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Compare Lenovo ThinkPad T440 vs. Lenovo ThinkPad X1 Carbon (3rd Generation)

This is a side-by-side comparison of the specs of the ThinkPad T440 vs. the ThinkPad X1 Carbon (3rd Generation). Differences are highlighted in yellow.
Item ThinkPad T440 ThinkPad X1 Carbon (3rd Generation)
Item image Item image
Screen size 14" [x] 14" [x]
Maximum RAM 12GB [x] 16GB [x]
CPU i7-4500U [x] / i7-4600U [x] / i3-4010U [x] / i3-4030U [x] / i5-4200U [x] / i5-4210U [x] / i5-4300U [x] i5-5200M [x] / i5-5300M [x] / i7-5500U [x] / i7-5600U [x]
Release year 2013 [x] 2015 [x]
Screen brightness 200nt [x] (HD option) / 250nt [x] (HD+ option) 270nt [x] (WQHD IPS touch option) / 300nt [x] (WQHD IPS option) / 300nt [x] (FHD IPS option)
Battery capacity 47.5Wh [x] / 72Wh [x] 50Wh [x]
Weight 1.72kg [x] 1.39kg [x]
Power interface Slim-tip (square plug) [x] Slim-tip (square plug) [x]
Graphics Intel HD Graphics 4400 [x] / NVIDIA GeForce ® GT 720M [x] Intel HD Graphics 5500 [x]
Resolution width 1600px [x] (HD+ option) / 1366px [x] (HD option) 2560px [x] (WQHD IPS touch option) / 2560px [x] (WQHD IPS option) / 1920px [x] (FHD IPS option)
Resolution height 900px [x] (HD+ option) / 768px [x] (HD option) 1440px [x] (WQHD IPS touch option) / 1440px [x] (WQHD IPS option) / 1080px [x] (FHD IPS option)
RAM interface Dual SODIMM slot [x] Soldered [x]
Screen type TN [x] IPS [x] (FHD IPS option) / IPS [x] (WQHD IPS touch option)
Colour Black [x] Black [x]
Storage format 2.5" 7mm SATA [x] M.2 [x]
PWM detected? Yes [x]
Screen finish Matte [x] Matte [x] (WQHD IPS option) / Matte [x] (FHD IPS option)
Width 33.9cm [x] 33.1cm [x]
Depth 23.25cm [x] 22.6cm [x]
RAM 4GB [x] / 8GB [x] / 16GB [x]
Height 2.1cm [x] 1.77cm [x]
Fingerprint reader? Optional [x] Yes [x]
Backlit? Yes [x] Yes [x]
Removable battery? Yes [x] No [x]
Trackpoint buttons No [x] Yes [x]
Multitouch screen? Yes [x] (WQHD IPS touch option)
Card reader? SD [x] No [x]
Function row style Physical keys [x] Physical keys [x]
NFC? Optional [x] No [x]
ThinkLight? No [x]
Supports Coreboot? No [x] No [x]
CPU architecture Haswell [x] Broadwell [x]
Keyboard style Chiclet (Island keys) [x] Chiclet (Island keys) [x]
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