Tenstorrent Blackhole p100a

The Tenstorrent Blackhole p100a is the entry card in the Blackhole line: 120 Tensix cores and 16 "big" RISC-V cores delivering 664 TFLOPS of Block FP8, with 180 MB of on-die SRAM and 28 GB of GDDR6 at 448 GB/s, on a 300 W actively cooled PCIe 5.0 x16 board. It is the one Blackhole card with no QSFP-DD networking, so it scales within a host but not between them. Tenstorrent publishes a single compute figure for this card and labels nothing dense or sparse, so only Block FP8 is recorded here and no sparse value is derived. Tenstorrent's architecture is unusual in that every Tensix core is a full RISC-V compute tile rather than a fixed-function matrix unit, and the whole stack down to the low-level kernel API is open source.