NVIDIA H100 SXM5 80GB vs NVIDIA H20 141GB HBM3e

The H100 delivers 6.7x the FP8 throughput of the H20 (1,979 vs 296 TFLOPS dense). The H20 counters with 61 GB more memory (141 GB vs 80 GB).

H100: Hopper, 2022 H20: Hopper, 2025

FP8 dense lead

6.7x

H100: 1,979 vs 296 TFLOPS

Memory

80 vs 141 GB

61 GB more for the H20

Bandwidth

3.4 TB/s vs 4.0 TB/s

H20 moves data faster

TDP

700 W vs 400 W

H20 draws 300 W less

See rental pricing from $0.79/hr Download comparison sheet Printable version →

NVIDIA H100 SXM5 80GB

Leads on FP8 Full specs →

What is the NVIDIA H100?

The H100 is a GPU from NVIDIA on the Hopper 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. H100 full specifications →

Can I rent the H100 in the cloud?

Yes. Cloud providers tracked by Flopper rent the H100 by the hour, and the pricing page compares their current rates and the price history side by side. H100 rental prices →

How does the H100 compare with other accelerators?

This page sets the H100 against the H20. The H100 is the older generation of the two. Both are NVIDIA parts, and both ship as an SXM module, so they fit the same class of system. Flopper also compares it head to head with the A100 SXM4 80GB, H200 SXM 141GB and Instinct MI300X 192GB, across every published precision, memory and power. H100 vs A100 SXM4 80GB →

Where do the H100 figures come from?

Every H100 figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

NVIDIA H20 141GB HBM3e

Full specs →

What is the NVIDIA H20?

The H20 is a GPU from NVIDIA on the Hopper 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. H20 full specifications →

Can I rent the H20 in the cloud?

Flopper is not tracking any live rental listings for the H20 yet. The provider directory lists the clouds that rent comparable accelerators on demand. GPU cloud providers →

How does the H20 compare with other accelerators?

This page sets the H20 against the H100. The H20 is the newer generation of the two. Both are NVIDIA parts, and both ship as an SXM module, so they fit the same class of system. The compare tool builds the same comparison for any two parts in the catalogue. All GPU comparisons →

Where do the H20 figures come from?

NVIDIA published the H20 figures in marketing material rather than a datasheet, and Flopper has no independent confirmation of them. How Flopper verifies specifications →

Specifications

H100

H20

Architecture

HopperHopper

Launch Year

20222025

Form Factor

SXMSXM

Memory

80 GB141 GB

Memory Bandwidth

3.4 TB/s4.0 TB/s

TDP

700 W400 W

Process Node

4nm4nm

Spec

H100

H20

Architecture HopperHopper

Launch Year 20222025

Form Factor SXMSXM

Memory 80 GB141 GB

Memory Bandwidth 3.4 TB/s4.0 TB/s

TDP 700 W400 W

Process Node 4nm4nm

Performance (TFLOPS)

H100

H20

34 TFLOPS 1 TFLOPS

67 TFLOPS 44 TFLOPS

494 TFLOPS

989 TFLOPS sparse

74 TFLOPS

sparse not published

990 TFLOPS

1,979 TFLOPS sparse

148 TFLOPS

sparse not published

990 TFLOPS

1,979 TFLOPS sparse

148 TFLOPS

sparse not published

1,979 TFLOPS

3,958 TFLOPS sparse

296 TFLOPS

592 TFLOPS sparse

FP6

1,979 TOPS

3,958 TOPS sparse

296 TOPS

sparse not published

Tensor Core

67 TFLOPS

Precision

H100

H20

34 TFLOPS 1 TFLOPS

67 TFLOPS 44 TFLOPS

494 TFLOPS

989 TFLOPS sparse

74 TFLOPS

sparse not published

990 TFLOPS

1,979 TFLOPS sparse

148 TFLOPS

sparse not published

990 TFLOPS

1,979 TFLOPS sparse

148 TFLOPS

sparse not published

1,979 TFLOPS

3,958 TFLOPS sparse

296 TFLOPS

592 TFLOPS sparse

FP6

1,979 TOPS

3,958 TOPS sparse

296 TOPS

sparse not published

Tensor Core

67 TFLOPS

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 H20 is the newer part: Hopper (2025) against the H100's Hopper (2022).

The H20 carries 61 GB more memory (141 GB against 80 GB), so larger models fit on one GPU before you shard. Bandwidth is 3.4 TB/s against 4.0 TB/s, which sets the ceiling on decode speed.

Power is 700 W against 400 W, and at FP32 the H20 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, INT8, Sparsity and TFLOPS. For how the generations relate, see NVIDIA architectures explained.

Frequently asked questions

Is the H100 faster than the H20?

At FP8 precision the H100 reaches 1,979 TFLOPS dense against 296 TFLOPS for the H20. The performance table on this page lists every published precision for both GPUs.

Which should you choose, the H100 or the H20?

Choose the H100 for training and high-throughput inference: it has 6.7x the FP8 throughput of the H20. Choose the H20 when the model has to fit on one GPU: it carries 61 GB more memory. The H100 draws 300 W more power, so budget for cooling and power delivery before you commit.

Which has more memory, the H100 or the H20?

The H20 carries 141 GB of memory versus 80 GB for the H100. Memory bandwidth is 3.4 TB/s for the H100 and 4.0 TB/s for the H20.

How much power do the H100 and the H20 draw?

The H100 is rated at 700 W TDP and the H20 at 400 W. On FP32 throughput per watt, the H20 is the more efficient part.

How much do the H100 and the H20 cost to rent?

Live cloud listings tracked by Flopper price the H100 from $0.79 per GPU-hour across 32 providers, and no live listings yet for the H20. The rental section on this page links to every provider, rate and the price history for each GPU.

Where to Rent

NVIDIA H100 SXM5 80GB

Rent from

$0.79 / GPU-hr

Lowest of 68 live listings across 32 providers · median $3.64

See all H100 rental prices →

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

NVIDIA H20 141GB HBM3e

No live rental listings tracked for the H20 yet.

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Open in Full Compare Tool → H100 full specs H20 full specs Estimate cluster cost in the calculator →

NVIDIA H100 SXM5 80GB vs NVIDIA H20 141GB HBM3e

NVIDIA H100 SXM5 80GB

What is the NVIDIA H100?

Can I rent the H100 in the cloud?

How does the H100 compare with other accelerators?

Where do the H100 figures come from?

NVIDIA H20 141GB HBM3e

What is the NVIDIA H20?

Can I rent the H20 in the cloud?

How does the H20 compare with other accelerators?

Where do the H20 figures come from?

Specifications

Performance (TFLOPS)

FLOPS by Precision

What actually differs

Frequently asked questions

Is the H100 faster than the H20?

Which should you choose, the H100 or the H20?

Which has more memory, the H100 or the H20?

How much power do the H100 and the H20 draw?

How much do the H100 and the H20 cost to rent?

Where to Rent

NVIDIA H100 SXM5 80GB

NVIDIA H20 141GB HBM3e

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