The GB300 is newer, with 3.6x the memory and 4x the bandwidth.
At a glance
Memory
3.6x more on GB300
- GB300
- 288 GB
- H800
- 80 GB
Memory bandwidth
4x higher on GB300
- GB300
- 8.00 TB/s
- H800
- 2.00 TB/s
Cheapest on-demand
- GB300
- $18.00 /GPU/hr
- H800
- --
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | GB300 | H800 | 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 H800 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | GB300 | H800 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 288 GB HBM3e | 80 GB HBM2e | 3.6x more on GB300 |
| Bandwidth | 8,000 GB/s | 2,000 GB/s | 4x higher on GB300 |
| Bus width | 8,192-bit | 5,120-bit | 60% wider on GB300 |
| Compute · dense | |||
| FP4 | 15,000 TFLOPS | Not supported | GB300 only |
| FP8 | 5,000 TFLOPS | 1,513 TFLOPS | 3.3x higher on GB300 |
| FP16 / BF16 | 2,500 TFLOPS | 756.5 TFLOPS | 3.3x higher on GB300 |
| INT8 | 165 TOPS | 1,513 TOPS | 9.2x higher on H800 |
| FP32 | 80 TFLOPS | 51 TFLOPS | 57% higher on GB300 |
| FP64 | 1.3 TFLOPS | ||
| Platform | |||
| Interconnect | NVLink 1,800 GB/s | NVLink 400 GB/s | 4.5x higher on GB300 |
| Board power | 1,400 W | 350 W | 4x higher on GB300 |
| Released | Q1 2025 | Q1 2023 | 2 years newer on GB300 |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16TF32FP32FP64INT8 | FP8FP16BF16TF32FP32FP64INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: GB300 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 | H800 |
|---|---|---|
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 H800. Every listing is on the GB300 page and the H800 page.
Similar GPUs
Other comparisons in the same class.
Our data for Nvidia GB300 was last updated on Sept. 14, 2026, and for Nvidia H800 on Sept. 14, 2026.