A data center GPU against a workstation card, one Blackwell Ultra and one Pascal: up to 288 GB HBM3e against 2 GB GDDR5, 100x the memory bandwidth on the B300, and NVLink 1,800 GB/s on the B300 where the P620 is PCIe only.
At a glance
Updated 5 minutes ago- Memory
- 288 GB
- HBM3e
- Memory bandwidth
- 8.00 TB/s
- From
- $6.50 /GPU/hr
- 30 providers
- Memory
- 2 GB
- GDDR5
- Memory bandwidth
- 80 GB/s
- From
- --
Price comparison
Cheapest listed price per GPU per hour by billing type, and the median across providers.
| Billing | B300 | P620 | Difference |
|---|---|---|---|
| On-demand | $6.50 | -- | |
| Spot | $2.99 | No spot listings | |
| Reserved | $4.25 | No reserved listings | |
| Median | $7.87 | -- |
Median: Median across providers, one vote each, so a large catalog does not outweigh a small one.
Price history
B300 vs P620 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | B300 | P620 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 288 GB HBM3e | 2 GB GDDR5 | 144x more on B300 |
| Bandwidth | 8,000 GB/s | 80 GB/s | 100x higher on B300 |
| Bus width | 8,192-bit | 128-bit | 64x wider on B300 |
| Compute · dense | |||
| FP4 | 14,000 TFLOPS | Not supported | B300 only |
| FP8 | 4,500 TFLOPS | Not supported | B300 only |
| FP16 / BF16 | 2,250 TFLOPS | ||
| INT8 | 153.5 TOPS | Not supported | B300 only |
| FP32 | 75 TFLOPS | 1.3 TFLOPS | 58x higher on B300 |
| FP64 | 1.2 TFLOPS | Not supported | B300 only |
| Platform | |||
| Interconnect | NVLink 1,800 GB/s | PCIe only | NVLink on B300 only |
| Board power | 1,100 W | 40 W | 28x higher on B300 |
| Released | Q1 2025 | Q1 2018 | 7 years newer on B300 |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16TF32FP32FP64INT8 | FP16FP32 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: B300 datasheet and P620 datasheet.
Where to rent them
Providers listing these GPUs, those with both first, so you can switch without moving clouds.
| Provider | B300 /GPU/hr | P620 /GPU/hr |
|---|---|---|
GPU.ai
|
On-Demand $7.89 | -- |
Runpod
|
On-Demand $7.89 | -- |
Lyceum
|
On-Demand $7.99 | -- |
GPUaaS
|
Custom on request | -- |
Packet·ai
|
Custom on request | -- |
Impossible Cloud
|
Reserved (60mo) $4.32 | -- |
Canopy Wave
|
Custom on request | -- |
Bentaus
|
On-Demand $6.50 | -- |
30 providers list the B300 and 0 the P620. Every listing is on the B300 page and the P620 page.
Similar GPUs
Other comparisons in the same class.
Our data for Nvidia B300 was last updated on Sept. 7, 2026, and for Nvidia P620 on Sept. 7, 2026.