CS-3
Active
Cerebras Systems
Overview
Current production wafer-scale system, one WSE-3 per chassis, used for Cerebras Cloud, OpenAI Ultrafast, AWS disaggregated decode, and on-prem clusters. The 5nm WSE-3 is 46,225 mm2 with 4 trillion transistors, 900,000 AI cores, 44 GB of on-chip SRAM, and 21 PB/s of memory bandwidth, about 58 times the area of an Nvidia B200 die and thousands of times its on-chip memory bandwidth.
In volume production. Flex is expanding Milpitas lines for an expected ~7x CS-3 output increase through 2026; Sanmina and Rocket EMS are also adding lines. Still the workhorse for OpenAI, AWS, and the inference cloud while CS-4 ramps.