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NVIDIA GB300 Grace Blackwell Ultra Desktop Superchip 252GB vs NVIDIA GB300 NVL72 GPU 288GB

The GB300 Grace Blackwell Ultra Desktop Superchip 252GB and the GB300 NVL72 GPU 288GB deliver near-identical FP8 throughput (5,000 vs 5,000 TFLOPS dense). The GB300 NVL72 GPU 288GB also carries 36 GB more memory (288 GB vs 252 GB).

GB300 Grace Blackwell Ultra Desktop Superchip 252GB: Blackwell Ultra, 2025 GB300 NVL72 GPU 288GB: Blackwell Ultra, 2025
Memory
252 vs 288 GB
36 GB more for the GB300 NVL72 GPU 288GB
Bandwidth
7.1 TB/s vs 8.0 TB/s
GB300 NVL72 GPU 288GB moves data faster
See rental pricing from $5.74/hr Download comparison sheet

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NVIDIA GB300 Grace Blackwell Ultra Desktop Superchip 252GB vs NVIDIA GB300 NVL72 GPU 288GB

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NVIDIA GB300 Grace Blackwell Ultra Desktop Superchip 252GB

Full specs →

What is the NVIDIA GB300 Grace Blackwell Ultra Desktop Superchip 252GB?

The GB300 Grace Blackwell Ultra Desktop Superchip 252GB is a GPU from NVIDIA on the Blackwell Ultra 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. GB300 Grace Blackwell Ultra Desktop Superchip 252GB full specifications →

Can I rent the GB300 Grace Blackwell Ultra Desktop Superchip 252GB in the cloud?

Flopper is not tracking any live rental listings for the GB300 Grace Blackwell Ultra Desktop Superchip 252GB yet. The provider directory lists the clouds that rent comparable accelerators on demand. GPU cloud providers →

How does the GB300 Grace Blackwell Ultra Desktop Superchip 252GB compare with other accelerators?

This page sets the GB300 Grace Blackwell Ultra Desktop Superchip 252GB against the GB300 NVL72 GPU 288GB. Both parts launched in the same year. Both are NVIDIA parts; the GB300 Grace Blackwell Ultra Desktop Superchip 252GB is a superchip while the GB300 NVL72 GPU 288GB is an SXM module. The compare tool builds the same comparison for any two parts in the catalogue. All GPU comparisons →

Where do the GB300 Grace Blackwell Ultra Desktop Superchip 252GB figures come from?

Every GB300 Grace Blackwell Ultra Desktop Superchip 252GB figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

NVIDIA GB300 NVL72 GPU 288GB

Full specs →

What is the NVIDIA GB300 NVL72 GPU 288GB?

The GB300 NVL72 GPU 288GB is a GPU from NVIDIA on the Blackwell Ultra 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. GB300 NVL72 GPU 288GB full specifications →

Can I rent the GB300 NVL72 GPU 288GB in the cloud?

Yes. Cloud providers tracked by Flopper rent the GB300 NVL72 GPU 288GB by the hour, and the pricing page compares their current rates and the price history side by side. GB300 NVL72 GPU 288GB rental prices →

How does the GB300 NVL72 GPU 288GB compare with other accelerators?

This page sets the GB300 NVL72 GPU 288GB against the GB300 Grace Blackwell Ultra Desktop Superchip 252GB. Both parts launched in the same year. Both are NVIDIA parts; the GB300 NVL72 GPU 288GB is an SXM module while the GB300 Grace Blackwell Ultra Desktop Superchip 252GB is a superchip. Flopper also compares it head to head with the GB200 NVL72 GPU 186GB and H100 SXM5 80GB, across every published precision, memory and power. GB300 NVL72 GPU 288GB vs GB200 NVL72 GPU 186GB →

Where do the GB300 NVL72 GPU 288GB figures come from?

Every GB300 NVL72 GPU 288GB figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

Specifications

GB300 Grace Blackwell Ultra Desktop Superchip 252GB
GB300 NVL72 GPU 288GB
Architecture
Blackwell UltraBlackwell Ultra
Launch Year
20252025
Form Factor
SuperchipSXM
Memory
252 GB288 GB
Memory Bandwidth
7.1 TB/s8.0 TB/s
TDP
——
Process Node
4nm4nm

Performance (TFLOPS)

GB300 Grace Blackwell Ultra Desktop Superchip 252GB
GB300 NVL72 GPU 288GB
1.3 TFLOPS 1.4 TFLOPS
80 TFLOPS 83 TFLOPS
1,250 TFLOPS
2,500 TFLOPS sparse
1,250 TFLOPS
2,500 TFLOPS sparse
2,500 TFLOPS
5,000 TFLOPS sparse
2,500 TFLOPS
5,000 TFLOPS sparse
2,500 TFLOPS
5,000 TFLOPS sparse
2,500 TFLOPS
5,000 TFLOPS sparse
5,000 TFLOPS
10,000 TFLOPS sparse
5,000 TFLOPS
10,000 TFLOPS sparse
FP6
5,000 TFLOPS
10,000 TFLOPS sparse
5,000 TFLOPS
10,000 TFLOPS sparse
15,000 TFLOPS
20,000 TFLOPS sparse
15,000 TFLOPS
20,000 TFLOPS sparse
165 TOPS
330 TOPS sparse
165 TOPS
330 TOPS sparse

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

Both launched in 2025, the GB300 Grace Blackwell Ultra Desktop Superchip 252GB on Blackwell Ultra and the GB300 NVL72 GPU 288GB on Blackwell Ultra.

The GB300 NVL72 GPU 288GB carries 36 GB more memory (288 GB against 252 GB), so larger models fit on one GPU before you shard. Bandwidth is 7.1 TB/s against 8.0 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

Is the GB300 Grace Blackwell Ultra Desktop Superchip 252GB faster than the GB300 NVL72 GPU 288GB?

They are close on paper: both deliver about 5,000 TFLOPS of dense FP8 throughput. Memory, bandwidth, and power are the deciding differences.

Which should you choose, the GB300 Grace Blackwell Ultra Desktop Superchip 252GB or the GB300 NVL72 GPU 288GB?

On raw FP8 throughput the GB300 Grace Blackwell Ultra Desktop Superchip 252GB and the GB300 NVL72 GPU 288GB are level, so the decision rests on memory, power and price. Choose the GB300 NVL72 GPU 288GB when the model has to fit on one GPU: it carries 36 GB more memory. Packaging differs too: the GB300 Grace Blackwell Ultra Desktop Superchip 252GB is a superchip while the GB300 NVL72 GPU 288GB is an SXM module, so check what your servers accept.

Which has more memory, the GB300 Grace Blackwell Ultra Desktop Superchip 252GB or the GB300 NVL72 GPU 288GB?

The GB300 NVL72 GPU 288GB carries 288 GB of memory versus 252 GB for the GB300 Grace Blackwell Ultra Desktop Superchip 252GB. Memory bandwidth is 7.1 TB/s for the GB300 Grace Blackwell Ultra Desktop Superchip 252GB and 8.0 TB/s for the GB300 NVL72 GPU 288GB.

How much do the GB300 Grace Blackwell Ultra Desktop Superchip 252GB and the GB300 NVL72 GPU 288GB cost to rent?

Live cloud listings tracked by Flopper price no live listings yet for the GB300 Grace Blackwell Ultra Desktop Superchip 252GB, and the GB300 NVL72 GPU 288GB from $5.74 per GPU-hour across 2 providers. The rental section on this page links to every provider, rate and the price history for each GPU.

Where to Rent

NVIDIA GB300 Grace Blackwell Ultra Desktop Superchip 252GB

No live rental listings tracked for the GB300 Grace Blackwell Ultra Desktop Superchip 252GB yet.

Browse GPU cloud providers

NVIDIA GB300 NVL72 GPU 288GB

Rent from

$5.74 / GPU-hr

Lowest of 3 live listings across 2 providers

See all GB300 NVL72 GPU 288GB rental prices →

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

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Open in Full Compare Tool → GB300 Grace Blackwell Ultra Desktop Superchip 252GB full specs GB300 NVL72 GPU 288GB full specs Estimate cluster cost in the calculator →

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