Specifications Compared
| Spec | B200 | RTX 3090 |
|---|---|---|
| TDP | 1000W | 350W |
| VRAM | 180-192 GB | 24 GB |
| CUDA Cores | 18,432 | 10,496 |
| FP4 (dense) | 9,000 TFLOPS | Not published |
| FP8 (dense) | 4,500 TFLOPS | Not published |
| Memory Type | HBM3e | GDDR6X |
| Architecture | Blackwell | Ampere |
| FP16 (dense) | 2,250 TFLOPS | 71 TFLOPS |
| Form Factors | SXM, NVL | PCIe |
| INT8 (dense) | 4,500 TOPS | 284 TOPS |
| Interconnect | NVLink, PCIe 6.0, InfiniBand | NVLink, PCIe 4.0 |
| Tensor Cores | 576 | 328 |
| FP32 Performance | 75 TFLOPS | 35.6 TFLOPS |
| FP64 Performance | 37 TFLOPS | Not published |
| Memory Bandwidth | 8,000 GB/s | 936 GB/s |
| FP4 (with sparsity) | 18,000 TFLOPS | Not published |
| FP8 (with sparsity) | 9,000 TFLOPS | Not published |
| FP16 (with sparsity) | 4,500 TFLOPS | 142 TFLOPS |
| INT8 (with sparsity) | 9,000 TOPS | 568 TOPS |
Performance Analysis
The FP16 dense performance of 2250 TFLOPS on the B200 stands against the FP16 dense performance of 71 TFLOPS on the RTX 3090. This difference indicates that the B200 completes matrix operations in training and inference at a higher rate when both figures remain dense. The memory bandwidth of 8000 GB/s on the B200 compared with 936 GB/s on the RTX 3090 supports larger batch sizes before data movement becomes limiting. The FP32 performance of 75 TFLOPS on the B200 compared with 35.6 TFLOPS on the RTX 3090 further separates the two devices for precision sensitive scientific workloads.
Current On-Demand Offers
Cheapest secure on-demand offer per provider that is reported in stock right now, per GPU per hour; multi-GPU instances show the whole-instance price alongside. Deploy opens the DeployGPU console for providers on the platform, otherwise the provider's own site. Stock is rechecked every minute.
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When to Choose the B200
The B200 suits LLM training runs that require the 180 to 192 GB HBM3e capacity and the FP16 dense throughput of 2250 TFLOPS. Its 8000 GB/s bandwidth also fits inference serving of large models where batch sizes exceed the limits of 24 GB VRAM.
When to Choose the RTX 3090
The RTX 3090 suits fine tuning tasks that fit within 24 GB GDDR6X and operate under the 350W TDP limit. Its FP16 dense performance of 71 TFLOPS remains adequate for Stable Diffusion workloads that do not require the higher bandwidth of 8000 GB/s.
Use Cases
The B200 supplies 2250 TFLOPS dense FP16 and 180 to 192 GB HBM3e memory that accommodate large model training.
The B200 delivers 4500 TFLOPS dense FP8 and 8000 GB/s bandwidth that support high throughput serving.
The RTX 3090 operates at 350W TDP and provides 71 TFLOPS dense FP16 sufficient for parameter updates within 24 GB VRAM.
The RTX 3090 meets the requirements of image generation at 35.6 TFLOPS FP32 inside its 24 GB GDDR6X capacity.
The B200 lists 75 TFLOPS FP32 and 8000 GB/s bandwidth that accelerate simulations needing high memory throughput.
Frequently Asked Questions
What is the memory difference between B200 and RTX 3090?▾
The B200 contains 180 to 192 GB HBM3e while the RTX 3090 contains 24 GB GDDR6X. The bandwidth figures are 8000 GB/s versus 936 GB/s.
How does FP16 performance compare on B200 versus RTX 3090?▾
The B200 achieves 2250 TFLOPS dense FP16 and the RTX 3090 achieves 71 TFLOPS dense FP16. The same devices reach 4500 TFLOPS with sparsity and 142 TFLOPS with sparsity respectively.
What TDP values apply to each GPU?▾
The B200 carries a TDP of 1000W and the RTX 3090 carries a TDP of 350W. These values affect system power and cooling design.
Which GPU handles larger batch sizes during inference?▾
The B200 supports larger batches through its 180 to 192 GB capacity and 8000 GB/s bandwidth while the RTX 3090 remains limited to 24 GB and 936 GB/s.
Does the B200 offer higher INT8 throughput than the RTX 3090?▾
The B200 provides 4500 TOPS dense INT8 and the RTX 3090 provides 284 TOPS dense INT8. The figures with sparsity are 9000 TOPS and 568 TOPS.
What interconnect options exist on each device?▾
The B200 supports NVLink along with PCIe 6.0 and InfiniBand. The RTX 3090 supports NVLink along with PCIe 4.0.
Which is cheaper to rent, the B200 or the RTX 3090?▾
Cloud rental prices for both the B200 and RTX 3090 vary by provider, configuration, and availability. This page shows live pricing from 25+ providers updated every 60 seconds. Scroll to the Live Cloud Pricing section to compare current rates.
How much VRAM does the B200 have compared to the RTX 3090?▾
The B200 has 180 to 192 GB of HBM3e memory. The RTX 3090 has 24 GB of GDDR6X memory.
Can I find B200 and RTX 3090 GPUs available to rent right now?▾
Yes. This page shows real-time availability across 25+ cloud GPU providers. The Live Cloud Pricing section displays only in-stock offers with current pricing.
What is the main difference between the B200 and the RTX 3090?▾
The B200 uses the Blackwell architecture (2024) while the RTX 3090 uses Ampere (2020). The B200 delivers 31.7x the dense FP16 throughput (2,250 vs 71 TFLOPS, both without sparsity) and 8.5x the memory bandwidth of the RTX 3090.
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Related comparisons
How this page is made
- Specifications come from the NVIDIA, AMD and Intel datasheets for the B200 and the RTX 3090. Dense and sparse throughput are listed separately.
- Prices and availability are live: every offer shown is an in-stock, on-demand listing from a provider we track, rechecked every minute.
- The written comparison (overview, performance notes, when to choose each card, verdict, use cases and FAQ) was drafted with an AI model from the specification table above and passed an automated check that rejects any figure not in that table. It was last generated on . It contains no prices; those are always read live.
- Read how we collect the data, or report an error on this page.
Next steps
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