Qwen 2.5-VL 72B (VLM) at FP8 (E4M3) needs 72.0 GB for its weights and 93.5 GB in total at 8K context with 8 concurrent users. That means it fits on a single H200 SXM5 141GB. Every figure is computed by tokcalc's open-source capacity model.
| GPUs | Total VRAM | VRAM needed | Decode tok/s | Aggregate tok/s | TTFT | Cost / 1M tok | Fits? |
|---|---|---|---|---|---|---|---|
| 1× H200 | 141 GB | 93.5 GB | 65.00 | 780.0 | 2.43 s | $1.42 | ✓ |
| 2× H200 | 282 GB | 93.5 GB | 110.5 | 2652 | 1.23 s | $0.8379 | ✓ |
| 4× H200 | 564 GB | 93.5 GB | 221.0 | 10608 | 630.3 ms | $0.4190 | ✓ |
| 8× H200 | 1128 GB | 93.5 GB | 442.0 | 42432 | 330.2 ms | $0.2095 | ✓ |
| Context | Concurrent users | KV per request | Fits? |
|---|---|---|---|
| 4K | 51 | 1.34 GB | ✓ fits |
| 8K | 25 | 2.68 GB | ✓ fits |
| 33K | 6 | 10.74 GB | ✓ fits |
| 66K | 3 | 21.47 GB | ✓ fits |
| 131K | 1 | 42.95 GB | ✓ fits |
| GPU | GPUs | Aggregate tok/s | Cost / 1M tok |
|---|---|---|---|
| RTX 5090 32GB | 4× | 3960 | $0.1403 |
| A100 80GB SXM4 | 2× | 1105 | $0.6033 |
| H100 SXM5 80GB | 2× | 1851 | $0.7504 |
| AMD MI300X 192GB | 1× | 861.3 | $0.8063 |
| L40S 48GB | 2× | 477.4 | $0.8147 |
| AMD MI325X 288GB | 1× | 975.0 | $0.9972 |
Yes. Qwen 2.5-VL 72B (VLM) at FP8 (E4M3) needs 93.5 GB including the KV cache, and H200 SXM5 141GB has 141 GB — so it fits on a single GPU.
65.00 tokens/sec per stream and 780.0 tok/s aggregate with continuous batching at 8 concurrent users. Time to first token is 2.43 s, and inter-token latency is 15.4 ms.
$1.42 per 1M output tokens at 1× H200 SXM5 141GB ($4.00/hr). That is the marginal hardware cost — add idle capacity, ops, and egress for the real figure.
72.0 GB for the weights at FP8 (E4M3), plus 21.5 GB of KV cache for 8 concurrent requests at 8K context — 93.5 GB total. Every extra concurrent user at long context costs more, so leave headroom.
It works. Compare $1.42 per 1M tokens against the alternatives below — the cheapest option that fits the same workload is 8× RTX 4080 16GB at $0.1052, and the fastest is 4× Cerebras CS-3 (WSE-3) at 44200 tok/s.
Same formulas, your context length, concurrency, and quantisation.