The GB300 is newer, with 12x the memory and 23x the bandwidth. The P40 is cheaper right now.
At a glance
Memory
12x more on GB300
- GB300
- 288 GB
- P40
- 24 GB
Memory bandwidth
23x higher on GB300
- GB300
- 8,000 GB/s
- P40
- 346 GB/s
Cheapest on-demand
99% cheaper on P40
- GB300
- $18.00 /GPU/hr
- P40
- $0.08 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | GB300 | P40 | Difference |
|---|---|---|---|
| On-demand | -- /GPU/hr from $18.00 | -- /GPU/hr from $0.08 | |
| Reserved | On request | No reserved listings | |
| Spot | Sold out | -- /GPU/hr from $0.07 |
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 and on-demand and spot on the P40: 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 P40 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | GB300 | P40 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 288 GB HBM3e | 24 GB GDDR5 | 12x more on GB300 |
| Bandwidth | 8,000 GB/s | 346 GB/s | 23x higher on GB300 |
| Bus width | 8,192-bit | 384-bit | 21x 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 | 47 TOPS | 3.5x higher on GB300 |
| FP32 | 80 TFLOPS | 12 TFLOPS | 6.7x 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 | 250 W | 5.6x higher on GB300 |
| Released | Q1 2025 | Q3 2016 | 8 years newer on GB300 |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16TF32FP32FP64INT8 | FP16FP32INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: GB300 datasheet and P40 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 | P40 |
|---|---|---|
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 | -- |
Together AI
USA
|
On request Custom NVL | -- |
Verda
Finland
|
$10.95 /GPU/hr On-demand SXM | -- |
Vast.ai
USA
|
-- | $0.08 /GPU/hr On-demand |
Similar GPUs
Other comparisons in the same class.
Our data for Nvidia GB300 was last updated on Sept. 14, 2026, and for Nvidia P40 on Sept. 14, 2026.