The B300 is newer, with 36x the memory and 42x the bandwidth. The P4 is cheaper right now.
At a glance
Memory
36x more on B300
- B300
- 288 GB
- P4
- 8 GB
Memory bandwidth
42x higher on B300
- B300
- 8,000 GB/s
- P4
- 192 GB/s
Cheapest on-demand
87% cheaper on P4
- B300
- $4.99 /GPU/hr
- P4
- $0.65 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | B300 | P4 | Difference |
|---|---|---|---|
| On-demand | $9.15 /GPU/hr from $4.99 | -- /GPU/hr from $0.65 | |
| Reserved | $5.46 /GPU/hr from $4.25 | -- /GPU/hr from $0.34 (36 mo) | |
| Spot | $6.17 /GPU/hr from $4.08 | -- /GPU/hr from $0.10 |
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, reserved and spot on the P4: 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
B300 vs P4 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | B300 | P4 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 288 GB HBM3e | 8 GB GDDR5 | 36x more on B300 |
| Bandwidth | 8,000 GB/s | 192 GB/s | 42x higher on B300 |
| Bus width | 8,192-bit | 256-bit | 32x 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 | 22 TOPS | 7x higher on B300 |
| FP32 | 75 TFLOPS | 5.5 TFLOPS | 14x 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 | 75 W | 15x higher on B300 |
| Released | Q1 2025 | Q3 2016 | 8 years newer on B300 |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16TF32FP32FP64INT8 | FP16FP32INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: B300 datasheet and P4 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 | B300 | P4 |
|---|---|---|
Daytona
USA
|
$7.10 /GPU/hr On-demand | -- |
Lium
Distributed
|
$9.25 /GPU/hr On-demand SXM | -- |
Runcrate
USA
|
$14.30 /GPU/hr On-demand NVL | -- |
EmpirioLabs AI
USA
|
$18.50 /GPU/hr On-demand | -- |
Spheron
Singapore
|
$5.84 /GPU/hr Spot SXM | -- |
GPUaaS
USA
|
$5.00 /GPU/hr Custom SXM | -- |
Packet·ai
USA
|
On request Custom SXM | -- |
Impossible Cloud
Germany
|
$4.53 /GPU/hr Reserved SXM | -- |
Google Cloud
USA
|
-- | $0.65 /GPU/hr On-demand |
36 providers list the B300 and 1 the P4. Every listing is on the B300 page and the P4 page.
Similar GPUs
Other comparisons in the same class.
Our data for Nvidia B300 was last updated on Sept. 14, 2026, and for Nvidia P4 on Sept. 14, 2026.