32GB VRAM and four QSFP 800G ports per PCIe card will allow LLM runners to get up-to 128GB VRAM pooling in a single machine, this is the newly launched p150a Blackhole LLM card from Tenstorrent, there is another 28GB model named p100a that has the same up-to 300W power consumption but doesn’t come with QSFP ports for memory pooling. Both of these cards are standard PCIe 5.0 based and will work in x86_64 Intel and AMD platforms under Ubuntu 22.04, these are built on the 6nm fabrication nodes. Pricing starts at $999 for 28GB model and 1,299 for 32GB VRAM model.
Latest Blackhole Series LLM Hardware 2025 Specs:
| Specification | Blackhole p150a | Blackhole p100a |
|---|---|---|
| Processor | Blackhole Tensix Processor | Blackhole Tensix Processor |
| Core Count | 140 Tensix Cores | 120 Tensix Cores |
| Memory | 32 GB GDDR6 | 28 GB GDDR6 |
| Power Consumption | Up to 300W | Up to 300W |
| Cooling | Active-cooled form factor | Active-cooled form factor |
| Connectivity | Four passive QSFP-DD 800G ports (cables sold separately) | No Ethernet or additional ports specified |
| Target Use | Desktop workstations, multi-card linking for memory pooling | Desktop workstations |
| Software Support | Fully open-source stack (TT-Forge™, TT-NN™, TT-Metalium™, TT-LLK) | Fully open-source stack (TT-Forge™, TT-NN™, TT-Metalium™, TT-LLK) |
| Manufacturing Process | 6nm (updated in latest generation) | 6nm (updated in latest generation) |
| Memory Bandwidth | 512 GB/sec | 448 GB/sec |
| Price | $1,299 (base price for p150 variants) | $999 (base price for p100) |
Blackhole p150 inference speed numbers
If you wish to use 32GB LLM model in the q4km format like this Deepseek R1 then the file size of that model is 19.9GB, theoretical max tok/s will be around 25.72 tok/s, in real life the speeds will likely be around 15-20 tok/s due to optimization issues on new hardware.
Blackhole p100 inference speed numbers
Similarly, the smaller sibling will have theoretical max tok/s of around 22.5 tok/s, realistic expectations will be 13-18 tok/s.
Blackhole p150 Images:
Blackhole p100 Images
