Lenovo ThinkPad T440 vs Lenovo ThinkPad T450

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ThinkPad T440 compared with ThinkPad T450

	LenovoThinkPad T440	LenovoThinkPad T450
Overview
Released
Released	October 2013	February 2015
Display
Screen size
Screen size	14″	14″
Resolution
Resolution	1366 × 768 or 1600 × 900	1600 × 900
Brightness
Brightness	200 nits or 250 nits	250 nits
Touchscreen
Touchscreen	No or Yes	No
Display type
Display type	14-inch HD (1366 × 768, 200 nits, 350:1 contrast) or HD+ (1600 × 900, 250 nits, 400:1 contrast); optional ten-finger touch	HD (200 nits), HD+ (250 nits) or Full HD IPS (300 nits); optional ten-finger touch at 212.5 nits
Screen finish
Screen finish	Anti-glare	Anti-glare
Performance
Processor
Processor	Intel Core i5-4200U or Intel Core i5-4300U	Intel Core i5-5200U
CPU cores
CPU cores	2	2
CPU threads
CPU threads	4	4
Graphics
Graphics	Intel HD Graphics 4400	Intel HD Graphics 5500
Memory
Memory	4 GB or 8 GB	8 GB
Storage
Storage	256 GB to 500 GB (better)	256 GB
CPU
CPU	Fourth-generation Intel Core i3, i5 and i7 dual-core low-voltage processors; SoC platform	Fourth- or fifth-generation dual-core Intel Core processors; listed configuration uses fifth-generation Core i5
GPU
GPU	Integrated Intel HD Graphics 4400; optional NVIDIA GeForce GT 720M with 1 GB and Optimus	Listed configuration uses integrated Intel HD Graphics 5500; regional options vary
Memory type
Memory type	DDR3L-1600; one SO-DIMM socket, up to 8 GB, or 12 GB on selected models with 4 GB soldered	DDR3L-1600; two SO-DIMM sockets, up to 16 GB
Storage type
Storage type	Removable 2.5-inch SATA HDD, SSD or SSHD; optional M.2 SSD shares space with WWAN or smart card reader, depending on slot	2.5-inch SATA HDD, SSD or SSHD; optional M.2 SSD; listed configuration has a 256 GB SATA SSD (Notebookcheck)
Battery and size
Battery life (maker's claim)
Battery life (maker's claim)	Up to 8.6 hours	Up to 10.08 hours
Weight
Weight	1.72 kg (better)	1.73 kg
Thickness
Thickness	21 mm	21 mm
Width × depth
Width × depth	339 × 232.5 mm	339 × 232.5 mm
Battery life detail
Battery life detail	Optional internal 23.5 Wh battery; removable external 23.5 Wh, 47.5 Wh or 72 Wh battery; integrated graphics, internal plus 23.5 Wh external up to 8.6 hours, plus 47.5 Wh up to 12.9 hours, plus 72 Wh up to 17.2 hours; Optimus up to 7.7 / 11.6 / 15.4 hours; weight shown with internal and three-cell external batteries, non-touch	Optional internal 23 Wh and removable external 23, 48 or 72 Wh battery; internal plus 23 Wh external up to 10.08 hours, plus 48 Wh up to 14.78 hours, plus 72 Wh up to 19.78 hours; weight shown for non-touch with internal and three-cell external batteries
Charger
Charger	45 W; 65 W on optional GeForce GT 720M models	45 W or 65 W
Materials
Materials	Glass-fibre reinforced plastic	Glass-fibre reinforced lid and bottom; carbon-fibre reinforced lid on touch models
Colours
Colours	Black	Black
Connections
Ports
Ports	2 × USB-A, Ethernet, SD card slot, headphone jack	3 × USB-A, Ethernet, SD card slot, headphone jack
Wi-Fi
Wi-Fi	802.11b/g/n or 802.11a/b/g/n; optional 802.11ac	802.11b/g/n or 802.11a/b/g/n; optional 802.11ac
Bluetooth
Bluetooth	Optional Bluetooth 4.0	Optional Bluetooth 4.0
Webcam
Webcam	Optional 720p	Optional 720p
Operating system
Operating system	Windows	Windows
Port detail
Port detail	Two USB 3.0 (one Always On), VGA, Mini DisplayPort, Gigabit Ethernet, combo audio jack, SD/MMC/SDHC/SDXC reader, optional smart card and SIM slot; docking connector on integrated graphics models	Three USB 3.0, VGA, Mini DisplayPort, Gigabit Ethernet, combo audio, SD/MMC/SDHC/SDXC reader and docking connector; optional smart card and SIM slot
External displays
External displays	Three independent displays; Mini DisplayPort up to 3840 × 2160 at 30 Hz on integrated graphics; VGA up to 1920 × 1200 at 60 Hz; Optimus DisplayPort up to 2560 × 1600 at 60 Hz	Three independent displays; Mini DisplayPort up to 3840 × 2160 at 60 Hz, VGA up to 1920 × 1200 at 60 Hz
Keyboard
Keyboard	Six-row spill-resistant keyboard; TrackPoint; optional backlight	Six-row spill-resistant keyboard; optional backlight
Trackpad
Trackpad	UltraNav multi-touch touchpad; five buttons integrated into the clickpad	Multi-touch Mylar clickpad; TrackPoint with dedicated buttons
Speakers
Speakers	1 W × 2 stereo speakers	1 W × 2 stereo speakers
Microphones
Microphones	Dual-array microphone	Dual-array microphone
Biometrics
Biometrics	Optional swipe fingerprint reader; TPM 1.2	Optional swipe fingerprint reader; TPM 1.2