TOPAZE D is a rugged 3U VPX 7-payload slots chassis dedicated to high speed signal processing and computing applications. Its I/O flexibility is capable of meeting a large number of configurations where multi CPU-slots fulfilled with multi-Core Xeon D server-class SoC, FPGA and GPGPU heterogeneous system architecture is mandatory. It has been imagined by our R&D with the support of our key customers to satisfy RADAR, SONAR, SIGINT, EW and persistent ISR applications requiring rock-solid reliability and SWaP constraints.