NVIDIA A100 SXM4 80GB vs NVIDIA GeForce RTX 3090 24GB
The A100 delivers 4.4x the FP16 throughput of the GeForce RTX 3090 (312 vs 71 TFLOPS dense). The A100 also carries 56 GB more memory (80 GB vs 24 GB).
NVIDIA A100 SXM4 80GB
Full specs →NVIDIA GeForce RTX 3090 24GB
Full specs →Specifications
Performance (TFLOPS)
FLOPS by Precision
What actually differs
Both GPUs launched in 2020: the A100 on Ampere and the GeForce RTX 3090 on Ampere.
Dense throughput for the A100 against the GeForce RTX 3090: FP64 9.7 vs 0.6 TFLOPS, FP32 20 vs 36 TFLOPS, FP16 312 vs 71 TFLOPS. Sparse figures, where the vendor publishes them, appear under each dense number in the performance table.
Memory is 80 GB against 24 GB, fed at 2.0 TB/s versus 936 GB/s. More memory per GPU means larger models fit before you have to shard across cards, which often matters more than raw TFLOPS for inference.
Power budgets are 400 W for the A100 and 350 W for the GeForce RTX 3090. At FP32 that works out to 0.05 against 0.10 TFLOPS per watt.
For LLM training and inference, weight the FP8 and FP16 rows and memory capacity most heavily. For scientific and HPC workloads, the FP64 row is the one to read.
Frequently asked questions
Is the A100 faster than the GeForce RTX 3090?
At FP16 precision the A100 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 has more memory, the A100 or the GeForce RTX 3090?
The A100 carries 80 GB of VRAM versus 24 GB for the GeForce RTX 3090. Memory bandwidth is 2.0 TB/s for the A100 and 936 GB/s for the GeForce RTX 3090.
How much power do the A100 and the GeForce RTX 3090 draw?
The A100 is rated at 400 W TDP and the GeForce RTX 3090 at 350 W. On FP32 throughput per watt, the GeForce RTX 3090 is the more efficient part.
Can I rent the A100 or the GeForce RTX 3090 in the cloud?
Yes. Live cloud listings tracked by Flopper start at $0.22 per GPU hour. The rental pricing section on this page lists current providers and rates for both GPUs.
Where to Rent
NVIDIA A100 SXM4 80GB
| Provider | Instance | Price/GPU-hr | Checked | |
|---|---|---|---|---|
 | 1A100.22V (spot) | $0.90 | 3h ago | View → |
 | nvidia-a100 (spot) | $1.21 | 3h ago | View → |
 | gpu_1x_a100_SXM4 | $1.38 | 3h ago | View → |
 | A100 SXM (Community Cloud) | $1.39 | 3h ago | View → |
 | A100_40GB_SXM_8x | $1.40 | 3h ago | View → |
| | A100_80GB_SXM_1x | $1.40 | 3h ago | View → |
| | A100 SXM (Secure Cloud) | $1.59 | 3h ago | View → |
 | — | $1.60 | 3h ago | View → |
| | 1A100.22V (on-demand) | $1.79 | 3h ago | View → |
 | gpu_1x_a100_sxm4 | $1.99 | 3h ago | View → |
 | — | $2.30 | 3h ago | View → |
| | nvidia-a100 (on-demand) | $2.70 | 3h ago | View → |
| | gpu_8x_a100_80gb_sxm4 | $2.79 | 3h ago | View → |
Excess Supply | gpu_8x_a100_80gb_sxm4 | $3.00 | 3h ago | View → |
 | A100 | $3.19 | 3h ago | View → |
| | A100-80G | $3.28 | 3h ago | View → |
 | ND96ams A100 v4 | $4.10 | 3h ago | View → |
| | ND96amsr A100 v4 | $4.10 | 3h ago | View → |
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