Firm headed by legendary chip architect behind AMD Zen finally releases first hardware — days after being selected to build the future of AI in Japan, Tenstorrent unveils Grayskull, its RISC-V answer to GPUs

Tenstorrent Grayskull e75
(Image credit: Tenstorrent)

Tenstorrent, the firm led by legendary chip architect Jim Keller, the mastermind behind AMD's Zen architecture and Tesla's original self-driving chip, has launched its first hardware. Grayskull is a RISC-V alternative to GPUs that is designed to be easier to program and scale, and reportedly excels at handling run-time sparsity and conditional computation.

Off the back of this, Tenstorrent has also unveiled its Grayskull-powered DevKits - the standard Grayskull e75 and the more powerful Grayskull e150. Both are inference-only hardware designed for AI development, and come with TT-Buda and TT-Metalium software. The former is for running models right away, while the latter is for users who want to customize their models or write new ones.

The Santa Clara-based tech firm's milestone launch comes hot on the heels of a partnership with Japan's Leading-edge Semiconductor Technology Center (LSTC). Tenstorrent's RISC-V and Chiplet IP will be used to build a state-of-the-art 2nm AI Accelerator, with the ultimate goal of revolutionizing AI performance in Japan.

By the power of Grayskull!

The Grayskull e75 model is a low-profile, half-length PCIe Gen 4 board with a single Grayskull processor, operating at 75W. The more advanced e150 model is a standard height, 3/4 length PCIe Gen 4 board containing one Grayskull processor operating at up to 200W, and balancing power and throughput.

Tenstorrent processors comprise a grid of cores known as Tensix Cores and come with network communication hardware so they can talk with one another directly over networks, instead of through DRAM.

The Grayskull DevKits support a wide range of models, including BERT for natural language processing tasks, ResNet for image recognition, Whisper for speech recognition and translation, YOLOv5 for real-time object detection, and U-Net for image segmentation.

The Grayskull e75 and e150 DevKits are available for purchase now at $599 and $799, respectively.

More from TechRadar Pro

TOPICS
Wayne Williams
Editor

Wayne Williams is a freelancer writing news for TechRadar Pro. He has been writing about computers, technology, and the web for 30 years. In that time he wrote for most of the UK’s PC magazines, and launched, edited and published a number of them too.

Read more
Tenstorrent Grayskull e75
A rare sight: LG joins archrival Samsung in $700m funding round to back up Nvidia competitor led by AMD legend
Project DIGITS - front view
I am thrilled by Nvidia’s cute petaflop mini PC wonder, and it’s time for Jensen’s law: it takes 100 months to get equal AI performance for 1/25th of the cost
Cerebras WSE-3
DeepSeek on steroids: Cerebras embraces controversial Chinese ChatGPT rival and promises 57x faster inference speeds
Representation of AI
These are the 10 hottest AI hardware companies to follow in 2025
A Corsair One i500 on a desk
Microsoft backed a tiny hardware startup that just launched its first AI processor that does inference without GPU or expensive HBM memory and a key Nvidia partner is collaborating with it
Sam Altman and OpenAI
Nvidia, look away! OpenAI is almost ready to deliver first prototype of its AI GPU - General Processing Unit
Latest in Pro
An American flag flying outside the US Capitol building against a blue sky
Sean Plankey selected as CISA director by President Trump
A young man working on laptop in office writing notes
Ending the fix/break cycle of End User Computing support
OpenAI
OpenAI wants to help your business build its next generation of AI agents
Ai tech, businessman show virtual graphic Global Internet connect Chatgpt Chat with AI, Artificial Intelligence.
Nation-state threats are targeting UK AI research
A hand reaching out to touch a futuristic rendering of an AI processor.
Business investors are positive about AI’s impact on the economy
Scam alert
Fake jobs and phone calls: How Americans lost $12.5 bn to fraud in 2024
Latest in News
Vision Pro Metallica
Apple Vision Pro goes off to never never land with Metallica concert footage
Mufasa is joined by another lion, a monkey and a bird in this promotional image
Mufasa: The Lion King prowls onto Disney+ as it finally gets a streaming release date
An American flag flying outside the US Capitol building against a blue sky
Sean Plankey selected as CISA director by President Trump
An Nvidia GeForce RTX 4060 on a table with its retail packaging
Nvidia RTX 5060 GPU spotted in Acer gaming PC, suggesting rumors of imminent launch are correct – and that it’ll run with only 8GB of video RAM
Indiana Jones talking to a friend in a university setting with a jaunty smile on his face
New leak claims Indiana Jones and the Great Circle PS5 release will come in April
A close up of the limited edition vinyl turntable wrist watch from AndoAndoAndo
This limited-edition timepiece turns the iconic Technics SL-1200 turntable into a watch, and I want one