GPU comparison
H100 SXM 80GB vs B300: specs and rental cost comparison
H100 SXM 80GB vs B300: H100 SXM 80GB is cheaper on the lowest tracked rental row at $1.99 per GPU-hour, versus $6.60 for B300. That makes B300 about 232% more expensive per GPU-hour on the cheapest rows in the ByteCosts GPU catalog. H100 SXM 80GB has 80 GB VRAM and B300 has 288 GB VRAM. The tables compare source-backed specs and value metrics only where both GPUs have a real spec field and a tracked rental rate. Rental prices are list rates per GPU-hour, before committed-use discounts, capacity limits, or region constraints.
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H100 SXM 80GB vs B300: rental value
Cheapest tracked on-demand rental rows and normalized value metrics.
| Metric | H100 SXM 80GB | B300 |
|---|---|---|
| Cheapest rental / GPU-hour | $1.99 | $6.60 |
| $ / GB VRAM | $0.025 | $0.023 |
H100 SXM 80GB vs B300: specs
Hardware specs from the committed GPU spec catalog. Rows with missing source fields on either GPU are omitted.
| Spec | H100 SXM 80GB | B300 |
|---|---|---|
| Architecture | hopper | blackwell |
| VRAM | 80 GB | 288 GB |
| Memory bandwidth | 3350 GB/s | 8000 GB/s |
| TDP | 700 W | 1400 W |
Cheapest tracked rental rows
| GPU | Provider | Instance | Region | GPUs | Instance/hr | Per-GPU/hr |
|---|---|---|---|---|---|---|
| H100 SXM 80GB | Voltage Park | h100-sxm5-ondemand | published | 1 | $1.99 | $1.99 |
| B300 | Massed Compute | b300-sxm6-x8 | published | 8 | $52.80 | $6.60 |
Frequently asked questions
Is H100 SXM 80GB or B300 cheaper to rent?
H100 SXM 80GB is cheaper on the lowest tracked row at $1.99 per GPU-hour, compared with $6.60 for B300. Region, capacity, spot interruption, and discounts can change a production bill.
Which is better value, H100 SXM 80GB or B300?
Use the value table above: $/GB-VRAM is always shown from real VRAM and rental rate, while $/TFLOP rows are shown only when both GPUs have the relevant sourced compute spec. Do not compare a missing field as zero.
Where do these GPU comparison numbers come from?
Rental rates come from the ByteCosts GPU rental catalog normalized from the SkyPilot catalog. Hardware specs come from the committed GPU spec catalog and its per-GPU source URLs.
H100 SXM 80GB vs B300 GPU comparison. ByteCosts. Updated September 4, 2026. https://bytecosts.com/gpu/compare/h100-sxm-80gb-vs-b300/