Two Nvidia workstation GPUs, one Ampere and one Maxwell: 16 GB GDDR6 against 2 GB DDR3 and 15x the memory bandwidth on the A4000.
At a glance
Memory
- A4000
- 16 GB
- K620
- 2 GB
8x more on A4000
Memory bandwidth
- A4000
- 448 GB/s
- K620
- 29 GB/s
15x higher on A4000
Cheapest on-demand
- A4000
- $0.15 /GPU/hr
- K620
- --
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | A4000 | K620 | Difference |
|---|---|---|---|
| On-demand | $0.21 /GPU/hr from $0.15 | No on-demand listings | |
| Reserved | $0.25 /GPU/hr from $0.11 | No reserved listings | |
| Spot | -- /GPU/hr from $0.10 | 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 K620 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | A4000 | K620 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 16 GB GDDR6 | 2 GB DDR3 | 8x more on A4000 |
| Bandwidth | 448 GB/s | 29 GB/s | 15x higher on A4000 |
| Bus width | 256-bit | 128-bit | 2x wider on A4000 |
| Compute · dense | |||
| FP16 / BF16 | 76.7 TFLOPS | Not supported | A4000 only |
| FP32 | 19.2 TFLOPS | 0.9 TFLOPS | 22x higher on A4000 |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 140 W | 45 W | 3.1x higher on A4000 |
| Released | Q2 2021 | Q3 2014 | 7 years newer on A4000 |
| Precision | |||
| Supported formats | FP16BF16TF32FP32INT4INT8 | FP32 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: A4000 datasheet and K620 datasheet.
Where to rent them
Providers listing these GPUs, those with both first, so you can switch without moving clouds.
| Provider | A4000 /GPU/hr | K620 /GPU/hr |
|---|---|---|
Runcrate
|
On-Demand $0.17 | -- |
Sesterce
|
On-Demand $0.88 | -- |
Vast.ai
|
Spot $0.10 | -- |
Hyperstack
|
On-Demand $0.15 | -- |
TensorDock
|
On-Demand $0.21 | -- |
Paperspace
|
On-Demand $0.76 | -- |
Database Mart
|
Reserved (24mo) $0.17 | -- |
Cirrascale
|
Reserved (12mo) $0.28 | -- |
12 providers list the A4000 and 0 the K620. Every listing is on the A4000 page and the K620 page.
Similar GPUs
Other comparisons in the same class.
Our data for Nvidia A4000 was last updated on Sept. 7, 2026, and for Nvidia K620 on Sept. 7, 2026.