COMPARE / GB300 VS H100 SXM
GB300 vs H100 SXM
Specs from the chip makers' datasheets; prices from the live Compute Cafe panel, refreshed hourly. Every rate is an on-demand published price with a source receipt.
CHEAPEST GB300
$9.623/hr
Verda (formerly DataCrunch) · median $9.63 · 3 providers
CHEAPEST H100 SXM
$0.890/hr
SpotGPUs · median $5.49 · 77 providers
CHEAPER RIGHT NOW
H100 SXM
live panel, 2026-09-27
| GB300 | H100 SXM | |
|---|---|---|
| MAKER | NVIDIA | NVIDIA |
| ARCHITECTURE | Blackwell Ultra | Hopper |
| LAUNCHED | 2025 | 2022 |
| MEMORY | 288 GB HBM3e per GPU | 80 GB HBM3 |
| MEMORY BANDWIDTH | 8 TB/s | 3.35 TB/s |
| TENSOR COMPUTE | Blackwell Ultra tensor cores with FP4 (per-GPU figures mirror the B300) | 989 TFLOPS FP16/BF16 tensor dense (1,979 sparse); 1,979 TFLOPS FP8 dense |
| POWER DRAW | platform-dependent (NVL72 rack) | 700 W |
| INTERCONNECT | NVLink 5.0 | NVLink 4.0 900 GB/s |
HOW TO CHOOSE
GB300 vs H100 SXM
Two generations back: a fraction of the throughput and memory, at a fraction of the price. For work that fits in 80 GB, the H100 remains the value choice.
Workload fit
GB300: frontier training, reasoning-model serving, anything small. H100 SXM: llm pre-training, 70b+ fine-tuning, high-throughput inference.
GB300 VS H100 SXM - FAQ
Which is cheaper to rent, GB300 or H100 SXM?
By today's published on-demand rates: GB300 starts at $9.623/GPU/hr (median $9.63, 3 providers) and H100 SXM starts at $0.890/GPU/hr (median $5.49, 77 providers). The cheapest live listing is the H100 SXM at SpotGPUs. Figures recompute from the panel on every refresh.
GB300 or H100 SXM - which should I rent?
GB300: GB300 is the Grace-Blackwell Ultra superchip: B300-class GPUs paired with Grace CPUs, sold as NVL72 racks rather than cards. H100 SXM: The H100 SXM is the chip the current generation of frontier models was trained on, and the benchmark every other datacenter GPU is priced against. The side-by-side spec table and live price rows above give the full picture.
Where can I rent GB300 and H100 SXM?
3 providers publish GB300 rates and 77 publish H100 SXM rates on Compute Cafe. Every row links to the provider's own published price - committed-use and reserved rates are excluded.
Full pricing: GB300 · H100 SXM · all comparisons