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NVIDIA H20 vs NVIDIA GH200
Side-by-side comparison of specifications, performance, and efficiency.
NVIDIA H20
Architecture
Hopper
Year
2025
VRAM
141 GB
TDP
400 W
NVIDIA GH200
Architecture
Hopper
Year
2023
VRAM
468 GB
TDP
1.0 kW
Specifications
NVIDIA H20 NVIDIA GH200
Architecture
Hopper Hopper
Launch Year
2025 2023
Form Factor
SXM SXM
VRAM
141 GB468 GB
Memory Bandwidth
4.0 TB/s900 GB/s
TDP
400 W1.0 kW
Process Node
4nm 4nm
| Spec | NVIDIA H20 | NVIDIA GH200 |
|---|---|---|
| Architecture | Hopper | Hopper |
| Launch Year | 2025 | 2023 |
| Form Factor | SXM | SXM |
| VRAM | 141 GB | 468 GB |
| Memory Bandwidth | 4.0 TB/s | 900 GB/s |
| TDP | 400 W | 1.0 kW |
| Process Node | 4nm | 4nm |
Performance (TFLOPS)
NVIDIA H20 NVIDIA GH200
FP64
1.0 TFlops34.0 TFlops
FP32
44.0 TFlops67.0 TFlops
FP16
148.0 TFlops989.5 TFlops
BF16
148.0 TFlops989.5 TFlops
FP8
296.0 TFlops1979.0 TFlops
INT8
296.0 TFlops1979.0 TFlops
| Precision | NVIDIA H20 | NVIDIA GH200 |
|---|---|---|
| FP64 | 1.0 TFlops | 34.0 TFlops |
| FP32 | 44.0 TFlops | 67.0 TFlops |
| FP16 | 148.0 TFlops | 989.5 TFlops |
| BF16 | 148.0 TFlops | 989.5 TFlops |
| FP8 | 296.0 TFlops | 1979.0 TFlops |
| INT8 | 296.0 TFlops | 1979.0 TFlops |
FLOPS by Precision
Efficiency — TDP vs FP32 Performance
Analysis
Most Efficient
NVIDIA
H20
0.11 TFLOPS/W
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