LeapFive NB2 quad-core RISC-V processor comes with GPU, NPU, and DSP
LeapFive NB2 processor is equipped with MIPI DSI and LVDS display interface, dual GbE, USB 3.2/2.0 interfaces, and other peripheral interfaces that make it well-suited to a wide range of applications including Smart Home applications, robotics, industrial gateways, drones, building automation, smart cities, digital signage, medical equipment and more.
The 2.5 DMIPS/MHz number from the specifications is the same as the SiFive U74-MC core with Cortex-A55-class performance, so considering the LeapFive NB2 also comes with the SiFive Shield security platform, I would not be surprised if those were indeed U74-MC 64-bit RISC cores.