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NVIDIA B100 SXM 192GB vs NVIDIA RTX PRO 4500 Blackwell 32GB

The B100 delivers 8.6x the FP8 throughput of the RTX PRO 4500 Blackwell (3,500 vs 406 TFLOPS dense). The B100 also carries 160 GB more memory (192 GB vs 32 GB).

B100: Blackwell, 2024 RTX PRO 4500 Blackwell: Blackwell, 2025
FP8 dense lead
8.6x
B100: 3,500 vs 406 TFLOPS
Memory
192 vs 32 GB
160 GB more for the B100
Bandwidth
8.0 TB/s vs 896 GB/s
B100 moves data faster
TDP
700 W vs 200 W
RTX PRO 4500 Blackwell draws 500 W less
See rental pricing from $0.72/hr Download comparison sheet

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NVIDIA B100 SXM 192GB vs NVIDIA RTX PRO 4500 Blackwell 32GB

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NVIDIA B100 SXM 192GB

Leads on FP8 Full specs →

What is the NVIDIA B100?

The B100 is a GPU from NVIDIA on the Blackwell architecture, an accelerator for AI training, inference and high-performance computing. It is an SXM module, the mezzanine format used in dense multi-GPU servers. B100 full specifications →

Can I rent the B100 in the cloud?

Flopper is not tracking any live rental listings for the B100 yet. The provider directory lists the clouds that rent comparable accelerators on demand. GPU cloud providers →

How does the B100 compare with other accelerators?

This page sets the B100 against the RTX PRO 4500 Blackwell. The B100 is the older generation of the two. Both are NVIDIA parts; the B100 is an SXM module while the RTX PRO 4500 Blackwell is a PCIe card. Flopper also compares it head to head with the B200 SXM 180GB, across every published precision, memory and power. B100 vs B200 SXM 180GB →

Where do the B100 figures come from?

NVIDIA published the B100 figures in marketing material rather than a datasheet, and Flopper has no independent confirmation of them. How Flopper verifies specifications →

NVIDIA RTX PRO 4500 Blackwell 32GB

Full specs →

What is the NVIDIA RTX PRO 4500 Blackwell?

The RTX PRO 4500 Blackwell is a GPU from NVIDIA on the Blackwell architecture, an accelerator for AI training, inference and high-performance computing. It is a PCIe add-in card, so it fits standard servers and workstations. RTX PRO 4500 Blackwell full specifications →

Can I rent the RTX PRO 4500 Blackwell in the cloud?

Yes. Cloud providers tracked by Flopper rent the RTX PRO 4500 Blackwell by the hour, and the pricing page compares their current rates and the price history side by side. RTX PRO 4500 Blackwell rental prices →

How does the RTX PRO 4500 Blackwell compare with other accelerators?

This page sets the RTX PRO 4500 Blackwell against the B100. The RTX PRO 4500 Blackwell is the newer generation of the two. Both are NVIDIA parts; the RTX PRO 4500 Blackwell is a PCIe card while the B100 is an SXM module. Flopper also compares it head to head with the RTX PRO 4500 Blackwell Server Edition, across every published precision, memory and power. RTX PRO 4500 Blackwell vs RTX PRO 4500 Blackwell Server Edition →

Where do the RTX PRO 4500 Blackwell figures come from?

Every RTX PRO 4500 Blackwell figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

Specifications

B100
RTX PRO 4500 Blackwell
Architecture
BlackwellBlackwell
Launch Year
20242025
Form Factor
SXMPCIe
Memory
192 GB32 GB
Memory Bandwidth
8.0 TB/s896 GB/s
TDP
700 W200 W
Process Node
4nm4nm

Performance (TFLOPS)

B100
RTX PRO 4500 Blackwell
30 TFLOPS No verified data available
60 TFLOPS 51 TFLOPS
875 TFLOPS
sparse not published
102 TFLOPS
203 TFLOPS sparse
1,750 TFLOPS
sparse not published
203 TFLOPS
406 TFLOPS sparse
1,750 TFLOPS
sparse not published
203 TFLOPS
406 TFLOPS sparse
3,500 TFLOPS
sparse not published
406 TFLOPS
811 TFLOPS sparse
FP6
No verified data available No verified data available
7,000 TFLOPS
sparse not published
809 TFLOPS
1,617 TFLOPS sparse
3,500 TOPS
sparse not published
 No verified data available

Figures are dense. Where a vendor publishes a figure it sits under the dense one and never decides a winner. Hover any precision for its definition, or read the GPU glossary.

FLOPS by Precision

What actually differs

The RTX PRO 4500 Blackwell is the newer part: Blackwell (2025) against the B100's Blackwell (2024).

The B100 carries 160 GB more memory (192 GB against 32 GB), so larger models fit on one GPU before you shard. Bandwidth is 8.0 TB/s against 896 GB/s, which sets the ceiling on decode speed.

Power is 700 W against 200 W, and at FP32 the RTX PRO 4500 Blackwell does more work per watt. Weight the FP8 and FP16 rows for LLM work and the FP64 row for HPC.

New to the terms? The glossary explains FP64, FP32, TF32, BF16, FP16, FP8, FP4, INT8, Sparsity and TFLOPS. For how the generations relate, see NVIDIA architectures explained.

Frequently asked questions

Is the B100 faster than the RTX PRO 4500 Blackwell?

At FP8 precision the B100 reaches 3,500 TFLOPS dense against 406 TFLOPS for the RTX PRO 4500 Blackwell. The performance table on this page lists every published precision for both GPUs.

Which should you choose, the B100 or the RTX PRO 4500 Blackwell?

Choose the B100 for training and high-throughput inference: it has 8.6x the FP8 throughput of the RTX PRO 4500 Blackwell. It also carries 160 GB more memory, so larger models fit on one GPU before you shard. The B100 draws 500 W more power, so budget for cooling and power delivery before you commit. Packaging differs too: the B100 is an SXM module while the RTX PRO 4500 Blackwell is a PCIe card, so check what your servers accept.

Which has more memory, the B100 or the RTX PRO 4500 Blackwell?

The B100 carries 192 GB of memory versus 32 GB for the RTX PRO 4500 Blackwell. Memory bandwidth is 8.0 TB/s for the B100 and 896 GB/s for the RTX PRO 4500 Blackwell.

How much power do the B100 and the RTX PRO 4500 Blackwell draw?

The B100 is rated at 700 W TDP and the RTX PRO 4500 Blackwell at 200 W. On FP32 throughput per watt, the RTX PRO 4500 Blackwell is the more efficient part.

How much do the B100 and the RTX PRO 4500 Blackwell cost to rent?

Live cloud listings tracked by Flopper price no live listings yet for the B100, and the RTX PRO 4500 Blackwell from $0.72 per GPU-hour across 3 providers. The rental section on this page links to every provider, rate and the price history for each GPU.

Where to Rent

NVIDIA B100 SXM 192GB

No live rental listings tracked for the B100 yet.

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NVIDIA RTX PRO 4500 Blackwell 32GB

Rent from

$0.72 / GPU-hr

Lowest of 8 live listings across 3 providers · median $0.72

See all RTX PRO 4500 Blackwell rental prices →

Price history and every provider on the pricing page. Some links are affiliate links.

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