A data center GPU against a consumer card, one Blackwell Ultra and one Ampere: up to 288 GB HBM3e against 8 GB GDDR6, 18x the memory bandwidth on the B300, and NVLink 1,800 GB/s on the B300 where the RTX 3070 is PCIe only.
At a glance
Memory
- B300
- 288 GB
- RTX 3070
- 8 GB
36x more on B300
Memory bandwidth
- B300
- 8,000 GB/s
- RTX 3070
- 448 GB/s
18x higher on B300
Cheapest on-demand
- B300
- $6.50 /GPU/hr
- RTX 3070
- $0.10 /GPU/hr
65x more expensive on B300
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | B300 | RTX 3070 | Difference |
|---|---|---|---|
| On-demand | $7.89 /GPU/hr from $6.50 | $0.10 /GPU/hr from $0.10 | 76x more expensive on B300 |
| Reserved | $5.71 /GPU/hr from $4.25 | No reserved listings | |
| Spot | $5.85 /GPU/hr from $4.30 | -- /GPU/hr from $0.04 |
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 spot on the RTX 3070: 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 RTX 3070 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | B300 | RTX 3070 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 288 GB HBM3e | 8 GB GDDR6 | 36x more on B300 |
| Bandwidth | 8,000 GB/s | 448 GB/s | 18x 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 | 40.6 TFLOPS | 55x higher on B300 |
| INT8 | 153.5 TOPS | 162.6 TOPS | 1.1x higher on RTX 3070 |
| FP32 | 75 TFLOPS | 20.3 TFLOPS | 3.7x 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 | 220 W | 5x higher on B300 |
| Released | Q1 2025 | Q4 2020 | 4 years newer on B300 |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16TF32FP32FP64INT8 | FP16BF16TF32FP32INT4INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: B300 datasheet and RTX 3070 datasheet.
Where to rent them
Providers listing these GPUs, those with both first, so you can switch without moving clouds.
| Provider | B300 /GPU/hr | RTX 3070 /GPU/hr |
|---|---|---|
Runpod
|
On-Demand $7.89 | On-Demand $0.13 |
GPU.ai
|
On-Demand $7.89 | -- |
Lium
|
On-Demand $8.00 | -- |
Vast.ai
|
On-Demand $8.75 | -- |
EmpirioLabs AI
|
On-Demand $16.00 | -- |
Spheron
|
Spot $5.85 | -- |
GPUaaS
|
Custom on request | -- |
Packet·ai
|
Custom on request | -- |
Salad
|
-- | On-Demand $0.10 |
Theta EdgeCloud
|
-- | On-Demand $0.10 |
33 providers list the B300 and 3 the RTX 3070. Every listing is on the B300 page and the RTX 3070 page.
Similar GPUs
Other comparisons in the same class.
Our data for Nvidia B300 was last updated on Sept. 7, 2026, and for Nvidia RTX 3070 on Sept. 7, 2026.