Lenovo ThinkPad X250 vs Lenovo ThinkPad X61

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ThinkPad X250 compared with ThinkPad X61

	LenovoThinkPad X250	LenovoThinkPad X61
Overview
Released
Released	February 2015	June 2007
Display
Screen size
Screen size	12.5″	12.1″
Resolution
Resolution	1366 × 768 (better)	1024 × 768
Panel
Panel	IPS LCD	–
Brightness
Brightness	300 nits (better)	150 nits
Touchscreen
Touchscreen	No	No
Display type
Display type	HD (200 nits), HD IPS (300 nits), or Full HD IPS (400 nits); touch IPS versions rated at 270 nits for HD and 360 nits for Full HD	12.1-inch 4:3 XGA TFT LCD with 300:1 maker contrast; native refresh and panel subtype unpublished in PSREF
Screen finish
Screen finish	Anti-glare	Anti-glare
Performance
Processor
Processor	Intel Core i5-5200U	Intel Core 2 Duo T7300
CPU cores
CPU cores	2	2
CPU threads
CPU threads	4	–
Graphics
Graphics	Intel HD Graphics 5500	Intel Graphics Media Accelerator X3100
Memory
Memory	8 GB (better)	1 GB
Storage
Storage	256 GB (better)	120 GB
CPU
CPU	Fourth- or fifth-generation dual-core Intel Core processors; listed configuration uses fifth-generation Core i5	Listed US 7675-4KU has dual-core Core 2 Duo T7300 at 2.00 GHz, 800 MHz bus and 4 MB L2 cache; later configurations added T7250, T7500, T8100 or T8300
GPU
GPU	Intel HD Graphics 5500 on fifth-generation models	Intel GMA X3100 integrated in GM965; external VGA only, no DVI output
Memory type
Memory type	DDR3L-1600; one SO-DIMM socket, up to 16 GB on fifth-generation processors or 8 GB on Core i5-4300U models	Listed 7675-4KU has 1 GB PC2-5300 DDR2-667 in one socket; two 200-pin SO-DIMM sockets, maker 4 GB maximum
Storage type
Storage type	SATA HDD, SSD or SSHD; optional M.2 SSD; listed configuration has 256 GB SSD (Notebookcheck)	Listed 7675-4KU has 120 GB 5400 rpm SATA 1.5 Gb/s hard drive; replaceable 9.5 mm disk with shock mount and Active Protection System; optical drive available through optional X6 UltraBase
Battery and size
Battery life (maker's claim)
Battery life (maker's claim)	Up to 10.7 hours	Up to 3.9 hours
Weight
Weight	1.42 kg	1.41 kg (better)
Thickness
Thickness	20.3 mm (better)	35 mm
Width × depth
Width × depth	305.5 × 208.5 mm	268 × 211 mm
Battery life detail
Battery life detail	Optional internal 23 Wh battery; removable external 23, 48 or 72 Wh battery; internal plus 23 Wh external up to 10.7 hours, plus 48 Wh up to 16 hours, plus 72 Wh up to 21.4 hours; weight shown with internal and three-cell external batteries, non-touch	Listed four-cell enhanced lithium-ion battery has maker maximum 3.9 hours; eight-cell up to 7.8 hours or eight-cell plus Extended Life Battery up to 10.7 hours. Headline starting weight 1.41 kg and depth 211 mm apply to four-cell without UltraBase; eight-cell starts at 1.63 kg and depth 238 mm. Maker height range 20–35 mm, maximum 35 mm listed
Charger
Charger	45 W	65 W AC adapter
Materials
Materials	Glass-fibre reinforced lid and bottom; carbon-fibre reinforced lid on touch models	Magnesium-alloy casing
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	Intel PRO/Wireless 3945ABG, 802.11a/b/g on listed US 7675-4KU
Bluetooth
Bluetooth	Optional Bluetooth 4.0	Bluetooth 2.0
Webcam
Webcam	Optional 720p	No built-in webcam listed
Operating system
Operating system	Windows	Windows
Port detail
Port detail	Two USB 3.0, VGA, Mini DisplayPort, Gigabit Ethernet, combo audio, SD/MMC/SDHC/SDXC reader and docking connector; optional smart card and SIM slot	Three USB 2.0, VGA, RJ-11 modem, Gigabit RJ-45, four-pin FireWire 400, SD slot, CardBus slot and separate microphone/headphone jacks; X6 UltraBase optional, with additional ports and Ultrabay Slim
External displays
External displays	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; optional backlight	89-key spill-resistant keyboard, ThinkVantage button and ThinkLight; maker specifies 18.5 mm pitch and 2.5 mm travel
Trackpad
Trackpad	Multi-touch Mylar clickpad; TrackPoint with dedicated buttons	No touchpad; TrackPoint with Press-to-Select and scroll function
Speakers
Speakers	1.5 W × 2 stereo speakers	Mono 0.5 W speaker with dedicated volume/mute buttons
Microphones
Microphones	Dual-array microphone	Internal microphone and separate microphone-input jack
Biometrics
Biometrics	Optional swipe fingerprint reader; TPM 1.2	Fingerprint reader on listed model; Atmel TPM 1.2, power-on, hard-drive and supervisor passwords