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Tenstorrent Galaxy Blackhole

rack
32× Blackhole
10 x 400 GbE per ASIC for 32 TB/s aggregate; up to 56 x 800 GbE QSFP-DD ports for 11.2 TB/s
FP8
23.0
PFLOPS
Power
12.0
kW Total
Memory
1024
GB Total

A 6U air-cooled chassis holding 32 Blackhole ASICs and rated by Tenstorrent at 23 PFLOPS of Block FP8, with 6.2 GB of on-die SRAM at 2.9 PB/s, 1 TB of GDDR6 at 16 TB/s, and 32 TB/s of aggregate Ethernet from ten 400 GbE links per ASIC plus up to 56 external 800 GbE QSFP-DD ports carrying 11.2 TB/s. It draws 8 to 10 kW on average and 12 kW at maximum, and is hosted by a single AMD EPYC 9004 with up to 32 cores and up to 576 GB of DDR5. Note that the Galaxy does not use the retail p150 bin: its figures work out at 718.75 TFLOPS and 193.75 MB of SRAM per ASIC, against 664 TFLOPS and 180 MB on the p150 card, so the ASICs here are a higher bin of the same silicon and Tenstorrent does not publish their Tensix core count. The compute figure recorded is Tenstorrent's own 23 PFLOPS for the machine, not 32 times the card, which would understate it by eight percent. Tenstorrent labels nothing dense or sparse and publishes no sparse rate.

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FP8
23.00
PFLOPS

System Details

GPU Configuration

GPU Count: 32 GPUs
Architecture: Blackhole
Interconnect: 10 x 400 GbE per ASIC for 32 TB/s aggregate; up to 56 x 800 GbE QSFP-DD ports for 11.2 TB/s

System Specifications

Form Factor: rack
Total Power: 12.0 kW
Total Memory: 1024 GB
Memory Bandwidth: 16000 GB/s

Precision Performance Breakdown

PrecisionSystem PerformancePer GPUEfficiency
23.000 PFLOPS 718.8 TFLOPS

All figures are dense. Vendors commonly headline the number, which is twice the dense one.

Powered by Tenstorrent Blackhole

This system utilizes 32 × Tenstorrent Blackhole p150a GPUs, each delivering exceptional performance for AI and HPC workloads.

Per GPU TDP

300W

Per GPU Memory

32 GB

Process Node

Architecture

Blackhole

Documentation & Resources

Official Datasheet

Tenstorrent Galaxy Blackhole technical specifications

Download PDF

Blackhole card comparison table (Tenstorrent)

Tenstorrent • Latest version

View Document ↗

Typical Use Cases

AI/ML Training
High-Performance Computing
Data Analytics

The Tenstorrent Galaxy Blackhole runs 32× Blackhole GPUs over 10 x 400 GbE per ASIC for 32 TB/s aggregate; up to 56 x 800 GbE QSFP-DD ports for 11.2 TB/s, delivering 23.0 PFLOPS FP8 dense.