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NVIDIA A800 PCIe 80GB vs NVIDIA RTX A4500 20GB

The A800 delivers 13.2x the FP16 throughput of the RTX A4500 (312 vs 24 TFLOPS dense). The A800 also carries 60 GB more memory (80 GB vs 20 GB).

A800: Ampere, 2022 RTX A4500: Ampere, 2021
FP16 dense lead
13.2x
A800: 312 vs 24 TFLOPS
Memory
80 vs 20 GB
60 GB more for the A800
Bandwidth
1.9 TB/s vs 640 GB/s
A800 moves data faster
TDP
300 W vs 200 W
RTX A4500 draws 100 W less
See rental pricing from $0.18/hr Download comparison sheet

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NVIDIA A800 PCIe 80GB vs NVIDIA RTX A4500 20GB

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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?

Flopper is not tracking any live rental listings for the A800 yet. The provider directory lists the clouds that rent comparable accelerators on demand. GPU cloud providers →

How does the A800 compare with other accelerators?

This page sets the A800 against the RTX A4500. 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 RTX A4500 20GB

Full specs →

What is the NVIDIA RTX A4500?

The RTX A4500 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 A4500 full specifications →

Can I rent the RTX A4500 in the cloud?

Yes. Cloud providers tracked by Flopper rent the RTX A4500 by the hour, and the pricing page compares their current rates and the price history side by side. RTX A4500 rental prices →

How does the RTX A4500 compare with other accelerators?

This page sets the RTX A4500 against the A800. The RTX A4500 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 RTX A4500 figures come from?

Every RTX A4500 figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

Specifications

A800
RTX A4500
Architecture
AmpereAmpere
Launch Year
20222021
Form Factor
PCIePCIe
Memory
80 GB20 GB
Memory Bandwidth
1.9 TB/s640 GB/s
TDP
300 W200 W
Process Node
7nm8nm

Performance (TFLOPS)

A800
RTX A4500
9.7 TFLOPS 0.4 TFLOPS
20 TFLOPS 24 TFLOPS
156 TFLOPS
sparse not published
24 TFLOPS
sparse not published
312 TFLOPS
sparse not published
24 TFLOPS
sparse not published
312 TFLOPS
sparse not published
24 TFLOPS
sparse not published
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
47 TOPS
sparse not published

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 RTX A4500's Ampere (2021).

The A800 carries 60 GB more memory (80 GB against 20 GB), so larger models fit on one GPU before you shard. Bandwidth is 1.9 TB/s against 640 GB/s, which sets the ceiling on decode speed.

Power is 300 W against 200 W, and at FP32 the RTX A4500 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 RTX A4500?

At FP16 precision the A800 reaches 312 TFLOPS dense against 24 TFLOPS for the RTX A4500. The performance table on this page lists every published precision for both GPUs.

Which should you choose, the A800 or the RTX A4500?

Choose the A800 for training and high-throughput inference: it has 13.2x the FP16 throughput of the RTX A4500. It also carries 60 GB more memory, so larger models fit on one GPU before you shard. The A800 draws 100 W more power, so budget for cooling and power delivery before you commit.

Which has more memory, the A800 or the RTX A4500?

The A800 carries 80 GB of memory versus 20 GB for the RTX A4500. Memory bandwidth is 1.9 TB/s for the A800 and 640 GB/s for the RTX A4500.

How much power do the A800 and the RTX A4500 draw?

The A800 is rated at 300 W TDP and the RTX A4500 at 200 W. On FP32 throughput per watt, the RTX A4500 is the more efficient part.

How much do the A800 and the RTX A4500 cost to rent?

Live cloud listings tracked by Flopper price no live listings yet for the A800, and the RTX A4500 from $0.18 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 A800 PCIe 80GB

No live rental listings tracked for the A800 yet.

Browse GPU cloud providers

NVIDIA RTX A4500 20GB

Rent from

$0.18 / GPU-hr

Lowest of 3 live listings across 2 providers

See all RTX A4500 rental prices →

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

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