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

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

Rig A

NVIDIA · workstation

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Rig B

AMD · accelerator

Change

0 of 51 fields comparable

Spec	NVIDIA DGX B200	AMD Instinct MI355X
Bf16 Matrix Pflops Dense	—	2.5
Bf16 Matrix Pflops Sparse	—	5
Bluefield3 Dpus	2	—
Compute Units	—	256
Cooling	—	direct liquid cooling (air-cooled option available)
CPU Base GHZ	2.1	—
CPU Count	2	—
CPU MAX Boost GHZ	4	—
CPU Model	Intel Xeon Platinum 8570	—
Form factor	—	OAM
Fp16 Matrix Pflops Dense	—	2.5
Fp16 Matrix Pflops Sparse	—	5
Fp32 Vector Tflops	—	157.3
FP4 Pflops Dense	72	—
FP4 Pflops Sparse	144	—
Fp64 Matrix Tflops	—	78.6
FP8 Matrix Pflops Dense	—	5
FP8 Matrix Pflops Sparse	—	10.1
FP8 Pflops	72	—
Gpus	8	—
HBM (GB)	—	288
HBM Bandwidth TB S	64	—
HBM Type	—	HBM3E
Height MM	444	—
Helios Gpus PER Rack	—	72
Internal Storage TB	30.72	—
Length MM	897.1	—
MAX Power KW	14.3	—
Memory bandwidth (TB/s)	—	8
Mxfp4 Matrix Pflops	—	10.1
Mxfp6 Matrix Pflops	—	10.1
Networking Osfp Ports	4	—
Nvswitch Count	2	—
OS	NVIDIA DGX OS / Ubuntu	—
OS Storage TB	3.8	—
Pcie GEN	—	5
PER Port Gbps MAX	400	—
Process Node NM	—	3
Rack Units	10	—
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
System Memory GB Default	2,048	—
System Memory GB MAX	4,096	—
TBP Watts	—	1,400
Total CPU Cores	112	—
Total Hbm3e GB	1,440	—
Total Nvlink Bandwidth TB S	14.4	—
Width MM	482.2	—