Two Nvidia workstation GPUs, one Maxwell and one Ada Lovelace: 2 GB DDR3 against 20 GB GDDR6 and 9.7x the memory bandwidth on the RTX 4000 SFF Ada.
At a glance
Memory
- K620
- 2 GB
- RTX 4000 SFF Ada
- 20 GB
10x more on RTX 4000 SFF Ada
Memory bandwidth
- K620
- 29 GB/s
- RTX 4000 SFF Ada
- 280 GB/s
9.7x higher on RTX 4000 SFF Ada
Cheapest on-demand
- K620
- --
- RTX 4000 SFF Ada
- $0.43 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | K620 | RTX 4000 SFF Ada | Difference |
|---|---|---|---|
| On-demand | No on-demand listings | -- /GPU/hr from $0.43 |
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
K620 vs RTX 4000 SFF Ada price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | K620 | RTX 4000 SFF Ada | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 2 GB DDR3 | 20 GB GDDR6 | 10x more on RTX 4000 SFF Ada |
| Bandwidth | 29 GB/s | 280 GB/s | 9.7x higher on RTX 4000 SFF Ada |
| Bus width | 128-bit | 160-bit | 1.2x wider on RTX 4000 SFF Ada |
| Compute · dense | |||
| FP8 | Not supported | 153.4 TFLOPS | RTX 4000 SFF Ada only |
| FP16 / BF16 | Not supported | 76.7 TFLOPS | RTX 4000 SFF Ada only |
| FP32 | 0.9 TFLOPS | 19.2 TFLOPS | 22x higher on RTX 4000 SFF Ada |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 45 W | 70 W | 1.6x higher on RTX 4000 SFF Ada |
| Released | Q3 2014 | Q2 2023 | 9 years newer on RTX 4000 SFF Ada |
| Precision | |||
| Supported formats | FP32 | FP8FP16BF16TF32FP32INT4INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: K620 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.
Similar GPUs
Other comparisons in the same class.
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Nvidia RTX 4000 Ada
From $0.17 /GPU/hr Compare
Our data for Nvidia K620 was last updated on Sept. 14, 2026, and for Nvidia RTX 4000 SFF Ada on Sept. 14, 2026.