A data center GPU against a workstation card, one Blackwell Ultra and one Ada Lovelace: 288 GB HBM3e against 20 GB GDDR6, 29x the memory bandwidth on the B300, and NVLink 1,800 GB/s on the B300 where the RTX 4000 SFF Ada is PCIe only.
At a glance
Memory
- B300
- 288 GB
- RTX 4000 SFF Ada
- 20 GB
14x more on B300
Memory bandwidth
- B300
- 8,000 GB/s
- RTX 4000 SFF Ada
- 280 GB/s
29x higher on B300
Cheapest on-demand
- B300
- $6.50 /GPU/hr
- RTX 4000 SFF Ada
- $0.43 /GPU/hr
15x more expensive on B300
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | B300 | RTX 4000 SFF Ada | Difference |
|---|---|---|---|
| On-demand | $7.85 /GPU/hr from $6.50 | -- /GPU/hr from $0.43 | |
| Reserved | $5.72 /GPU/hr from $4.25 | No reserved listings | |
| Spot | $5.85 /GPU/hr from $4.30 | 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 RTX 4000 SFF Ada: 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 4000 SFF Ada price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | B300 | RTX 4000 SFF Ada | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 288 GB HBM3e | 20 GB GDDR6 | 14x more on B300 |
| Bandwidth | 8,000 GB/s | 280 GB/s | 29x higher on B300 |
| Bus width | 8,192-bit | 160-bit | 51x wider on B300 |
| Compute · dense | |||
| FP4 | 14,000 TFLOPS | Not supported | B300 only |
| FP8 | 4,500 TFLOPS | 153.4 TFLOPS | 29x higher on B300 |
| FP16 / BF16 | 2,250 TFLOPS | 76.7 TFLOPS | 29x higher on B300 |
| INT8 | 153.5 TOPS | ||
| FP32 | 75 TFLOPS | 19.2 TFLOPS | 3.9x 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 | 70 W | 16x higher on B300 |
| Released | Q1 2025 | Q2 2023 | 2 years newer on B300 |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16TF32FP32FP64INT8 | FP8FP16BF16TF32FP32INT4INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: B300 datasheet and RTX 4000 SFF Ada 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 4000 SFF Ada /GPU/hr |
|---|---|---|
Runpod
|
On-Demand $7.89 | On-Demand $0.18 |
Verda
|
On-Demand $7.58 | -- |
GPU.ai
|
On-Demand $7.89 | -- |
Vast.ai
|
On-Demand $9.38 | -- |
TheAI Cloud
|
Reserved (24mo) $4.90 | -- |
Spheron
|
Spot $5.85 | -- |
GPUaaS
|
Custom on request | -- |
Packet·ai
|
Custom on request | -- |
Koyeb
|
-- | On-Demand $0.50 |
Hetzner
|
-- | On-Demand $0.43 |
32 providers list the B300 and 3 the RTX 4000 SFF Ada. Every listing is on the B300 page and the RTX 4000 SFF Ada page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia H100
From $1.50 /GPU/hr Compare -
Nvidia B200
From $3.75 /GPU/hr Compare -
Nvidia H200
From $2.09 /GPU/hr Compare -
Nvidia RTX 4000 Ada
From $0.17 /GPU/hr Compare
Our data for Nvidia B300 was last updated on Sept. 14, 2026, and for Nvidia RTX 4000 SFF Ada on Sept. 14, 2026.