NVIDIA Jetpack Reference Guide - Xavier NX
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Characteristics
The Jetson Xavier NX series offers AI performance of up to 21 TOPS in a small form factor of 70 mm x 45 mm. Able to run multiple neural network in parallel, support high-resolution sensors with the highest performance and power efficiency of the Xavier Series. The modules are available in version of 8GB and 16GB.

Refer to the NVIDIA Jetson Xavier NX SoM Overview of the NVIDIA Jetson Xavier NX wiki for a detailed overview of this module capacities.
Supported Jetpack versions