The P40 is newer, with 12x the memory and 12x the bandwidth.
At a glance
Memory
12x more on P40
- K620
- 2 GB
- P40
- 24 GB
Memory bandwidth
12x higher on P40
- K620
- 29 GB/s
- P40
- 346 GB/s
Cheapest on-demand
- K620
- --
- P40
- --
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
Price history
K620 vs P40 price history
Weekly median on-demand price per GPU per hour
Aggregating historical prices...
Specs comparison
| Spec | K620 | P40 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 2 GB DDR3 | 24 GB GDDR5 | 12x more on P40 |
| Bandwidth | 29 GB/s | 346 GB/s | 12x higher on P40 |
| Bus width | 128-bit | 384-bit | 3x wider on P40 |
| Compute · dense | |||
| INT8 | Not supported | 47 TOPS | P40 only |
| FP32 | 0.9 TFLOPS | 12 TFLOPS | 14x higher on P40 |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 45 W | 250 W | 5.6x higher on P40 |
| Released | Q3 2014 | Q3 2016 | 2 years newer on P40 |
| Precision | |||
| Supported formats | FP32 | FP16FP32INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: K620 datasheet and P40 datasheet.
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Our data for Nvidia K620 was last updated on Sept. 14, 2026, and for Nvidia P40 on Sept. 14, 2026.