The A40 has 2x the memory, with about the same bandwidth. The RTX PRO 4000 is newer and cheaper right now.
At a glance
Memory
2x more on A40
- A40
- 48 GB
- RTX PRO 4000
- 24 GB
Memory bandwidth
Within 5%
- A40
- 696 GB/s
- RTX PRO 4000
- 672 GB/s
Cheapest on-demand
28% cheaper on RTX PRO 4000
- A40
- $0.28 /GPU/hr
- RTX PRO 4000
- $0.20 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | A40 | RTX PRO 4000 | Difference |
|---|---|---|---|
| On-demand | $0.65 /GPU/hr from $0.28 | -- /GPU/hr from $0.20 | |
| Reserved | -- /GPU/hr from $0.61 (24 mo) | -- /GPU/hr from $0.26 (1 mo) | |
| Spot | -- /GPU/hr from $0.27 | -- /GPU/hr from $0.11 |
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. No median for reserved and spot on the A40 and on-demand, reserved and spot on the RTX PRO 4000: we only show one when at least 3 providers list the GPU on that billing type. Verify before provisioning. More on how we price.
Price history
A40 vs RTX PRO 4000 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | A40 | RTX PRO 4000 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 48 GB GDDR6 | 24 GB GDDR7 | 2x more on A40 |
| Bandwidth | 696 GB/s | 672 GB/s | Within 5% |
| Bus width | 384-bit | 192-bit | 2x wider on A40 |
| Compute · dense | |||
| FP4 | Not supported | 589 TFLOPS | RTX PRO 4000 only |
| FP8 | Not supported | 294.5 TFLOPS | RTX PRO 4000 only |
| FP16 / BF16 | 149.7 TFLOPS | 147.3 TFLOPS | Within 5% |
| INT8 | 299.3 TOPS | 294.5 TOPS | Within 5% |
| FP32 | 37.4 TFLOPS | 37 TFLOPS | Within 5% |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 300 W | 145 W | 2.1x higher on A40 |
| Released | Q4 2020 | Q1 2025 | 4 years newer on RTX PRO 4000 |
| Precision | |||
| Supported formats | FP16BF16TF32FP32INT4INT8 | FP4FP8FP16BF16TF32FP32INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: A40 datasheet and RTX PRO 4000 datasheet.
Where to rent them
Providers that rent these GPUs, with each one's cheapest rate. Providers that rent both are listed first.
| Provider | A40 | RTX PRO 4000 |
|---|---|---|
Vast.ai
USA
|
$0.28 /GPU/hr On-demand | $0.20 /GPU/hr On-demand |
Database Mart
USA
|
$0.61 /GPU/hr Reserved | $0.26 /GPU/hr Reserved |
Runpod
USA
|
$0.49 /GPU/hr On-demand | On request Reserved |
GPU.ai
UAE
|
$0.49 /GPU/hr On-demand | -- |
Sesterce
France
|
$2.05 /GPU/hr On-demand | -- |
Runcrate
USA
|
$2.42 /GPU/hr On-demand PCIe | -- |
Denvr
Canada
|
$0.65 /GPU/hr On-demand | -- |
Exoscale
Switzerland
|
$1.05 /GPU/hr On-demand | -- |
9 providers list the A40 and 3 the RTX PRO 4000. Every listing is on the A40 page and the RTX PRO 4000 page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia RTX 6000 Ada
48 GB GDDR6 · 38% more bandwidth than the A40
From $0.54 /GPU/hr Compare -
Nvidia L40
48 GB GDDR6 · 24% more bandwidth than the A40
From $0.46 /GPU/hr Compare
-
Nvidia A5000
24 GB GDDR6 · NVLink 112 GB/s
From $0.23 /GPU/hr Compare
-
Nvidia A4000
16 GB GDDR6 · 33% less bandwidth than the RTX PRO 4000
From $0.07 /GPU/hr Compare
Our data for Nvidia A40 was last updated on Sept. 14, 2026, and for Nvidia RTX PRO 4000 on Sept. 14, 2026.