Both the Lumia 920 and the Windows Phone 8X feature a 1.5-GHz Snapdragon S4 CPU. When we ran the WPBench test, which measures CPU performance and memory read and write speed, both devices beat the 149 category-average. However, the 8X’s score of 242.1 topped the 920’s result of 229.
The 8X barely edged out the Lumia when we ran Sunspider, completing the test in 905.2 ms versus Nokia’s 906.1 ms. During the Peacekeeper benchmark, the 920 scored 340, slightly higher than the Windows Phone 8X’s rating of 330.
In everyday use, the 8X and Lumia 920 were neck and neck. The phones opened apps and fired up their respective cameras just as quickly as one another. In addition, scrolling through the app list was just as smooth on both handsets.
Although the Windows Phone 8X narrowly outperformed the Lumia 920 on benchmarks, both of these phones are equally swift in the real world.
The Windows Phone 8X and the Lumia 920 run on AT&T’s blistering 4G LTE network. However, the Lumia 920 outpaced the 8X during our testing.
Using the Speed Test app, the 920 delivered an average download speed of 11.8 Mbps in the Bronx and an average upload speed of 5.6 Mbps. Mobile versions of CNN.com and ESPN.com loaded in 2.6 and 3.7 seconds, respectively. The full versions of NYTimes.com and Laptopmag.com loaded in 4.9 and 6.4 seconds.
The 8x clocked in with 9.5 Mbps down and 5.6 Mbps up. CNN.com loaded in 3.4 seconds, while ESPN.com booted in 5.1 seconds. The desktop versions of NYTimes.com and Laptopmag.com loaded in 6.2 and 8.3 seconds.
When we tested in Manhattan, the 920 notched 12.8 Mbps down/5.9 Mbps up, while the 8X gave us 9.6 Mbps down/6 Mbps up. The mobile editions of CNN.com and ESPN.com loaded in 1.3 and 2.5 seconds on the 920. The sites took slightly longer on the 8x, at 2.1 and 3.6 seconds. On the Lumia 920, the full versions of NYTimes.com and Laptopmag booted in 3.8 and 5.7 seconds, while the 8X loaded those sites in 5.7 and 7.1 seconds.
WINNER: Nokia Lumia 920
The Nokia Lumia 920 consistently delivered faster 4G LTE speeds than did the Windows Phone 8X.
Neither the 8X nor the 920 has a memory card slot for expandable storage. For $99, consumers can get an HTC with 8GB of internal memory, while the $199 version offers 16GB. The $99 Nokia Lumia 920 comes standard with a generous 32GB of storage.
WINNER: Nokia Lumia 920
The Lumia 920 features double the storage of the 16GB Windows Phone 8X for $100 less.