Blackwell
NVIDIA B200 180GB
wins
5
The B200 is NVIDIA's Blackwell flagship — 4.5 PFLOPS FP16 and 8 TB/s memory bandwidth make it the most powerful GPU available for AI training at scale.
Hopper
NVIDIA H100 80GB
wins
1
The NVIDIA H100 is the gold standard for AI training and inference. With 80GB HBM3 memory and NVLink 4.0 support, it dominates large-model training and multi-GPU clusters.
Performance comparison
Visual bars — winner highlighted
NVIDIA B200 180GB
Metric
NVIDIA H100 80GB
FP16 TFLOPS
Bandwidth
VRAM
TDP (lower=better)
TFLOPS/watt
GB/s per watt
TFLOPS/$
FP16 TFLOPS ÷ best on-demand $/hr
GB/s per $
Memory bandwidth ÷ best on-demand $/hr
Full specification table
| Spec | NVIDIA B200 180GB | NVIDIA H100 80GB |
|---|---|---|
| Architecture | Blackwell | Hopper |
| VRAM | 180 GB HBM3e | 80 GB HBM3 |
| VRAM type | HBM3e | HBM3 |
| Memory bandwidth | 8,000 GB/s | 3,350 GB/s |
| FP16 TFLOPS | 4,500 TFLOPS | 989 TFLOPS |
| TDP | 1,000 W | 700 W |
| TFLOPS/watt | 4.50 T/W | 1.41 T/W |
| GB/s per watt | 8.00 GB/s/W | 4.79 GB/s/W |
| NVLink | Yes | Yes |
| Release year | 2024 | 2022 |
| Best cloud price | $3.50/hr | $2.85/hr |
| TFLOPS/$ | 1285.7 | 347.0 |
| GB/s per $ | 2286 | 1175 |
Live cloud pricing
On-demand pricing across providers — updated in real time
NVIDIA B200 180GB
NVIDIA H100 80GB
Power efficiency analysis
TFLOPS/watt and GB/s/watt — critical for data center TCO
NVIDIA B200 180GB
NVIDIA H100 80GB
TFLOPS/watt measures compute efficiency — how much AI throughput you get per watt of power consumed. For data centers with PUE of 1.2–1.5, a 10% improvement in TFLOPS/watt translates directly to lower electricity costs and cooling requirements. GB/s/watt measures memory bandwidth efficiency, which is the binding constraint for memory-bound LLM inference workloads.
Performance-per-dollar
TFLOPS/$ and GB/s/$ at current best cloud prices
NVIDIA B200 180GB
NVIDIA H100 80GB
TFLOPS/$ = FP16 TFLOPS ÷ best on-demand $/hr. Higher is better — more compute per dollar. GB/s/$ = memory bandwidth ÷ best on-demand $/hr. For memory-bound inference workloads (most LLM serving), GB/s/$ is often a better predictor of cost-efficiency than TFLOPS/$. Prices are live from the Compute Comparison API and update in real time.
Workload Cost Comparison
Total job cost = best on-demand $/hr × GPU count × hours
NVIDIA B200 180GB costs 1.2× more at current best prices. NVIDIA B200 180GB has 1803GB VRAM vs 803GB — larger models fit without offloading; 2.4× higher memory bandwidth (8000 vs 3350 GB/s) improves token throughput for memory-bound inference.
| Workload | Scale | NVIDIA B200 180GB | NVIDIA H100 80GB |
|---|---|---|---|
| 7B LLM fine-tune | 8× GPU, 24 h | $672 | $547▼ |
| 70B LLM fine-tune | 64× GPU, 72 h | $16k | $13k▼ |
| Inference server | 1× GPU, 730 h | $2.6k | $2.1k▼ |
| Image gen batch | 4× GPU, 8 h | $112 | $91▼ |
Based on current best on-demand prices. Spot pricing typically 40–70% lower. Actual cost depends on provider, region, and availability.
When to choose each GPU
Choose NVIDIA B200 180GB for:
- Next-gen LLM training
- Trillion-parameter models
- AI factories
Weaknesses / Limitations
- Extremely limited availability — primarily reserved for hyperscalers
- 1,000W TDP requires specialized power and liquid cooling
- Highest cost per GPU of any currently available card
Choose NVIDIA H100 80GB for:
- LLM training
- Large-scale inference
- HPC workloads
Weaknesses / Limitations
- Highest rental cost of any widely available GPU
- SXM form factor requires NVLink-capable server chassis
- 700W TDP demands high-density power and cooling infrastructure
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