The A4000 is newer and has 29% more bandwidth, while the P40 has 50% more memory.
At a glance
Memory
50% more on P40
- A4000
- 16 GB
- P40
- 24 GB
Memory bandwidth
29% higher on A4000
- A4000
- 448 GB/s
- P40
- 346 GB/s
Cheapest on-demand
- A4000
- $0.12 /GPU/hr
- P40
- --
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | A4000 | P40 | Difference |
|---|---|---|---|
| On-demand | $0.21 /GPU/hr from $0.12 | No on-demand listings | |
| Reserved | $0.25 /GPU/hr from $0.11 | No reserved listings |
Heads up: A provider's own page may quote a different figure, for example on tax, region or a promotion. A monthly-only plan shows a derived hourly rate. Medians are across providers, one vote each, so a large catalog does not outweigh a small one. Verify before provisioning. More on how we price.
Price history
A4000 vs P40 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | A4000 | P40 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 16 GB GDDR6 | 24 GB GDDR5 | 50% more on P40 |
| Bandwidth | 448 GB/s | 346 GB/s | 29% higher on A4000 |
| Bus width | 256-bit | 384-bit | 50% wider on P40 |
| Compute · dense | |||
| FP16 / BF16 | 76.7 TFLOPS | ||
| INT8 | 47 TOPS | ||
| FP32 | 19.2 TFLOPS | 12 TFLOPS | 60% higher on A4000 |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 140 W | 250 W | 79% higher on P40 |
| Released | Q2 2021 | Q3 2016 | 5 years newer on A4000 |
| Precision | |||
| Supported formats | FP16BF16TF32FP32INT4INT8 | FP16FP32INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: A4000 datasheet and P40 datasheet.
Where to rent them
Providers that rent these GPUs, with each one's cheapest rate. No provider we track offers both right now.
| Provider | A4000 | P40 |
|---|---|---|
GPU.ai
UAE
|
$0.12 /GPU/hr On-demand | -- |
Sesterce
France
|
$0.17 /GPU/hr On-demand | -- |
Spheron
Singapore
|
$0.17 /GPU/hr On-demand PCIe | -- |
Runcrate
USA
|
$0.20 /GPU/hr On-demand PCIe | -- |
EmpirioLabs AI
USA
|
$0.25 /GPU/hr On-demand | -- |
TensorDock
Distributed
|
$0.21 /GPU/hr On-demand | -- |
Paperspace
USA
|
$0.76 /GPU/hr On-demand | -- |
Hyperstack
UK
|
$0.11 /GPU/hr Reserved | -- |
12 providers list the A4000 and 0 the P40. Every listing is on the A4000 page and the P40 page.
Similar GPUs
Other comparisons in the same class.
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Nvidia RTX 4000 Ada
20 GB GDDR6 · 20% less bandwidth than the A4000
On-demand from $0.52 /GPU/hr -
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Our data for Nvidia A4000 was last updated on Sept. 14, 2026, and for Nvidia P40 on Sept. 14, 2026.