B200 vs RTX 4000 SFF Ada: Specs, VRAM & Price
Short answer: choose the B200 when 180 GB of VRAM is the gating requirement. Choose the RTX 4000 SFF Ada when 20 GB is enough for the workload and the lower hourly rate points that way.
The B200 has 180 GB of VRAM; the RTX 4000 SFF Ada has 20 GB.
You can rent both by the hour, no purchase required. B200 from $8.79/GPU/hr; RTX 4000 SFF Ada from $0.198/GPU/hr. The RTX 4000 SFF Ada is 98% cheaper at the entry rate.
B200
Good for training and serving frontier-scale LLMs
RTX 4000 SFF Ada
Good for inference and light fine-tuning workloads
Last updated: 2026-10-10 18:34:38 UTCRefreshes hourly
Specs side by side
| Spec | B200 | RTX 4000 SFF Ada |
|---|---|---|
| VRAM | 180 GB | 20 GB |
| Memory bandwidth | 8 TB/s | – |
| Architecture | Blackwell | Ada Lovelace |
| Compute capability | 10.0 | 8.9 |
| Precisions in hardware | FP32, FP16, BF16, FP8, INT4 | FP32, FP16, BF16, FP8, INT4 |
| Peak FP16/BF16 tensor TFLOPS | 2,250 TFLOPS | – |
| Peak FP8 tensor TFLOPS | 4,500 TFLOPS | – |
| NVLink / multi-GPU interconnect | NVLink 5, 1.8 TB/s per GPU | – |
| Max board power (TDP) | Up to 1,000W | – |
| Form factor | SXM | – |
| Regions | 3 | 1 |
On-demand price
| Rate | B200 | RTX 4000 SFF Ada |
|---|---|---|
| Lowest per GPU/hr | $8.79/GPU/hr | $0.198/GPU/hr (cheapest overall) |
Which is better for AI: B200 or RTX 4000 SFF Ada?
Choose the B200 when 180 GB of VRAM is the gating requirement. Choose the RTX 4000 SFF Ada when 20 GB is enough for the workload and the lower hourly rate points that way.
B200 vs RTX 4000 SFF Ada: common questions
Is the B200 or the RTX 4000 SFF Ada better for AI?
Short answer: choose the B200 when 180 GB of VRAM is the gating requirement. Choose the RTX 4000 SFF Ada when 20 GB is enough for the workload and the lower hourly rate points that way.
Is the B200 or the RTX 4000 SFF Ada cheaper to rent?
On Aquanode's live marketplace the B200 starts at $8.79/GPU/hr (median $8.79/GPU/hr) and the RTX 4000 SFF Ada starts at $0.198/GPU/hr (median $0.198/GPU/hr). The RTX 4000 SFF Ada is the cheaper of the two at the entry rate, by 98%.
What is the difference between the B200 and the RTX 4000 SFF Ada?
The B200 has 180 GB of VRAM against the RTX 4000 SFF Ada's 20 GB; the B200 is a Blackwell part and the RTX 4000 SFF Ada is Ada Lovelace (compute capability 10.0 vs 8.9); both run BF16, FP8, INT4 workloads in hardware. On price, the B200 lists from $8.79/GPU/hr and the RTX 4000 SFF Ada from $0.198/GPU/hr.
How widely available are the B200 and the RTX 4000 SFF Ada?
The B200 is listed in 3 regions and the RTX 4000 SFF Ada in 1 region right now.
How much does 1,000 GPU-hours cost on the B200 vs the RTX 4000 SFF Ada?
At the lowest rates listed today, 1,000 GPU-hours costs $8,789 on the B200 and $198 on the RTX 4000 SFF Ada, a difference of $8,591 for the same runtime. Rates are per GPU per hour and update hourly.
How much VRAM does the B200 have compared to the RTX 4000 SFF Ada?
The B200 has 180 GB of VRAM; the RTX 4000 SFF Ada has 20 GB.
How this comparison is calculated
Every price is normalized to a per-GPU hourly rate using the same pipeline as every other pricing surface on Aquanode, and only the cheapest qualifying offer per provider is shown. A dash means that provider does not currently list that GPU.
Architecture, compute capability and supported precisions come from each vendor's published datasheet for that generation, not from the marketplace feed. This page regenerates at most once per hour.
Memory bandwidth, tensor TFLOPS, NVLink/interconnect and max board power are the same verified-from-datasheet figures shown on each model's own B200 page and RTX 4000 SFF Ada page, which link the primary vendor source for that model. A dash here means Aquanode hasn't verified that figure from a primary source yet, never a guess.
Go further
Check what fits in each card's memory with the B200 VRAM calculator and the RTX 4000 SFF Ada VRAM calculator, see vendor-published throughput in the GPU benchmarks and specs table, or browse every model by generation in the GPU index.
More B200 comparisons
More RTX 4000 SFF Ada comparisons
Related reading: B200 pricing and specs, NVIDIA B200 guide, B300 vs B200, H200 vs B200 vs GB200, and The best GPUs for AI, ranked.
