NVIDIA RTX A5000 24GB vs NVIDIA A40 48GB
The A40 delivers 5.4x the FP16 throughput of the RTX A5000 (150 vs 28 TFLOPS dense). The A40 also carries 24 GB more memory (48 GB vs 24 GB).
NVIDIA RTX A5000 24GB
Full specs →NVIDIA A40 48GB
Full specs →Specifications
Performance (TFLOPS)
FLOPS by Precision
What actually differs
Both GPUs launched in 2021: the RTX A5000 on Ampere and the A40 on Ampere.
Dense throughput for the RTX A5000 against the A40: FP32 28 vs 37 TFLOPS, FP16 28 vs 150 TFLOPS. Sparse figures, where the vendor publishes them, appear under each dense number in the performance table.
Memory is 24 GB against 48 GB, fed at 768 GB/s versus 696 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 230 W for the RTX A5000 and 300 W for the A40. At FP32 that works out to 0.12 against 0.12 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 RTX A5000 faster than the A40?
At FP16 precision the A40 reaches 150 TFLOPS dense against 28 TFLOPS for the RTX A5000. The performance table on this page lists every published precision for both GPUs.
Which has more memory, the RTX A5000 or the A40?
The A40 carries 48 GB of VRAM versus 24 GB for the RTX A5000. Memory bandwidth is 768 GB/s for the RTX A5000 and 696 GB/s for the A40.
How much power do the RTX A5000 and the A40 draw?
The RTX A5000 is rated at 230 W TDP and the A40 at 300 W. On FP32 throughput per watt, the A40 is the more efficient part.
Can I rent the RTX A5000 or the A40 in the cloud?
Yes. Live cloud listings tracked by Flopper start at $0.16 per GPU hour. The rental pricing section on this page lists current providers and rates for both GPUs.
Where to Rent
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