A data center GPU against a workstation card, one Ampere and one Ada Lovelace: 48 GB GDDR6 against 20 GB GDDR6 and 2.5x the memory bandwidth on the A40.
At a glance
Memory
- A40
- 48 GB
- RTX 4000 SFF Ada
- 20 GB
2.4x more on A40
Memory bandwidth
- A40
- 696 GB/s
- RTX 4000 SFF Ada
- 280 GB/s
2.5x higher on A40
Cheapest on-demand
- A40
- $0.28 /GPU/hr
- RTX 4000 SFF Ada
- $0.43 /GPU/hr
35% cheaper on A40
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | A40 | RTX 4000 SFF Ada | Difference |
|---|---|---|---|
| On-demand | $0.77 /GPU/hr from $0.28 | -- /GPU/hr from $0.43 | |
| Reserved | $0.65 /GPU/hr from $0.25 (1 mo) | 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. No median for on-demand on the RTX 4000 SFF Ada: 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 4000 SFF Ada price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | A40 | RTX 4000 SFF Ada | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 48 GB GDDR6 | 20 GB GDDR6 | 2.4x more on A40 |
| Bandwidth | 696 GB/s | 280 GB/s | 2.5x higher on A40 |
| Bus width | 384-bit | 160-bit | 2.4x wider on A40 |
| Compute · dense | |||
| FP8 | Not supported | 153.4 TFLOPS | RTX 4000 SFF Ada only |
| FP16 / BF16 | 149.7 TFLOPS | 76.7 TFLOPS | 2x higher on A40 |
| INT8 | 299.3 TOPS | ||
| FP32 | 37.4 TFLOPS | 19.2 TFLOPS | 1.9x higher on A40 |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 300 W | 70 W | 4.3x higher on A40 |
| Released | Q4 2020 | Q2 2023 | 2 years newer on RTX 4000 SFF Ada |
| Precision | |||
| Supported formats | FP16BF16TF32FP32INT4INT8 | FP8FP16BF16TF32FP32INT4INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: A40 datasheet and RTX 4000 SFF Ada datasheet.
Where to rent them
Providers listing these GPUs, those with both first, so you can switch without moving clouds.
| Provider | A40 /GPU/hr | RTX 4000 SFF Ada /GPU/hr |
|---|---|---|
Runpod
|
On-Demand $0.49 | On-Demand $0.18 |
Vast.ai
|
On-Demand $0.28 | -- |
GPU.ai
|
On-Demand $0.49 | -- |
Sesterce
|
On-Demand $2.05 | -- |
Runcrate
|
On-Demand $2.05 | -- |
Exoscale
|
On-Demand $1.05 | -- |
Database Mart
|
Reserved (24mo) $0.61 | -- |
Utho
|
Reserved (36mo) $0.65 | -- |
Koyeb
|
-- | On-Demand $0.50 |
Hetzner
|
-- | On-Demand $0.43 |
9 providers list the A40 and 3 the RTX 4000 SFF Ada. Every listing is on the A40 page and the RTX 4000 SFF Ada page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia RTX 6000 Ada
From $0.55 /GPU/hr Compare -
Nvidia A5000
From $0.18 /GPU/hr Compare -
Nvidia L40
From $0.58 /GPU/hr Compare -
Nvidia RTX 4000 Ada
From $0.17 /GPU/hr Compare
Our data for Nvidia A40 was last updated on Sept. 14, 2026, and for Nvidia RTX 4000 SFF Ada on Sept. 14, 2026.