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 TPU v5p (per-chip, 95GB). 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× TPU | 95 GB | 93.5 GB | 11.09 | 133.1 | 5.26 s | $8.77 | ✓ |
| 2× TPU | 190 GB | 93.5 GB | 18.85 | 452.5 | 2.65 s | $5.16 | ✓ |
| 4× TPU | 380 GB | 93.5 GB | 37.71 | 1810 | 1.34 s | $2.58 | ✓ |
| 8× TPU | 760 GB | 93.5 GB | 75.42 | 7240 | 685.8 ms | $1.29 | ✓ |
| Context | Concurrent users | KV per request | Fits? |
|---|---|---|---|
| 4K | 17 | 1.34 GB | ✓ fits |
| 8K | 8 | 2.68 GB | ✓ fits |
| 33K | 2 | 10.74 GB | ✓ fits |
| 66K | 1 | 21.47 GB | ✓ fits |
| 131K | 0 | 42.95 GB | ✗ does not fit |
| 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 TPU v5p (per-chip, 95GB) has 95 GB — so it fits on a single GPU.
11.09 tokens/sec per stream and 133.1 tok/s aggregate with continuous batching at 8 concurrent users. Time to first token is 5.26 s, and inter-token latency is 90.2 ms.
$8.77 per 1M output tokens at 1× TPU v5p (per-chip, 95GB) ($4.20/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 $8.77 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.