The 1U GPU accelerated server (OSS-VOLTA4) sets a new standard for HPC compute power in a space efficient design. Supporting four of the latest Volta-based NVIDIA GPUs, the OSS-VOLTA4 provides 31.2 TeraFLOPS of double precision performance for the most demanding HPC applications. For state-of-the-art deep learning workloads the OSS-VOLTA4 provides 62.8 TeraFLOPS of single precision performance. GPU management and monitoring and software are preinstalled on the OSS-VOLTA4. The GPU accelerated server also includes dual high-performance “Broadwell” E5 2698v4 2.2GHZ processors and a base configuration of 512GB of DDR4 memory scalable to 1TB. Four PCIe Gen3 slots are available for additional expansion and for scale out creating GPUltima clusters using IB or high speed Ethernet networking. The appliance also includes two 2.5” removable 1.9TB SATA SSD drives.