Tenstorrent Blackhole p150b
Overview
The Tenstorrent Blackhole p150b is the passively cooled version of the p150a and is otherwise identical: 120 Tensix cores, 16 "big" RISC-V cores, 664 TFLOPS of Block FP8, 180 MB of on-die SRAM, 32 GB of GDDR6 at 512 GB/s, 300 W, PCIe 5.0 x16 and four QSFP-DD 800G ports. It carries no fan and is meant for server chassis that supply their own airflow. Tenstorrent publishes a single compute figure and labels nothing dense or sparse.
Performance Metrics
Peak theoretical throughput by precision type
| Precision | Bits | Peak TFLOPS | Efficiency |
|---|---|---|---|
| FP8 | 8 | 664.0 | 2.213 TFLOPS/W |
Power Specifications
TDP
300 W
Max Power
345 W
Power Connector
PCIe 8-pin
Cooling
Passive
Memory Specifications
Capacity
32 GB
Type
GDDR6
Bandwidth
512 GB/s
Interface
--
Hardware & Design
Form Factor
PCIe
Architecture
Blackhole
Process Node
--
Launch Year
--
Variant
p150b
Market Segment
Data Center
Full Specifications
| Compute Engine | |
|---|---|
| Tensix | 120 |
| Memory | |
| VRAM | 32 GB |
| Memory Type | GDDR6 |
| Bandwidth | 512 GB/s |
| On-Die SRAM | 180 MB |
| Interconnect & I/O | |
| GPU-to-GPU | 4x QSFP-DD 800G (Passive) |
| PCIe | 5.0 x16 |
| Power & Thermal | |
| TDP | 300 W |
| Cooling | Passive |
| General | |
| Form Factor | PCIe |
| Architecture | Blackhole |
Documentation & Resources
Common Use Cases
The Tenstorrent Blackhole is optimized for high-performance computing tasks with Blackhole architecture delivering high TFLOPS of compute power.
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