Semidynamics in Spain has developed a customisable 4-way RISC-V 64bit core for data centre chips.
The Atrevido 423 RISC-V core has a wide 4-way pipeline for decoding and retiring twice as many instructions as the previous 2-way 223 core. It is also coupled with more functional units, which significantly increases the instructions-per-cycle (IPC) throughput.