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B200 SXM vs B300 SXM
Cloud rental price, compute per dollar and specs, side by side.
Open in the interactive comparer →
B200 SXM$3.74lowest on-demand per GPU·h
$1.66 per PFLOP·h · 15 providersB300 SXM$4.50lowest on-demand per GPU·h
$2.00 per PFLOP·h · 11 providersWhat actually differs
- The B200 SXM and B300 SXM have the same dense FP16/BF16 throughput (2.25 PF vs 2.25 PF).
- The B300 SXM has 1.0× more memory bandwidth than the B200 SXM (7,700 vs 8,000 GB/s), which usually limits LLM token generation. Memory: 180 GB vs 288 GB.
- The B200 SXM is 17% cheaper per hour than the B300 SXM at the lowest on-demand prices ($3.74 vs $4.50).
- Per unit of compute, the B200 SXM is the better deal: $1.66 vs $2.00 per PFLOP-hour of dense FP16/BF16.
| Spec / price | B200 SXM | B300 SXM |
|---|---|---|
| Memory | 180 GB HBM3e | 288 GB HBM3ebetter |
| Memory bandwidth | 7,700 GB/s | 8,000 GB/sbetter |
| FP16 / BF16 (dense) | 2.25 PF | 2.25 PF |
| FP8 (dense) | 4.5 PF | 4.5 PF |
| FP4 (dense) | 9 PF | 13.5 PFbetter |
| INT8 (dense) | 4.5 PFbetter | 0.33 PF |
| TF32 (dense) | 1.1 PF | 1.1 PF |
| FP32 (dense) | 0.075 PF | 0.075 PF |
| FP64 (dense) | 0.037 PFbetter | 0.0013 PF |
| Power | 1000 W | 1100 W |
| Architecture | Blackwell (2024) | Blackwell Ultra (2025) |
| Lowest on-demand | $3.74better | $4.50 |
| Median on-demand | $6.80better | $8.37 |
| Lowest spot | $0.99 | $0.99 |
| FP16/BF16 $ per PFLOP·h | $1.66better | $2.00 |
| Providers | 15 | 11 |
B200 SXM vs B300 SXM: questions
Is the B200 SXM faster than the B300 SXM?
The B200 SXM and B300 SXM have the same dense FP16/BF16 compute. The B300 SXM has 1.0× more memory bandwidth than the B200 SXM. Real-world speedups depend on the workload: training and prefill scale with compute, while LLM decoding scales mostly with memory bandwidth.
Which is cheaper per FLOP, the B200 SXM or the B300 SXM?
Right now the B200 SXM is cheaper per unit of compute: $1.66 vs $2.00 per PFLOP-hour at the lowest on-demand prices.
How much does it cost to rent an B200 SXM vs an B300 SXM for a month?
Running one GPU around the clock at the lowest on-demand price costs about $2,730 per month for the B200 SXM and $3,285 for the B300 SXM.
Which has more memory, the B200 SXM or the B300 SXM?
The B300 SXM has more memory: 288 GB vs 180 GB.