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Compare Lenovo ThinkPad T420s vs. Lenovo ThinkPad T490

This is a side-by-side comparison of the specs of the ThinkPad T420s vs. the ThinkPad T490. Differences are highlighted in yellow.
Item ThinkPad T420s ThinkPad T490
Item image Item image
Screen size 14" [x] 14" [x]
Maximum RAM 16GB [x] 48GB [x]
CPU i7-2620M [x] / i5-2450M [x] / i5-2410M [x] / i3-2310M [x] / i7-2640M [x] / i5-2540M [x] / i5-2520M [x] i5-8265U [x] / i7-8565U [x] / i7-8665U [x] / i5-10210U [x] / i7-10510U [x] / i7-10710U [x]
Release year 2011 [x] 2019 [x]
Screen brightness 250nt [x] (HD+ option) / 200nt [x] (HD option) 500nt [x] (WQHD IPS HDR option) / 220nt [x] (HD option) / 250nt [x] (FHD IPS option) / 300nt [x] (FHD IPS touch option) / 400nt [x] (FHD Low Power option) / 400nt [x] (FHD Privacy Guard option)
Battery capacity 43.2Wh [x] 50Wh [x]
Weight 1.67kg [x] 1.58kg [x]
Power interface Coax barrel [x] USB-C [x]
Graphics Intel HD Graphics 3000 [x] Intel HD Graphics 620 [x] / NVIDIA GeForce MX250 [x]
Resolution width 1366px [x] (HD option) / 1600px [x] (HD+ option) 2560px [x] (WQHD IPS HDR option) / 1920px [x] (FHD IPS touch option) / 1920px [x] (FHD IPS option) / 1366px [x] (HD option) / 1920px [x] (FHD Low Power option) / 1920px [x] (FHD Privacy Guard option)
Resolution height 768px [x] (HD option) / 900px [x] (HD+ option) 1440px [x] (WQHD IPS HDR option) / 768px [x] (HD option) / 1080px [x] (FHD Low Power option) / 1080px [x] (FHD Privacy Guard option) / 1080px [x] (FHD IPS touch option) / 1080px [x] (FHD IPS option)
RAM interface Dual SODIMM slot [x] Single SODIMM slot [x]
Screen type TN [x] IPS [x] (WQHD IPS HDR option) / IPS [x] (FHD IPS option) / TN [x] (HD option) / IPS [x] (FHD IPS touch option) / IPS [x] (FHD Low Power option) / IPS [x] (FHD Privacy Guard option)
Colour Black [x] Black [x]
Storage format 2.5" 7mm SATA [x] M.2 [x]
Key travel 2.5mm [x] 1.7mm [x]
PWM detected? Unknown [x] Yes [x] (FHD IPS option) / No [x] (WQHD IPS HDR option)
Screen finish Matte [x] Matte [x] (HD option) / Matte [x] (FHD Privacy Guard option) / Matte [x] (FHD IPS option) / Matte [x] (FHD IPS touch option) / Glossy [x] (WQHD IPS HDR option) / Matte [x] (FHD Low Power option)
PWM frequency 2451Hz [x] (FHD IPS option)
Contrast ratio 1000:1 [x] (FHD Privacy Guard option) / 400:1 [x] (HD option)
Width 34.3cm [x] 32.9cm [x]
Depth 23cm [x] 22.7cm [x]
Height 2.6cm [x] 1.79cm [x]
Supports Coreboot? Yes [x] No [x]
Multitouch screen? Yes [x] (FHD IPS touch option)
ThinkLight? Yes [x] No [x]
Backlit? No [x] Yes [x]
Removable battery? Yes [x] No [x]
Trackpoint buttons Yes [x] Yes [x]
CPU architecture Sandy Bridge [x] Whiskey Lake [x]
Card reader? SD [x] MicroSD [x]
Function row style Physical keys [x] Physical keys [x]
NFC? No [x] Optional [x]
Fingerprint reader? Optional [x] Optional [x]
Keyboard style 7 row [x] Chiclet (Island keys) [x]
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