Page 2 of 4
Samsung includes a 44 watt-hour, 4-cell lithium polymer battery that's rated to deliver "up to 9 hours" on a charge. Before testing the battery, we charged it fully, discharged it completely and then recharged it again. With Samsung's power-saving features enabled, we surfed the web and checked email (over Wi-Fi) for about an hour, with the keyboard's LED on level three but letting Samsung adjust the screen's brightness.
Then it was time for a movie. We killed the keyboard light, cranked the screen brightness to full and played an endless loop of Breck Eisner's 2010 version of "The Crazies," with its 1:40 running time including credits. We got to watch Timothy Olyphant shoot the town drunk (the movie's intense opening scene) four times before the battery gave out. Total time on battery was exactly five hours and 12 minutes, about 15 percent longer than its predecessor.
It's worth noting that despite system activity (a running movie), Samsung's power-saving plan still dimmed, then blacked, the screen and tried to put the system to sleep. To complete the battery test unattended, we had to depart from our normal procedure and disable those actions.
In a prior review of Samsung's Series 9 the Easy Settings panel also brought up a Samsung-only function called Fast Boot mode. Control of this feature appears to be gone, but its effects are not. On our Windows 8 test machine, we timed a cold boot at less than eight seconds and returning from sleep at less than three seconds. Samsung has this performance nailed.
Geekbench performance of the new ATIV Book 9 is about half-a-thousand points slower than its predecessor. Last year's Samsung Series 9 model NP900X3C delivered 8,454 on Geekbench 2.3, while the tested ATIV Book 9 NP900X3E turned in a high Geekbench 2.4 score of 7,923.