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NVIDIA A100 SXM4 80GB vs NVIDIA RTX A6000 48GB

The A100 delivers 2.0x the FP16 throughput of the RTX A6000 (312 vs 155 TFLOPS dense). The A100 also carries 32 GB more memory (80 GB vs 48 GB).

A100: Ampere, 2020 RTX A6000: Ampere, 2020
FP16 dense lead
2.0x
A100: 312 vs 155 TFLOPS
Memory
80 vs 48 GB
32 GB more for the A100
Bandwidth
2.0 TB/s vs 768 GB/s
A100 moves data faster
TDP
400 W vs 300 W
RTX A6000 draws 100 W less
See rental pricing from $0.33/hr Download comparison sheet

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NVIDIA A100 SXM4 80GB vs NVIDIA RTX A6000 48GB

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NVIDIA A100 SXM4 80GB

Leads on FP16 Full specs →

What is the NVIDIA A100?

The A100 is a GPU from NVIDIA on the Ampere 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. A100 full specifications →

Can I rent the A100 in the cloud?

Yes. Cloud providers tracked by Flopper rent the A100 by the hour, and the pricing page compares their current rates and the price history side by side. A100 rental prices →

How does the A100 compare with other accelerators?

This page sets the A100 against the RTX A6000. Both parts launched in the same year. Both are NVIDIA parts; the A100 is an SXM module while the RTX A6000 is a PCIe card. Flopper also compares it head to head with the H100 SXM5 80GB, B200 SXM 180GB and A100 PCIe 40GB, across every published precision, memory and power. A100 vs H100 SXM5 80GB →

Where do the A100 figures come from?

Every A100 figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

NVIDIA RTX A6000 48GB

Full specs →

What is the NVIDIA RTX A6000?

The RTX A6000 is a GPU from NVIDIA on the Ampere 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 A6000 full specifications →

Can I rent the RTX A6000 in the cloud?

Yes. Cloud providers tracked by Flopper rent the RTX A6000 by the hour, and the pricing page compares their current rates and the price history side by side. RTX A6000 rental prices →

How does the RTX A6000 compare with other accelerators?

This page sets the RTX A6000 against the A100. Both parts launched in the same year. Both are NVIDIA parts; the RTX A6000 is a PCIe card while the A100 is an SXM module. Flopper also compares it head to head with the SC11 FP300, across every published precision, memory and power. RTX A6000 vs SC11 FP300 →

Where do the RTX A6000 figures come from?

Every RTX A6000 figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

Specifications

A100
RTX A6000
Architecture
AmpereAmpere
Launch Year
20202020
Form Factor
SXMPCIe
Memory
80 GB48 GB
Memory Bandwidth
2.0 TB/s768 GB/s
TDP
400 W300 W
Process Node
7nm8nm

Performance (TFLOPS)

A100
RTX A6000
9.7 TFLOPS 0.6 TFLOPS
20 TFLOPS 39 TFLOPS
156 TFLOPS
312 TFLOPS sparse
77 TFLOPS
155 TFLOPS sparse
312 TFLOPS
624 TFLOPS sparse
155 TFLOPS
310 TFLOPS sparse
312 TFLOPS
624 TFLOPS sparse
155 TFLOPS
310 TFLOPS sparse
No verified data available No verified data available
FP6
No verified data available No verified data available
No verified data available No verified data available
624 TOPS
1,248 TOPS sparse
310 TOPS
619 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 2020, the A100 on Ampere and the RTX A6000 on Ampere.

The A100 carries 32 GB more memory (80 GB against 48 GB), so larger models fit on one GPU before you shard. Bandwidth is 2.0 TB/s against 768 GB/s, which sets the ceiling on decode speed.

Power is 400 W against 300 W, and at FP32 the RTX A6000 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, INT8, Sparsity and TFLOPS. For how the generations relate, see NVIDIA architectures explained.

Frequently asked questions

Is the A100 faster than the RTX A6000?

At FP16 precision the A100 reaches 312 TFLOPS dense against 155 TFLOPS for the RTX A6000. The performance table on this page lists every published precision for both GPUs.

Which should you choose, the A100 or the RTX A6000?

Choose the A100 for training and high-throughput inference: it has 2.0x the FP16 throughput of the RTX A6000. It also carries 32 GB more memory, so larger models fit on one GPU before you shard. The A100 draws 100 W more power, so budget for cooling and power delivery before you commit. Packaging differs too: the A100 is an SXM module while the RTX A6000 is a PCIe card, so check what your servers accept.

Which has more memory, the A100 or the RTX A6000?

The A100 carries 80 GB of memory versus 48 GB for the RTX A6000. Memory bandwidth is 2.0 TB/s for the A100 and 768 GB/s for the RTX A6000.

How much power do the A100 and the RTX A6000 draw?

The A100 is rated at 400 W TDP and the RTX A6000 at 300 W. On FP32 throughput per watt, the RTX A6000 is the more efficient part.

How much do the A100 and the RTX A6000 cost to rent?

Live cloud listings tracked by Flopper price the A100 from $0.54 per GPU-hour across 27 providers, and the RTX A6000 from $0.33 per GPU-hour across 14 providers. The rental section on this page links to every provider, rate and the price history for each GPU.

Where to Rent

NVIDIA A100 SXM4 80GB

Rent from

$0.54 / GPU-hr

Lowest of 58 live listings across 27 providers · median $1.79

See all A100 rental prices →

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

NVIDIA RTX A6000 48GB

Rent from

$0.33 / GPU-hr

Lowest of 23 live listings across 14 providers · median $0.55

See all RTX A6000 rental prices →

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

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