Lenovo Vibe X3 was rumored to feature Snapdragon 810 SoC, but that turned out to be false. It has been found with MSM8992 SoC on Geekbench 3, that is Snapdragon 808. It was running on Android Lollipop 5.1.1 OS and features 3GB RAM.
Lenovo Vibe X3 Geekbench 3 benchmark score
Single-core : 863
Multi-core : 3167
It seems Lenovo doesn’t want to launch devices with the latest Chipsets, or may be they skipped Snapdragon 810 because of its heating issue. Along with Snapdragon 808 SoC and 3GB RAM, Lenovo Vibe X3 is expected to feature Finger Print Sensor, Dolby Digital Sound, 5.5 inches Full HD display, 21-megapixel rear camera with dual-LED Flash and 8-megapixel front camera.