Specifications/Requirements

Wormhole™ Tensix Processor

The Wormhole™ n150s and n300s Tensix Processor add-in boards are built using the Tenstorrent Wormhole™ Tensix Processor:

  • Tensix Core Count: 80

  • SRAM: 120MB (1.5MB per Tensix Core)

  • Memory: 12GB GDDR6, 192-bit memory bus

n150s/n300s Comparison Table

NOTE: The n150s and n300s add-in cards come with a heatsink for passive cooling in systems which can provide sufficient forced airflow to the card. If your system does not (for example, a desktop workstation), installing the Active Cooling Kit is required. If the card isn’t sufficiently cooled, performance will be substantially reduced to stay in a safe operating temperature range and you risk damage to the card.

Specification

n150s

n300s

Part Number

TC-02001

TC-02003

Wormhole™ ASICs

1

2

Tensix Cores

72

128 (64 per ASIC)

AI Clock

1 GHz

1 GHz

SRAM

108MB

192MB (96MB per ASIC)

Memory

12GB GDDR6

24GB GDDR6

Memory Speed

12 GT/sec

12 GT/sec

Memory Bandwidth

288 GB/sec

576 GB/sec

TeraFLOPs (FP8)

262

466

TeraFLOPs (FP16)

74

131

TeraFLOPs (BFP8)

148

262

TBP (Total Board Power)

160W

300W

External Power

1x 4+4-pin EPS12V

1x 4+4-pin EPS12V

Connectivity

2x Warp 100 Bridge
2x QSFP-DD 400GbE (Active)*

2x Warp 100 Bridge
2x QSFP-DD 400GbE (Active)*

Internal Chip-to-Chip

N/A

400GbE

System Interface

PCI Express 4.0 x16

PCI Express 4.0 x16

Cooling

Passive

Passive

Dimensions (w/o Cooling Kit) (WxDxH)

36mm x 254mm x 111mm

36mm x 254mm x 111mm

Dimensions (w/ Cooling Kit) (WxDxH)

36mm x 393.5mm x 114mm

36mm x 393.5mm x 114mm

*For connecting to Tenstorrent Wormhole™-based cards only.

n150s/n300s without Active Cooling Kit

Connectivity

The n150s and n300s include two different methods for interconnecting cards.

The Warp 100 notches are for attaching internal Warp 100 bridges between n150s and n300s cards.

The two QSFP-DD ports are active and support 400GbE connectivity between cards and/or Wormhole-based systems/servers.

Data Precision Formats

The n150/n300 support the following data precision formats:

Format

Bit Depth

Floating point

FP8, FP16, BF16
FP32 (Output Only)

Block floating point

BFP2, BFP4, BFP8

Integer

INT8
INT32 (Output Only)

Unsigned Integer

UINT8

TensorFloat

TF32

Vector

VTF19, VFP32

Minimum System Requirements

Part

Requirement

CPU

x86_64 architecture*

Motherboard

PCI Express 4.0 x16 slot
Dual-slot-width (n150s/n300s)
2.5-slot-width (n300d)

Memory

64 GB

Storage

100 GB (≥2TB recommended)

Power Connectors

4+4-pin EPS12V
6+2-pin PCIe (if using Active Cooling Kit)

Total Board Power

Up to 160W (n150s) / 300W (n300s/n300d)

Operating Temperature Range (Die)

0C - 75C

Operating System

Ubuntu version 20.04 (Focal Fossa) **

Internet Connection

Required for driver and stack installation.

** CPU core count and number of sockets will depend on the amount of host preprocessing and post-processing required before and after the accelerator processing.*

**To check your version, type cat /etc/os-release.

Environment Specifications

The Wormhole™ n150s and n300s Tensix Processor add-in boards are designed to meet these environmental specifications:

Specification

Requirement

Operating Temperature Range

10°C/50°F - 35°C/95°F

Storage Temperature Range

-40°C/-40°F - 75°C/167°F

Elevation

-5 ft. to 10,000 ft.

Air Flow (without Active Cooling Kit)

≥30 CFM @ up to 35°C/95°F