Cerebras CS-3 Datasheet - 44 GB SRAM, 21 PB/s, 214 Pb/s fabric, 1.2 Tb/s I/O, 27 kW, TSMC 5nm
spec-sheet
Fields
id
sources/vb-cerebras-cs3-datasheet-memory-powerPublisher
Cerebras Systems
Kind
spec-sheet
Accessed
2026-10-04
notes
Verbatim from the same PDF. 'Largest GPU: 4 trillion transistors, 46,225 mm2 silicon, 900,000 cores optimized for sparse linear algebra, 125 petaFLOPS* of AI compute, 44 GB of on-chip memory, 21 PB/s memory bandwidth, 214 Pb/s fabric bandwidth, TSMC 5nm process'. I/O Bandwidth 1.2 Tb/s. System Power: '27 kW max'. System Dimensions 16 RU, liquid cooling (DI water, 20+/-2C, 100 L/min). Rack: 2x CS-3, 55 kW rated / 47 kW average-for-inference. DISCREPANCY: accelerators/cerebras-wse-3.json records tdp_w 25000; the datasheet states 27 kW max system power for CS-3 (peak 27 kW on the NET rack page too). 25 kW is not the figure the datasheet gives.
Notes
Verbatim from the same PDF. 'Largest GPU: 4 trillion transistors, 46,225 mm2 silicon, 900,000 cores optimized for sparse linear algebra, 125 petaFLOPS* of AI compute, 44 GB of on-chip memory, 21 PB/s memory bandwidth, 214 Pb/s fabric bandwidth, TSMC 5nm process'. I/O Bandwidth 1.2 Tb/s. System Power: '27 kW max'. System Dimensions 16 RU, liquid cooling (DI water, 20+/-2C, 100 L/min). Rack: 2x CS-3, 55 kW rated / 47 kW average-for-inference. DISCREPANCY: accelerators/cerebras-wse-3.json records tdp_w 25000; the datasheet states 27 kW max system power for CS-3 (peak 27 kW on the NET rack page too). 25 kW is not the figure the datasheet gives.
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