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NVIDIA A800 PCIe 80GB vs NVIDIA GeForce RTX 3090 24GB

The A800 delivers 4.4x the FP16 throughput of the GeForce RTX 3090 (312 vs 71 TFLOPS dense). The A800 also carries 56 GB more memory (80 GB vs 24 GB).

A800: Ampere, 2022 GeForce RTX 3090: Ampere, 2020
FP16 dense lead
4.4x
A800: 312 vs 71 TFLOPS
Memory
80 vs 24 GB
56 GB more for the A800
Bandwidth
1.9 TB/s vs 936 GB/s
A800 moves data faster
TDP
300 W vs 350 W
A800 draws 50 W less
See rental pricing from $0.16/hr Download comparison sheet

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NVIDIA A800 PCIe 80GB vs NVIDIA GeForce RTX 3090 24GB

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NVIDIA A800 PCIe 80GB

Leads on FP16 Full specs →

What is the NVIDIA A800?

The A800 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. A800 full specifications →

Can I rent the A800 in the cloud?

Yes. Cloud providers tracked by Flopper rent the A800 by the hour, and the pricing page compares their current rates and the price history side by side. A800 rental prices →

How does the A800 compare with other accelerators?

This page sets the A800 against the GeForce RTX 3090. The A800 is the newer generation of the two. Both are NVIDIA parts, and both ship as a PCIe card, so they fit the same class of system. Flopper also compares it head to head with the A800 SXM4, across every published precision, memory and power. A800 vs A800 SXM4 →

Where do the A800 figures come from?

Every A800 figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

NVIDIA GeForce RTX 3090 24GB

Full specs →

What is the NVIDIA GeForce RTX 3090?

The GeForce RTX 3090 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. GeForce RTX 3090 full specifications →

Can I rent the GeForce RTX 3090 in the cloud?

Yes. Cloud providers tracked by Flopper rent the GeForce RTX 3090 by the hour, and the pricing page compares their current rates and the price history side by side. GeForce RTX 3090 rental prices →

How does the GeForce RTX 3090 compare with other accelerators?

This page sets the GeForce RTX 3090 against the A800. The GeForce RTX 3090 is the older generation of the two. Both are NVIDIA parts, and both ship as a PCIe card, 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 GeForce RTX 3090 figures come from?

Every GeForce RTX 3090 figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

Specifications

A800
GeForce RTX 3090
Architecture
AmpereAmpere
Launch Year
20222020
Form Factor
PCIePCIe
Memory
80 GB24 GB
Memory Bandwidth
1.9 TB/s936 GB/s
TDP
300 W350 W
Process Node
7nm8nm

Performance (TFLOPS)

A800
GeForce RTX 3090
9.7 TFLOPS 0.6 TFLOPS
20 TFLOPS 36 TFLOPS
156 TFLOPS
sparse not published
36 TFLOPS
71 TFLOPS sparse
312 TFLOPS
sparse not published
71 TFLOPS
142 TFLOPS sparse
312 TFLOPS
sparse not published
71 TFLOPS
142 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
sparse not published
284 TOPS
568 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

The A800 is the newer part: Ampere (2022) against the GeForce RTX 3090's Ampere (2020).

The A800 carries 56 GB more memory (80 GB against 24 GB), so larger models fit on one GPU before you shard. Bandwidth is 1.9 TB/s against 936 GB/s, which sets the ceiling on decode speed.

Power is 300 W against 350 W, and at FP32 the GeForce RTX 3090 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 A800 faster than the GeForce RTX 3090?

At FP16 precision the A800 reaches 312 TFLOPS dense against 71 TFLOPS for the GeForce RTX 3090. The performance table on this page lists every published precision for both GPUs.

Which should you choose, the A800 or the GeForce RTX 3090?

Choose the A800 for training and high-throughput inference: it has 4.4x the FP16 throughput of the GeForce RTX 3090. It also carries 56 GB more memory, so larger models fit on one GPU before you shard. The A800 draws 50 W less power, which matters in an air-cooled or power-capped rack.

Which has more memory, the A800 or the GeForce RTX 3090?

The A800 carries 80 GB of memory versus 24 GB for the GeForce RTX 3090. Memory bandwidth is 1.9 TB/s for the A800 and 936 GB/s for the GeForce RTX 3090.

How much power do the A800 and the GeForce RTX 3090 draw?

The A800 is rated at 300 W TDP and the GeForce RTX 3090 at 350 W. On FP32 throughput per watt, the GeForce RTX 3090 is the more efficient part.

How much do the A800 and the GeForce RTX 3090 cost to rent?

Live cloud listings tracked by Flopper price the A800 from $0.47 per GPU-hour across 1 provider, and the GeForce RTX 3090 from $0.16 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 A800 PCIe 80GB

Rent from

$0.47 / GPU-hr

Lowest of 1 live listing across 1 provider

See all A800 rental prices →

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

NVIDIA GeForce RTX 3090 24GB

Rent from

$0.16 / GPU-hr

Lowest of 4 live listings across 3 providers

See all GeForce RTX 3090 rental prices →

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

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