So, despite being an ARM-based SoC, the Nvidia RTX Spark N1X doesn’t impress with its efficiency. For instance, the Asus Zenbook A16, an ARM-based Windows laptop with a Qualcomm Snapdragon X2 Elite Extreme, lasted for 12 hours and 40 minutes with a 70 Wh battery in LTT’s test.
The results were even more disappointing when LTT measured the battery life of the Asus ProArt 2026 and Microsoft Surface Laptop Ultra under stress. Running the GravityMark 1440p benchmark with the maximum performance profiles enabled, the Asus ProArt and Surface Laptop Ultra lasted for just 1 hour and 9 minutes and 53 minutes, respectively. To put the endurance of the RTX Spark laptops in context, the MacBook Pro 14 lasted for around 1.5 hours, while the Asus Zenbook A16 lasted more than 2 hours under the same conditions, with much smaller batteries.