The GTX 1080 is newer, with 4x the memory and 11x the bandwidth.
At a glance
Memory
4x more on GTX 1080
- GTX 1080
- 8 GB
- K620
- 2 GB
Memory bandwidth
11x higher on GTX 1080
- GTX 1080
- 320 GB/s
- K620
- 29 GB/s
Cheapest on-demand
- GTX 1080
- $0.04 /GPU/hr
- K620
- --
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | GTX 1080 | K620 | Difference |
|---|---|---|---|
| On-demand | -- /GPU/hr from $0.04 | No on-demand listings | |
| Reserved | -- /GPU/hr from $0.06 (1 mo) | No reserved listings | |
| Spot | -- /GPU/hr from $0.02 | 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 on-demand, reserved and spot on the GTX 1080: 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
GTX 1080 vs K620 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | GTX 1080 | K620 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 8 GB GDDR5X | 2 GB DDR3 | 4x more on GTX 1080 |
| Bandwidth | 320 GB/s | 29 GB/s | 11x higher on GTX 1080 |
| Bus width | 256-bit | 128-bit | 2x wider on GTX 1080 |
| Compute · dense | |||
| FP32 | 8.9 TFLOPS | 0.9 TFLOPS | 10x higher on GTX 1080 |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 180 W | 45 W | 4x higher on GTX 1080 |
| Released | Q2 2016 | Q3 2014 | 2 years newer on GTX 1080 |
| Precision | |||
| Supported formats | FP16FP32 | FP32 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: GTX 1080 datasheet and K620 datasheet.
Where to rent them
Providers that rent these GPUs, with each one's cheapest rate. No provider we track offers both right now.
| Provider | GTX 1080 | K620 |
|---|---|---|
Vast.ai
USA
|
$0.05 /GPU/hr On-demand | -- |
Salad
Distributed
|
$0.0400 /GPU/hr On-demand | -- |
Similar GPUs
Other comparisons in the same class.
-
Nvidia RTX 3060
12 GB GDDR6 · released Q1 2021
From $0.06 /GPU/hr Compare -
Nvidia GTX 1080 Ti
11 GB GDDR5X · 51% more bandwidth than the GTX 1080
From $0.04 /GPU/hr Compare
-
Nvidia RTX 2070
8 GB GDDR6 · 40% more bandwidth than the GTX 1080
From $0.06 /GPU/hr Compare
Our data for Nvidia GTX 1080 was last updated on Sept. 14, 2026, and for Nvidia K620 on Sept. 14, 2026.