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Lenovo ThinkPad T16 Gen 4 (Intel) vs Lenovo ThinkPad T400

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

LenovoThinkPad T16 Gen 4 (Intel)LenovoThinkPad T400
Overview
ReleasedJune 2025August 2008
Display
Screen size16″14.1″
Resolution1920 × 12001280 × 800
PanelIPS LCD–
Refresh rate60 Hz–
Brightness400 nits or 500 nits185 nits
TouchscreenNo or YesNo
Display typeWUXGA IPS, 16:10; 400-nit non-touch or on-cell touch, 500-nit low power, or 500-nit touch with ThinkPad Privacy Guard14.1-inch WXGA or WXGA+ LCD; CCFL and LED options; listed configurations use the 185-nit WXGA CCFL panel
Colour range45% NTSC (400-nit); 100% sRGB (500-nit)–
Screen finishAnti-glareAnti-glare
Display features1,000:1 contrast (1,200:1 on the low-power panel); Eyesafe Certified 2.0 on the touch and low-power panels; 87.22% screen-to-body ratio–
Performance
ProcessorIntel Core Ultra 5 225U, Intel Core Ultra 5 225H, Intel Core Ultra 5 226V, Intel Core Ultra 5 228V, Intel Core Ultra 5 235U, Intel Core Ultra 5 235H, Intel Core Ultra 5 236V, Intel Core Ultra 5 238V, Intel Core Ultra 7 255U, Intel Core Ultra 7 255H, Intel Core Ultra 7 258V, Intel Core Ultra 7 265U, Intel Core Ultra 7 265H or Intel Core Ultra 7 268VIntel Core 2 Duo P8400 or Intel Core 2 Duo P8600
CPU cores8, 12, 14 or 162
CPU threads8, 14 or 16–
GraphicsIntel Graphics, Intel Arc 130T, Intel Arc 130V, Intel Arc 140T or Intel Arc 140VIntel Graphics Media Accelerator 4500MHD
AI engine (NPU)12 TOPS, 13 TOPS, 40 TOPS, 47 TOPS or 48 TOPS–
Memory16 GB, 32 GB or 64 GB2 GB
Storage256 GB to 1 TB128 GB to 160 GB
CPUCore Ultra 200U with 2 P-cores, 8 E-cores and 2 LP E-cores; Core Ultra 200H with 4 or 6 P-cores, 8 E-cores and 2 LP E-cores; Core Ultra 200V (Lunar Lake) with 4 P-cores and 4 LP E-cores; Intel vPro Enterprise on selected modelsIntel Core 2 Duo with 1066 MHz front-side bus; listed configurations are factory 7417-T1U and 7417-PAU
GPUIntegrated Intel Graphics (200U), Intel Arc 130T or 140T (200H, with at least 16 GB dual-channel memory) or Intel Arc Graphics 130V or 140V (200V); shared memory, DirectX 12.2Intel GMA 4500MHD in the GM45 chipset on listed configurations; optional ATI Mobility Radeon HD 3470 with switchable graphics on other models
AI engineCopilot+ PC with Core Ultra 200V (NPU up to 48 TOPS); Core Ultra 200U and 200H models are AI PCs with an NPU up to 13 TOPS–
Memory typeCore Ultra 200U and 200H, DDR5-5600 in two SODIMM or CSODIMM slots, up to 64 GB; Core Ultra 200V, LPDDR5X-8533 on the processor package, 16 or 32 GB, not upgradableDDR3-1066 PC3-8500; two SO-DIMM sockets, up to 8 GB
Storage typeOne M.2 2280 slot, PCIe 5.0 x4 with 200V and 200H processors or PCIe 4.0 x4 with 200U; NVMe SSD up to 2 TB, Opal 2.0Removable 2.5-inch SATA HDD or 1.8-inch SATA SSD; listed configurations have 160 GB 5400 rpm HDD and 128 GB SSD respectively; optional second disk in Ultrabay
Battery and size
Battery life (maker's claim)Up to 21.4 hoursUp to 6.5 hours
Battery capacity86 Wh–
Weight1.76 kg2.3 kg
Thickness18.14 mm32 mm
Width × depth359.7 × 250.8 mm335.5 × 270 mm
Battery life detail52.5 Wh or 86 Wh Li-ion; Core Ultra 5 225U with 52.5 Wh and low-power WUXGA, MobileMark 25 up to 11.5 hr, JEITA 3.0 up to 12.7 hr video and 24.1 hr idle, local video up to 21.4 hr; Core Ultra 5 225H with 52.5 Wh, local video up to 18.3 hrFour-, six- or nine-cell removable battery; six-cell up to 6.5 hours, six-cell plus Ultrabay battery up to 8 hours, nine-cell up to 9.8 hours; dimensions and starting weight shown with six-cell battery
Charger100 W USB-C (PD 3.0) slim adapter; offerings vary by country65 W adapter with integrated graphics; 90 W for discrete graphics
Fast chargingRapid Charge to 80% in 1 hour (52.5 Wh with a 65 W or 100 W adapter; 86 Wh with the 100 W adapter; when off, in standby or hibernating)–
MaterialsPC with 20% carbon fibre top and bottom coversSuper-Elastic PolyCarbonate lid, carbon-fibre reinforced plastic bottom and magnesium roll cages
ColoursBlackBlack
Connections
Ports2 × Thunderbolt 4, 2 × USB-A, HDMI, Ethernet, headphone jack3 × USB-A, Ethernet, headphone jack
Wi-FiWi-Fi 7 or Wi-Fi 6E802.11a/b/g/n; optional WiMAX
Bluetooth5.4 or 5.3 (with Wi-Fi 6E)Optional Bluetooth 2.1
Webcam5MP, optional IROptional 1.3-megapixel fixed-focus camera
Operating systemWindowsWindows
Port detail2 × Thunderbolt 4 (USB4 40 Gbps) with USB PD 15–100 W and DisplayPort 2.1; 2 × USB-A 5 Gbps (one Always On); HDMI 2.1 up to 4K 60 Hz; Gigabit Ethernet (RJ-45); 3.5 mm headphone/mic combo jack; optional smart card reader and nano-SIM slot (4G or 5G models)Three USB 2.0, VGA, Gigabit Ethernet, RJ-11 modem, FireWire 400, separate microphone and headphone jacks, ExpressCard/54 and docking connector; PC Card and seven-format card reader vary by model
External displaysCore Ultra 200U and 200H, up to three external displays (four including the built-in); Core Ultra 200V, up to two (three in total); Thunderbolt up to 8K 60 Hz, HDMI up to 4K 60 HzVGA up to 2048 × 1536 at 75 Hz; DVI pass-through via compatible optional dock
Keyboard6-row, spill-resistant, backlit or non-backlit, with numeric keypad; 1.5 mm key travel (1.35 mm on Fn row and G/H/B); Copilot key; TrackPoint89-key spill-resistant keyboard; ThinkLight illuminates the keys
TrackpadMylar 3-button trackpad, 67.7 × 115 mmUltraNav touchpad and TrackPoint with separate buttons
SpeakersStereo 2 W × 2, Dolby AudioStereo speakers, 1 W
MicrophonesDual-microphone array, 360° far-field, Dolby VoiceDigital microphone
BiometricsOptional fingerprint reader in the power button (match-on-chip); optional IR camera for Windows HelloOptional swipe fingerprint reader; TPM 1.2

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