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

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0 of 37 fields comparable

Spec	NVIDIA DGX Spark	AMD Instinct MI300X
Bf16 Matrix Tflops Dense	—	1,307.4
Compute Units	—	304
CPU Breakdown	10x Arm Cortex-X925 + 10x Arm Cortex-A725	—
CPU Cores Total	20	—
Dimensions MM	150 x 150 x 50.5	—
Ethernet	1x 10 GbE RJ-45	—
Form factor	—	OAM
Fp16 Matrix Tflops Dense	—	1,307.4
Fp32 Vector Tflops	—	163.4
FP4 Pflops Sparse	1	—
Fp64 Matrix Tflops	—	163.4
Fp64 Vector Tflops	—	81.7
FP8 Matrix Tflops Dense	—	2,614.9
FP8 Matrix Tflops Sparse	—	5,229.8
Gb10 TDP Watts	140	—
GPU Arch	Blackwell, 5th-gen Tensor Cores, 4th-gen RT Cores	—
HBM (GB)	—	192
HBM Type	—	HBM3
INT8 TOPS (dense)	—	2,614.9
Matrix Cores	—	1,216
Memory bandwidth (GB/s)	273	—
Memory bandwidth (TB/s)	—	5.3
Memory Interface BIT	256	—
Memory type	LPDDR5X	—
MSRP (USD)↓ better	4,699	—
NIC	ConnectX-7 @ 200 Gbps	—
Pcie GEN	—	5
Process Node NM	—	5
PSU Watts	240	—
Storage	4TB NVMe M.2 self-encrypting	—
Superchip	NVIDIA GB10 Grace Blackwell	—
TBP Watts	—	750
Tf32 Matrix Tflops Dense	—	653.7
Tf32 Matrix Tflops Sparse	—	1,307.4
Unified Memory GB	128	—
Weight KG	1.2	—
Wireless	Wi-Fi 7, Bluetooth 5.4	—