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NVIDIA GB200 Grace Blackwell Superchip 372GB vs NVIDIA RTX PRO 5500 Blackwell Workstation Edition

Side-by-side specifications, performance, and rental pricing for datacenter AI workloads.

GB200: Blackwell, 2024 RTX PRO 5500 Blackwell: Blackwell, 2026
Memory
372 vs 84 GB
288 GB more for the GB200
Bandwidth
16.0 TB/s vs 1.4 TB/s
GB200 moves data faster
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NVIDIA GB200 Grace Blackwell Superchip 372GB vs NVIDIA RTX PRO 5500 Blackwell Workstation Edition

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NVIDIA GB200 Grace Blackwell Superchip 372GB

Full specs →

What is the NVIDIA GB200?

The GB200 is a GPU from NVIDIA on the Blackwell architecture, an accelerator for AI training, inference and high-performance computing. It is a superchip that pairs a CPU and accelerators on one board for rack-scale systems. GB200 full specifications →

Can I rent the GB200 in the cloud?

Flopper is not tracking any live rental listings for the GB200 yet. The provider directory lists the clouds that rent comparable accelerators on demand. GPU cloud providers →

How does the GB200 compare with other accelerators?

This page sets the GB200 against the RTX PRO 5500 Blackwell. The GB200 is the older generation of the two. Both are NVIDIA parts; the GB200 is a superchip while the RTX PRO 5500 Blackwell is a PCIe card. The compare tool builds the same comparison for any two parts in the catalogue. All GPU comparisons →

Where do the GB200 figures come from?

Every GB200 figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

NVIDIA RTX PRO 5500 Blackwell Workstation Edition

Full specs →

What is the NVIDIA RTX PRO 5500 Blackwell?

The RTX PRO 5500 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. It has been announced but is not yet shipping. RTX PRO 5500 Blackwell full specifications →

Can I rent the RTX PRO 5500 Blackwell in the cloud?

Flopper is not tracking any live rental listings for the RTX PRO 5500 Blackwell yet. The provider directory lists the clouds that rent comparable accelerators on demand. GPU cloud providers →

How does the RTX PRO 5500 Blackwell compare with other accelerators?

This page sets the RTX PRO 5500 Blackwell against the GB200. The RTX PRO 5500 Blackwell is the newer generation of the two. Both are NVIDIA parts; the RTX PRO 5500 Blackwell is a PCIe card while the GB200 is a superchip. Flopper also compares it head to head with the RTX PRO 6000 Blackwell Workstation Edition, RTX PRO 5000 Blackwell 72GB and GeForce RTX 5090 32GB, across every published precision, memory and power. RTX PRO 5500 Blackwell vs RTX PRO 6000 Blackwell Workstation Edition →

Where do the RTX PRO 5500 Blackwell figures come from?

NVIDIA published the RTX PRO 5500 Blackwell figures in marketing material rather than a datasheet, and Flopper has no independent confirmation of them. How Flopper verifies specifications →

Specifications

GB200
RTX PRO 5500 Blackwell
Architecture
BlackwellBlackwell
Launch Year
20242026
Form Factor
SuperchipPCIe
Memory
372 GB84 GB
Memory Bandwidth
16.0 TB/s1.4 TB/s
TDP
—600 W
Process Node
4nm4nm

Performance (TFLOPS)

GB200
RTX PRO 5500 Blackwell
80 TFLOPS No verified data available
160 TFLOPS No verified data available
2,500 TFLOPS
5,000 TFLOPS sparse
 No verified data available
5,000 TFLOPS
10,000 TFLOPS sparse
 No verified data available
5,000 TFLOPS
10,000 TFLOPS sparse
 No verified data available
10,000 TFLOPS
20,000 TFLOPS sparse
 No verified data available
FP6
10,000 TFLOPS
20,000 TFLOPS sparse
 No verified data available
20,000 TFLOPS
40,000 TFLOPS sparse
 No verified data available
10,000 TOPS
20,000 TOPS sparse
 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 5500 Blackwell is the newer part: Blackwell (2026) against the GB200's Blackwell (2024).

The GB200 carries 288 GB more memory (372 GB against 84 GB), so larger models fit on one GPU before you shard. Bandwidth is 16.0 TB/s against 1.4 TB/s, which sets the ceiling on decode speed.

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

Which should you choose, the GB200 or the RTX PRO 5500 Blackwell?

Choose the GB200 when the model has to fit on one GPU: it carries 288 GB more memory. Packaging differs too: the GB200 is a superchip while the RTX PRO 5500 Blackwell is a PCIe card, so check what your servers accept.

Which has more memory, the GB200 or the RTX PRO 5500 Blackwell?

The GB200 carries 372 GB of memory versus 84 GB for the RTX PRO 5500 Blackwell. Memory bandwidth is 16.0 TB/s for the GB200 and 1.4 TB/s for the RTX PRO 5500 Blackwell.

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