The smartphone runs Android Pie, has 8GB RAM, and is powered by "msmnile" which is a codename shared by the Snapdragon 855 and 855+ chips.
The NEX 3 5G achieved a score of 3,627 and 11,347 points in Geekbench 4's single and multi-core tests, respectively. These are in line with what other devices powered by the same chip have achieved.
vivo hasn't divulged much about the NEX 3 5G, but the smartphone appeared on TENAA last week revealing its design and full specs. You can head over here to learn more about it.