detail
Port detail	One USB 3.0 Type-A, one USB 2.0 Type-A with PowerShare, Mini DisplayPort and combined headphone/microphone jack. No HDMI, Ethernet or card reader	3 × Thunderbolt 4 USB-C with USB4, DisplayPort and Power Delivery (RTX 4070 models have 2 × Thunderbolt 4 on the left and 1 × USB 3.2 Gen 2 USB-C on the right); microSD card reader (v6.0); 3.5 mm headset jack; no lock slot
Keyboard
Keyboard	Full-size backlit chiclet keyboard	Backlit zero-lattice keyboard; capacitive touch function row; Copilot key
Trackpad
Trackpad	Glass touchpad with integrated buttons and multi-touch gestures	Seamless glass haptic touchpad, 148 × 90 mm
Speakers
Speakers	High-definition audio with Waves MaxxAudio 4	Quad speakers (two woofers at 3 W, two tweeters at 2 W)
Microphones
Microphones	–	Digital-array microphones
Biometrics
Biometrics	–	IR camera for Windows Hello face recognition; fingerprint reader in the power button