The difference between 768 and 900 pixels of vertical space is a significant advantage because it can show you several additional lines of text on your favorite web pages, e-mails, and docs without requiring you to scroll.Īt 250 nits and with a 300:1 contrast ratio, the ThinkPad T420s's screen isn't especially bright or colorful, but its antiglare surface allows for reasonable viewing angles. The 1600 x 900, matte 14.1-inch display on the T420s offers sharp images and significantly more desktop real estate than the 1366 x 768 panels we see on most other notebooks this size.

We consider temperatures below 95 degrees comfortable. After steaming a video at full screen for 15 minutes, we measured the touchpad at a chilly 84 degrees, the keyboard at a mere 90 degrees, and the bottom at only 91 degrees. Thanks in part to its dual exhaust ports, the ThinkPad T420s stayed cool during our use. The two discrete mouse buttons offer just the right amount of feedback. The 3.2 x 2-inch textured touchpad was also highly accurate, but multitouch gestures such as pinch-to-zoom were not smooth. We've long been fans of Lenovo's TrackPoint pointing stick, and the red nub on the ThinkPad T420s continues this proud tradition by offering extremely accurate navigation. The combination of these factors led us to a score of 86 words per minute on the Ten Thumbs Typing test, slightly above our 80-wpm average. The T420s's long palm rest also provides more than enough room to support adult-sized wrists.

Lenovo red button for model t420s