✅Runs easilyfp16 · 4K ctx · batch 1
Run Qwen2.5-7B on A100 40GB
At fp16 precision, Qwen2.5-7B (7.0 B parameters) needs roughly 17.5 GB of VRAM. A100 40GB has 40 GB, leaving 22.5 GB of headroom — plenty of room for longer contexts and larger batch sizes. Expected throughput ≈ 87 tokens/sec on a single card.
44%
VRAM
Runs easily
Estimated VRAM (fp16)
17.5 GB
of 40 GB on A100 40GB· 22.5 GB free
Tok/sec
87
TFTT
766ms
Power
151W
Rent on GPUniq marketplace
A100 40GB
Live prices from verified providers · billed hourly, no commitment.
Memory breakdown (fp16)
Model Weights
14.00 GBKV Cache
0.50 GBActivations
2.00 GBFramework Overhead
1.03 GBQuantization comparison
Lower precision = less VRAM with a small quality trade-off. Quality order: FP16 > INT8 > INT4.
| Precision | VRAM | Utilisation | Fits on A100 40GB? |
|---|---|---|---|
| FP16 (full precision) | 17.5 GB | 44% | ✅Runs easily |
| INT8 (8-bit) | 9.5 GB | 24% | ✅Runs easily |
| INT4 / Q4 (4-bit) | 5.5 GB | 14% | ✅Runs easily |
Frequently asked
- Can A100 40GB run Qwen2.5-7B?
- Yes. Qwen2.5-7B needs ≈ 17.5 GB VRAM at fp16 and A100 40GB provides 40 GB. Expected throughput is 87 tokens/sec per GPU.
- How much VRAM does Qwen2.5-7B use?
- About 17.5 GB at fp16, 5.5 GB at INT4 (for a 4K context, batch size 1). Longer contexts add to KV cache size; larger batches increase activations.
- What's the fastest way to run Qwen2.5-7B on A100 40GB?
- Use a production inference engine like vLLM, SGLang, or TensorRT-LLM with paged attention — they cut KV cache 2–3× vs the naive estimate and batch multiple requests efficiently. For A100 40GB, enable Flash Attention 2.
- Where can I rent a A100 40GB?
- GPUniq aggregates live A100 40GB offers from verified providers. You can deploy an instance in about a minute and pay hourly with no commitment.
Other GPUs for Qwen2.5-7B
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Send a prompt and see how Qwen2.5-7B responds directly in our chat. No installation, no GPU required to test.
Want to tweak sequence length, batch size, or fine-tuning? Open the full calculator →