Two Nvidia workstation GPUs, one Ampere and one Ada Lovelace: 16 GB GDDR6 against 20 GB GDDR6 and 60% more memory bandwidth on the A4000.
At a glance
Memory
- A4000
- 16 GB
- RTX 4000 SFF Ada
- 20 GB
1.2x more on RTX 4000 SFF Ada
Memory bandwidth
- A4000
- 448 GB/s
- RTX 4000 SFF Ada
- 280 GB/s
1.6x higher on A4000
Cheapest on-demand
- A4000
- $0.07 /GPU/hr
- RTX 4000 SFF Ada
- $0.18 /GPU/hr
2.5x more expensive on RTX 4000 SFF Ada
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | A4000 | RTX 4000 SFF Ada | Difference |
|---|---|---|---|
| On-demand | $0.19 /GPU/hr from $0.07 | $0.43 /GPU/hr from $0.18 | 2.3x more expensive on RTX 4000 SFF Ada |
| Reserved | $0.18 /GPU/hr from $0.07 (24 mo) | No reserved listings | |
| Spot | -- /GPU/hr from $0.06 | No spot 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 spot on the A4000: 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
A4000 vs RTX 4000 SFF Ada price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | A4000 | RTX 4000 SFF Ada | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 16 GB GDDR6 | 20 GB GDDR6 | 1.2x more on RTX 4000 SFF Ada |
| Bandwidth | 448 GB/s | 280 GB/s | 1.6x higher on A4000 |
| Bus width | 256-bit | 160-bit | 1.6x wider on A4000 |
| Compute · dense | |||
| FP8 | Not supported | 153.4 TFLOPS | RTX 4000 SFF Ada only |
| FP16 / BF16 | 76.7 TFLOPS | 76.7 TFLOPS | Identical |
| FP32 | 19.2 TFLOPS | 19.2 TFLOPS | Identical |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 140 W | 70 W | 2x higher on A4000 |
| Released | Q2 2021 | 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: A4000 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 | A4000 /GPU/hr | RTX 4000 SFF Ada /GPU/hr |
|---|---|---|
Runpod
|
On-Demand $0.25 | On-Demand $0.18 |
Vast.ai
|
On-Demand $0.07 | -- |
GPU.ai
|
On-Demand $0.07 | -- |
Spheron
|
On-Demand $0.16 | -- |
Sesterce
|
On-Demand $0.17 | -- |
Runcrate
|
On-Demand $0.17 | -- |
EmpirioLabs AI
|
On-Demand $0.25 | -- |
Hyperstack
|
On-Demand $0.15 | -- |
Koyeb
|
-- | On-Demand $0.50 |
Hetzner
|
-- | On-Demand $0.43 |
13 providers list the A4000 and 3 the RTX 4000 SFF Ada. Every listing is on the A4000 page and the RTX 4000 SFF Ada page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia RTX 4000 Ada
From $0.17 /GPU/hr Compare -
Nvidia A5000
From $0.23 /GPU/hr Compare
Our data for Nvidia A4000 was last updated on Sept. 14, 2026, and for Nvidia RTX 4000 SFF Ada on Sept. 14, 2026.