IBM ThinkPad T42 vs Lenovo ThinkPad X1 Carbon Gen 14

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ThinkPad T42 compared with ThinkPad X1 Carbon Gen 14

	IBMThinkPad T42	LenovoThinkPad X1 Carbon Gen 14
Overview
Released
Released	May 2004	March 2026
Display
Screen size
Screen size	14.1″	14″
Resolution
Resolution	1400 × 1050	1920 × 1200 (better)
Panel
Panel	–	IPS LCD
Refresh rate
Refresh rate	–	60 Hz
Brightness
Brightness	150 nits	500 nits (better)
Touchscreen
Touchscreen	No	Yes
Display type
Display type	Listed US 2373-3UU has 14.1-inch active-matrix TFT SXGA+ LCD, 150 nits; native refresh and panel subtype unpublished. Other original models offered 14.1-inch XGA, or a separate 15-inch chassis	WUXGA IPS, 16:10; in-cell touch (low power) or on-cell touch with ThinkPad Privacy Guard
Colour range
Colour range	–	100% sRGB
Screen finish
Screen finish	–	Anti-glare
Display features
Display features	–	1,500:1 contrast; 85° viewing angles; Eyesafe Certified 2.0; 88.8% screen-to-body ratio; Privacy Guard with Privacy Alert on Privacy Guard models
Performance
Processor
Processor	Intel Pentium M 735	Intel Core Ultra 5 325 or Intel Core Ultra 7 356H
CPU cores
CPU cores	1	8 or 16
CPU threads
CPU threads	1	8 or 16
Graphics
Graphics	ATI Mobility Radeon 9600	Intel Graphics
AI engine (NPU)
AI engine (NPU)	–	47 TOPS or 50 TOPS
Memory
Memory	512 MB	32 GB (better)
Storage
Storage	40 GB	256 GB to 1 TB (better)
CPU
CPU	Listed Pentium M 735 at 1.7 GHz, 400 MHz system bus and 2 MB on-die ECC L2 cache; other original configurations used Pentium M 745 at 1.8 GHz	Core Ultra 5 325 with 4 P-cores and 4 LP E-cores (12 MB cache); Core Ultra 7 356H with 4 P-cores, 8 E-cores and 4 LP E-cores (18 MB cache)
GPU
GPU	Listed ATI Mobility Radeon 9600, AGP 4X with 64 MB DDR graphics memory; XGA configurations instead offered Radeon 7500 with 32 MB	Integrated Intel Graphics (up to 40 TOPS), shared memory, DirectX 12 Ultimate
AI engine
AI engine	–	Copilot+ PC
Memory type
Memory type	Listed 512 MB PC2700 DDR-333 CL2.5 in one socket; two 200-pin SO-DIMM sockets and 2 GB maker maximum	LPDDR5X-8533, soldered (not upgradable), dual-channel; may run at a lower speed due to platform limits
Storage type
Storage type	Listed 40 GB 5400 rpm Enhanced IDE removable hard drive, 9.5 mm high, with Active Protection System; DVD-ROM/CD-RW combo in removable 9.5 mm Ultrabay Slim. Other configurations had DVD-ROM, DVD writer or 80 GB disk	One M.2 2280 PCIe 5.0 x4 slot; PCIe 4.0 x4 or PCIe 5.0 x4 NVMe SSD up to 2 TB, Opal 2.0
Cooling
Cooling	–	Fans; Lenovo quotes up to 20% better heat dissipation and 30 W sustained power
Battery and size
Battery life (maker's claim)
Battery life (maker's claim)	Up to 4.6 hours	Up to 32.8 hours
Battery capacity
Battery capacity	–	58 Wh
Weight
Weight	2.3 kg	0.977 kg (better)
Thickness
Thickness	31.4 mm	14.3 mm (better)
Width × depth
Width × depth	311 × 255 mm	312.5 × 215.75 mm
Battery life detail
Battery life detail	Six-cell lithium-ion battery, maker maximum 4.6 hours; optional nine-cell up to 7.5 hours, or nine-cell plus Ultrabay Slim battery up to 9.5 hours. Headline 2.3 kg is SXGA+ model weight including optical drive and battery; XGA models are 2.2 kg. Height spans 26.6–31.4 mm, maximum listed	58 Wh Li-ion; MobileMark 30 up to 19.2 hr, JEITA 3.0 up to 18.9 hr video and 38.0 hr idle (Lenovo test with Core Ultra 5 325, 16 GB and WUXGA Privacy Guard touch screen)
Charger
Charger	Universal 72 W AC adapter	65 W USB-C (PD 3.0) adapter, including nano and slim GaN versions; offerings vary by country
Fast charging
Fast charging	–	Rapid Charge to 80% in 1 hour with the 65 W adapter (when off, in standby or hibernating)
Materials
Materials	–	Carbon fibre top cover and aluminium bottom cover (WUXGA models); MIL-STD-810H tested
Colours
Colours	Black	Black; Black FIFA Edition
Connections
Ports
Ports	2 × USB-A, Ethernet, headphone jack	3 × Thunderbolt 4, USB-A, HDMI, headphone jack
Wi-Fi
Wi-Fi	802.11a/b/g, Atheros AR5001X+ on listed US 2373-3UU	Wi-Fi 7
Bluetooth
Bluetooth	Bluetooth, version unpublished in original PSREF	5.4
Webcam
Webcam	No built-in webcam listed	5MP with IR
Operating system
Operating system	Windows	Windows
Port detail
Port detail	Two USB 2.0, Gigabit RJ-45, parallel, VGA, 4 Mbps infrared, RJ-11 modem, S-video, separate microphone/headphone jacks; two Type I/II or one Type III CardBus PC Card slots. Docking accessories optional	3 × Thunderbolt 4 with USB PD 15–65 W and DisplayPort 2.1; USB-A 5 Gbps (Always On); HDMI 2.1 up to 4K 60 Hz; 3.5 mm headphone/mic combo jack; nano-SIM slot on WWAN models
External displays
External displays	–	Up to three external displays (four including the built-in); Thunderbolt up to 8K 60 Hz, HDMI up to 4K 60 Hz
Keyboard
Keyboard	87-key keyboard with Access IBM button, 19 mm pitch and 2.5 mm travel; ThinkLight keyboard illumination	6-row, spill-resistant, backlit; 1.5 mm key travel (1.35 mm on Fn row and G/H/B); Copilot key; TrackPoint
Trackpad
Trackpad	UltraNav touchpad and TrackPoint with Press-to-Select, scrolling and magnifying glass	Glass haptic touchpad (80 × 130 mm) or Mylar 3-button trackpad (80 × 120 mm)
Speakers
Speakers	Stereo 1 W speakers with dedicated volume and mute buttons	Stereo 2 W × 2, Dolby Atmos
Microphones
Microphones	Internal microphone and separate microphone input	Dual-microphone array, 360° far-field
Biometrics
Biometrics	IBM Embedded Security Subsystem 2.0, TCG compliant; power-on, supervisor and hard-drive passwords. Original listed May2004 configuration does not include the later fingerprint-reader revision	Fingerprint reader in the power button (match-on-chip); IR camera for Windows Hello