Kovara
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B300 SXM has 800% more memory than RTX PRO 4500 Blackwell Server Edition 32GB (288 GB vs 32 GB). Its memory bandwidth is 900% more (8 vs 0.8 TB/s). In the cloud, the median on-demand B300 SXM price is $7.45 per GPU-hour against $0.92 for the RTX PRO 4500 Blackwell Server Edition 32GB. Per gigabyte of GPU memory, that is $0.026 vs $0.029 per hour.
Manufacturer figures as recorded by Kovara. Higher memory and bandwidth are highlighted; neither is a benchmark of your workload.
| B300 SXM | RTX PRO 4500 Blackwell Server Edition 32GB | |
|---|---|---|
| Manufacturer | NVIDIA | NVIDIA |
| Architecture | Blackwell Ultra | Blackwell |
| Memory | 288 GB HBM3E | 32 GB GDDR7 |
| Memory bandwidth | 8 TB/s | 0.8 TB/s |
| Power (TDP) | 1400 W | 165 W |
| Form factor | SXM | PCIe Gen5 single-slot FHFL |
Public offers Kovara tracks, normalised to US dollars per GPU-hour. Prices use on-demand terms where available; spot and reserved offers are on each GPU’s price pages. Lower is highlighted.
| B300 SXM | RTX PRO 4500 Blackwell Server Edition 32GB | |
|---|---|---|
| Lowest price | $6.60 | $0.92 |
| Median price | $7.45 | $0.92 |
| Highest price | $8.29 | $0.92 |
| Median per GB of memory | $0.026 | $0.029 |
| Public offers (all terms) | 28 | 5 |
| Providers | 11 | 2 |
Lowest tracked price per provider. Open a provider to see every offer, region and term.
Right now the cheapest on-demand B300 SXM Kovara tracks is $6.60 per GPU-hour and the cheapest RTX PRO 4500 Blackwell Server Edition 32GB is $0.92. Medians are $7.45 and $0.92. The cheaper GPU per hour is not always cheaper per job: a faster or larger GPU can finish sooner or need fewer units.
The B300 SXM has more memory: 288 GB against 32 GB. Memory decides which models and batch sizes fit on one GPU.
No. This page compares manufacturer specifications and public prices. Real performance depends on the model, precision, software and interconnect. Kova can help you estimate cost for a specific workload.