NVIDIA24 GB VRAM1,008 GB/s$0.4/hr

Qwen 2.5-VL 7B (VLM) on RTX 4090 24GB: 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 RTX 4090 24GB. Every figure is computed by tokcalc's open-source capacity model.

Fits?
Yes, 1 GPU
17.8 GB needed / 24 GB available
Decode speed
46.80
tok/s per stream
Aggregate
561.6
tok/s @ 8 concurrent
Cost / 1M tokens
$0.1978
1× RTX 4090 24GB
What changes as you add RTX 4090 24GBs
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× RTX24 GB17.8 GB46.80561.62.83 s$0.1978✓
2× RTX48 GB17.8 GB79.5619091.43 s$0.1164✓
4× RTX96 GB17.8 GB159.17638730.5 ms$0.0582✓
8× RTX192 GB17.8 GB318.230551380.3 ms$0.0291✓
Concurrency vs context length
On 1× RTX 4090 24GB at FP16. KV cache scales linearly with context, so this is the number of users your GPUs can actually serve.
ContextConcurrent usersKV per requestFits?
4K42240.5 MB✓ fits
8K21481.0 MB✓ fits
33K51.88 GB✓ fits
66K23.76 GB✓ fits
131K17.52 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
AMD MI300X 192GB1×2953$0.2352
V100 SXM2 32GB1×501.4$0.2770
A100 40GB SXM41×863.6$0.2895
AMD MI325X 288GB1×3343$0.2908
Frequently asked questions

Can Qwen 2.5-VL 7B (VLM) run on RTX 4090 24GB?

Yes. Qwen 2.5-VL 7B (VLM) at FP16 needs 17.8 GB including the KV cache, and RTX 4090 24GB has 24 GB — so it fits on a single GPU.

How fast is Qwen 2.5-VL 7B (VLM) on RTX 4090 24GB?

46.80 tokens/sec per stream and 561.6 tok/s aggregate with continuous batching at 8 concurrent users. Time to first token is 2.83 s, and inter-token latency is 21.4 ms.

What does Qwen 2.5-VL 7B (VLM) on RTX 4090 24GB cost per million tokens?

$0.1978 per 1M output tokens at 1× RTX 4090 24GB ($0.4000/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 RTX 4090 24GB?

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 RTX 4090 24GB the right choice for Qwen 2.5-VL 7B (VLM)?

It works. Compare $0.1978 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