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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.

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SpecAMD Instinct MI355XGroq Language Processing Unit
Bf16 Matrix Pflops Dense2.5—
Bf16 Matrix Pflops Sparse5—
Chip TO Chip Links—11
Compute Units256—
Coolingdirect liquid cooling (air-cooled option available)—
DOJ Probe Reported—2026-09-10
Form factorOAMPCIe Gen4 x16
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—
Groq3 LPX Full Production—2026-08-24
Groqcard Sales Ended Reported—2024-04-05
HBM (GB)288—
HBM TypeHBM3E—
Helios Gpus PER Rack72—
Memory bandwidth (TB/s)8—
Mxfp4 Matrix Pflops10.1—
Mxfp6 Matrix Pflops10.1—
Nvidia Consideration AT Closing USD Billion—13
Nvidia Consideration Deferred USD Billion—4
Nvidia License Agreement—2025-12-24
ON Chip Sram MB—230
ON DIE Memory Bandwidth TB S—80
Pcie GEN5—
Peak Fp16 Tflops—188
Peak Int8 Tops—750
Process Node—14nm
Process Node NM3—
Status Checked—2026-09-24
Successor Cdna Version5—
Successor FamilyAMD Instinct MI400 Series (MI455X)—
Successor Launch2026-07-23—
Successor Mi455x Bandwidth TB S23.3—
Successor Mi455x Hbm4 GB432—
TBP Watts1,400—