B200 vs B300

B200 vs B300

Blackwell Ultra adds memory (288 GB) and roughly 50% more FP4 throughput, aimed at inference reasoning models. For training, the B200 is the mainstream part.

B300 vs B200

Same bandwidth, 50% more memory, more FP4. Serving fleets with huge models take the B300; everyone else compares live rates.

Workload fit

B200: frontier pre-training, fp4 inference, large moe training. B300: reasoning-model serving, largest-model inference.

Which is cheaper to rent, B200 or B300?

By today's published on-demand rates: B200 starts at $2.490/GPU/hr (median $6.25, 36 providers) and B300 starts at $4.480/GPU/hr (median $8.54, 22 providers). The cheapest live listing is the B200 at SpotGPUs. Figures recompute from the panel on every refresh.

B200 or B300 - which should I rent?

B200: The B200 is Blackwell's datacenter flagship: roughly 2.3x the H100's dense compute, a new FP4 precision that doubles effective inference throughput, 192 GB at 8 TB/s, and NVLink 5 at 1.8 TB/s. B300: The B300 (Blackwell Ultra) is NVIDIA's inference-first Blackwell refresh: 288 GB of HBM3e - half again the B200's memory - with FP4 throughput tuned for reasoning models that generate long chains of thought. The side-by-side spec table and live price rows above give the full picture.

Where can I rent B200 and B300?

36 providers publish B200 rates and 22 publish B300 rates on Compute Cafe. Every row links to the provider's own published price - committed-use and reserved rates are excluded.