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MCS · Rigs · Compare

Side-by-side, with the numbers that matter.

Two rigs, one table. Higher numbers win in cobalt; TDP and price flip.

0 of 38 fields comparable

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SpecAMD Instinct MI355XSambaNova SN40L Reconfigurable Dataflow Unit
Bf16 Matrix Pflops Dense2.5—
Bf16 Matrix Pflops Sparse5—
Bf16 Tflops PER Socket—638
Compute Units256—
Coolingdirect liquid cooling (air-cooled option available)—
Current Family Listed—SN50, SN40
DDR Bandwidth GB S—200
Ddr5 Capacity TB—1.5
Form factorOAM—
Fp16 Matrix Pflops Dense2.5—
Fp16 Matrix Pflops Sparse5—
Fp32 Vector Tflops157.3—
Fp64 Matrix Tflops78.6—
FP8 Matrix Pflops Dense5—
FP8 Matrix Pflops Sparse10.1—
HBM (GB)288—
HBM Bandwidth TB S—1.8
HBM TypeHBM3E—
Hbm3 Capacity GB—64
Helios Gpus PER Rack72—
Memory bandwidth (TB/s)8—
Mxfp4 Matrix Pflops10.1—
Mxfp6 Matrix Pflops10.1—
ON Chip Sram MB—520
Packaging—3x CoWoS-S, 2 accelerator dies
Pattern Compute Units—1,040
Pcie GEN5—
Process Node—TSMC 5nm
Process Node NM3—
Status Checked—2026-09-24
Successor—SN50 (fifth-generation RDU)
Successor Cdna Version5—
Successor FamilyAMD Instinct MI400 Series (MI455X)—
Successor Introduced—2026-02-24
Successor Launch2026-07-23—
Successor Mi455x Bandwidth TB S23.3—
Successor Mi455x Hbm4 GB432—
TBP Watts1,400—