The GB300 is newer, with 144x the memory and 100x the bandwidth.
At a glance
Memory
144x more on GB300
- GB300
- 288 GB
- P620
- 2 GB
Memory bandwidth
100x higher on GB300
- GB300
- 8,000 GB/s
- P620
- 80 GB/s
Cheapest on-demand
- GB300
- $18.00 /GPU/hr
- P620
- --
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | GB300 | P620 | Difference |
|---|---|---|---|
| On-demand | -- /GPU/hr from $18.00 | No on-demand listings | |
| Reserved | On request | No reserved listings | |
| Spot | Sold out | 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 on the GB300: 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
GB300 vs P620 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | GB300 | P620 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 288 GB HBM3e | 2 GB GDDR5 | 144x more on GB300 |
| Bandwidth | 8,000 GB/s | 80 GB/s | 100x higher on GB300 |
| Bus width | 8,192-bit | 128-bit | 64x wider on GB300 |
| Compute · dense | |||
| FP4 | 15,000 TFLOPS | Not supported | GB300 only |
| FP8 | 5,000 TFLOPS | Not supported | GB300 only |
| FP16 / BF16 | 2,500 TFLOPS | ||
| INT8 | 165 TOPS | Not supported | GB300 only |
| FP32 | 80 TFLOPS | 1.3 TFLOPS | 62x higher on GB300 |
| FP64 | 1.3 TFLOPS | Not supported | GB300 only |
| Platform | |||
| Interconnect | NVLink 1,800 GB/s | PCIe only | NVLink on GB300 only |
| Board power | 1,400 W | 40 W | 35x higher on GB300 |
| Released | Q1 2025 | Q1 2018 | 7 years newer on GB300 |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16TF32FP32FP64INT8 | FP16FP32 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: GB300 datasheet and P620 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 | GB300 | P620 |
|---|---|---|
GPUaaS
USA
|
$5.00 /GPU/hr Custom NVL | -- |
Orion AI Factory
Serbia
|
On request Reserved NVL | -- |
CambridgeNexus
USA
|
On request Custom NVL | -- |
Oracle Cloud
USA
|
$18.00 /GPU/hr On-demand NVL | -- |
AWS
USA
|
On request Reserved | -- |
CoreWeave
USA
|
On request Custom NVL | -- |
Gcore
Luxembourg
|
On request Custom NVL | -- |
Nebius
Netherlands
|
On request Custom NVL | -- |
10 providers list the GB300 and 0 the P620. Every listing is on the GB300 page and the P620 page.
Similar GPUs
Other comparisons in the same class.
Our data for Nvidia GB300 was last updated on Sept. 14, 2026, and for Nvidia P620 on Sept. 14, 2026.