SOPHGO SC11 FP300

The SC11 FP300 is Sophgo's cloud accelerator card and the first part in this catalogue from the Chinese TPU and RISC-V designer. It is a full-length full-height dual-width PCIe Gen5 card weighing 1.5 kg and drawing at most 300 W, and its defining choice is memory: 256 GB of LPDDR5X at 8,533 Mbps giving about 1.1 TB/s, where almost every competitor at this capacity uses HBM. That trade buys capacity and cost at the expense of bandwidth, which is exactly the argument Sophgo makes for it, pitching the card on inference cost and power per token rather than on peak arithmetic. A 128 GB option exists and both carry ECC. Eight cards in a 4U server reach 2 TB of accelerator memory, linked by Sophgo's own SG-Link card-to-card fabric at 256 GB/s. The card also carries an unusually heavy media block for a datacentre accelerator, decoding 256 and encoding 128 concurrent 1080p30 streams in H.264, H.265, VP9 and AV1, and Sophgo embeds RISC-V cores on it so that operators its compiler cannot map can be compiled rather than dropped. Sophgo publishes no throughput figure of any kind for the card, in any document, so the six datatypes it names are recorded here without rates.