NVIDIA40 GB VRAM1,550 GB/s$0.9/hr

Qwen 2.5-VL 7B (VLM) on A100 40GB SXM4: Does It Fit, How Fast, What It Costs

Qwen 2.5-VL 7B (VLM) at FP16 needs 14.0 GB for its weights and 17.8 GB in total at 8K context with 8 concurrent users. That means it fits on a single A100 40GB SXM4. Every figure is computed by tokcalc's open-source capacity model.

Fits?
Yes, 1 GPU
17.8 GB needed / 40 GB available
Decode speed
71.96
tok/s per stream
Aggregate
863.6
tok/s @ 8 concurrent
Cost / 1M tokens
$0.2895
1× A100 40GB SXM4
What changes as you add A100 40GB SXM4s
Tensor-parallel degree vs VRAM, throughput, and cost. Cost scales linearly with GPU count; decode throughput scales near-linearly too, so cost per token stays roughly flat.
GPUsTotal VRAMVRAM neededDecode tok/sAggregate tok/sTTFTCost / 1M tokFits?
1× A10040 GB17.8 GB71.96863.6779.1 ms$0.2895✓
2× A10080 GB17.8 GB122.32936405.8 ms$0.1703✓
4× A100160 GB17.8 GB244.711745217.9 ms$0.0851✓
8× A100320 GB17.8 GB489.446978123.9 ms$0.0426✓
Concurrency vs context length
On 1× A100 40GB SXM4 at FP16. KV cache scales linearly with context, so this is the number of users your GPUs can actually serve.
ContextConcurrent usersKV per requestFits?
4K110240.5 MB✓ fits
8K55481.0 MB✓ fits
33K131.88 GB✓ fits
66K63.76 GB✓ fits
131K37.52 GB✓ fits
Other GPUs that run Qwen 2.5-VL 7B (VLM)
Same workload, same quantization — ranked by value (tokens per dollar-hour).
GPUGPUsAggregate tok/sCost / 1M tok
RTX 3090 24GB1×521.5$0.1332
RTX 5090 32GB1×998.4$0.1391
RTX 4090 24GB1×561.6$0.1978
AMD MI300X 192GB1×2953$0.2352
V100 SXM2 32GB1×501.4$0.2770
AMD MI325X 288GB1×3343$0.2908
Frequently asked questions

Can Qwen 2.5-VL 7B (VLM) run on A100 40GB SXM4?

Yes. Qwen 2.5-VL 7B (VLM) at FP16 needs 17.8 GB including the KV cache, and A100 40GB SXM4 has 40 GB — so it fits on a single GPU.

How fast is Qwen 2.5-VL 7B (VLM) on A100 40GB SXM4?

71.96 tokens/sec per stream and 863.6 tok/s aggregate with continuous batching at 8 concurrent users. Time to first token is 779.1 ms, and inter-token latency is 13.9 ms.

What does Qwen 2.5-VL 7B (VLM) on A100 40GB SXM4 cost per million tokens?

$0.2895 per 1M output tokens at 1× A100 40GB SXM4 ($0.9000/hr). That is the marginal hardware cost — add idle capacity, ops, and egress for the real figure.

How much VRAM does Qwen 2.5-VL 7B (VLM) need on A100 40GB SXM4?

14.0 GB for the weights at FP16, plus 3.8 GB of KV cache for 8 concurrent requests at 8K context — 17.8 GB total. Every extra concurrent user at long context costs more, so leave headroom.

Is A100 40GB SXM4 the right choice for Qwen 2.5-VL 7B (VLM)?

It works. Compare $0.2895 per 1M tokens against the alternatives below — the cheapest option that fits the same workload is 2× RTX 3080 10GB at $0.0772, and the fastest is 1× Cerebras CS-3 (WSE-3) at 11143 tok/s.

Adjust the workload yourself

Same formulas, your context length, concurrency, and quantisation.

Open in calculator