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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.

Rig A

Groq Language Processing Unit

Groq · accelerator

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Rig B

AMD Instinct MI355X

AMD · accelerator

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0 of 38 fields comparable

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SpecGroq Language Processing UnitAMD Instinct MI355X
Bf16 Matrix Pflops Dense—2.5
Bf16 Matrix Pflops Sparse—5
Chip TO Chip Links11—
Compute Units—256
Cooling—direct liquid cooling (air-cooled option available)
DOJ Probe Reported2026-09-10—
Form factorPCIe Gen4 x16OAM
Fp16 Matrix Pflops Dense—2.5
Fp16 Matrix Pflops Sparse—5
Fp32 Vector Tflops—157.3
Fp64 Matrix Tflops—78.6
FP8 Matrix Pflops Dense—5
FP8 Matrix Pflops Sparse—10.1
Groq3 LPX Full Production2026-08-24—
Groqcard Sales Ended Reported2024-04-05—
HBM (GB)—288
HBM Type—HBM3E
Helios Gpus PER Rack—72
Memory bandwidth (TB/s)—8
Mxfp4 Matrix Pflops—10.1
Mxfp6 Matrix Pflops—10.1
Nvidia Consideration AT Closing USD Billion13—
Nvidia Consideration Deferred USD Billion4—
Nvidia License Agreement2025-12-24—
ON Chip Sram MB230—
ON DIE Memory Bandwidth TB S80—
Pcie GEN—5
Peak Fp16 Tflops188—
Peak Int8 Tops750—
Process Node14nm—
Process Node NM—3
Status Checked2026-09-24—
Successor Cdna Version—5
Successor Family—AMD Instinct MI400 Series (MI455X)
Successor Launch—2026-07-23
Successor Mi455x Bandwidth TB S—23.3
Successor Mi455x Hbm4 GB—432
TBP Watts—1,400