Nvidia B300 vs Nvidia RTX 5090

Nvidia RTX 5090 wins twice: it rents for 20.8x less per hour and still buys 1.9x more FP16 compute per dollar.

Prices and stock checked 2 hours ago

Datasheet, side by side

Memory per GPU9.0x on the Nvidia B300
Memory bandwidth4.5x on the Nvidia B300
FP16 / BF16 dense10.7x on the Nvidia B300
FP8 dense10.7x on the Nvidia B300
Board power1.9x on the Nvidia RTX 5090

Figures are the vendors' own published numbers, dense rates without sparsity. A bar is drawn only where both cards publish the same figure.

Price, side by side

Metric Nvidia B300 Nvidia RTX 5090
Cheapest listed $5.88 $0.28
Median across providers $7.71 $0.65
Most expensive listed $9.69 $0.70
Providers 5 5
Reporting stock 3 4
One month, 730 hours $4,292 $206

Frequently asked questions

Is the Nvidia B300 or the Nvidia RTX 5090 cheaper to rent?

The Nvidia B300 starts at $5.88 per GPU hour and the Nvidia RTX 5090 at $0.28. Nvidia RTX 5090 wins twice: it rents for 20.8x less per hour and still buys 1.9x more FP16 compute per dollar.

Which one can I actually get right now?

Nvidia B300: 3 of 5 providers report stock, cheapest in stock $5.88 at Lium. Nvidia RTX 5090: 4 of 5 providers report stock, cheapest in stock $0.28 at Vast.ai.

What does a month on each card cost?

Nvidia B300: $4,292 for 730 hours at its cheapest listed rate. Nvidia RTX 5090: $206 for 730 hours at its cheapest listed rate.