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Run LLM Locally

Qwen2.5 7B Instruct on the A100 80GB

With 80 GB of VRAM, the A100 80GB runs Qwen2.5 7B Instruct at Q4_K_M entirely on the GPU with an 8K context (about 5.9 GB needed). At Q8_0 it fits entirely.

Qwen2.5 7B Instruct

Q4_K_M · 8K context

Excellent

The model needs about 5.9 GB and fits in the 77.6 GB available, with 71.7 GB to spare.

Your hardware
A100 80GB · 64 GB RAM
Estimated memory
~5.9 GB estimate
VRAM (usable memory)
77.6 GB
GPU only
Yes
CPU/GPU offload
Not required
Generation speed
201–319 tok/s estimate
Largest context in fast memory
128K tokens
Confidence: low

Based on: memory bandwidth (1,935 GB/s) and model size

Memory breakdown

~5.9 GB (5.5 GB–6.3 GB) needed · estimate

Fits entirely in VRAM · 71.7 GB left

  • Model weights4.4 GB
  • KV cache0.4 GB
  • Runtime overhead0.8 GB
  • Safety margin0.3 GB
Assumptions: context 8K tokens · KV cache f16 · llama.cpp (CUDA) · flash attention on · weights = real file size

EstimateData updated 24 days agoSource: Run LLM Locally engine, Hugging Face config.json + model card

What makes this estimate less reliable

  • no benchmark for this hardware and model yet

Other quantizations on the A100 80GB

Qwen2.5 7B Instruct on A100 80GB + 64 GB RAM · 8K context
Qwen2.5 7B Instruct Q8_08K~9.2 GB · 138–203 tok/s estimateExcellent
Qwen2.5 7B Instruct Q6_K8K~7.4 GB · 166–253 tok/s estimateExcellent
Qwen2.5 7B Instruct Q5_K_M8K~6.6 GB · 183–283 tok/s estimateExcellent
Qwen2.5 7B Instruct Q4_K_M8K~5.9 GB · 201–319 tok/s estimateExcellent
Qwen2.5 7B Instruct IQ4_XS8K~5.5 GB · 215–346 tok/s estimateExcellent
Qwen2.5 7B Instruct Q3_K_M8K~5.1 GB · 228–374 tok/s estimateExcellent

Alternatives

Hardware that runs Qwen2.5 7B Instruct Q4_K_M entirely in memory

Prices and links follow the market you choose.

GeForce RTX 4060

NVIDIA

ExcellentRuns Qwen2.5 7B Instruct Q4_K_M entirely in memory

Price not available

Availability unknown

View on amazon.com

Affiliate link

Radeon RX 7600 XT

AMD

ExcellentRuns Qwen2.5 7B Instruct Q4_K_M entirely in memory

Price not available

Availability unknown

View on amazon.com

Affiliate link

AMD Ryzen AI Max+ 395

Unified memory PC

ExcellentRuns Qwen2.5 7B Instruct Q4_K_M entirely in memory

Price not available

Availability unknown

View on amazon.com

Affiliate link

No current offer imported for this market: the link opens a marketplace search.

Frequently asked questions

Can the A100 80GB run Qwen2.5 7B Instruct?
The model needs about 5.9 GB and fits in the 77.6 GB available, with 71.7 GB to spare.
Which quantization should I use on the A100 80GB?
Q8_0 is the highest-precision quantization that fits entirely in VRAM at 8K context. ~9.2 GB / 77.6 GB.
What is the largest context on the A100 80GB?
At Q4_K_M, about 128K tokens fit entirely in VRAM with an f16 KV cache. A q8_0 KV cache roughly doubles that.
How fast is Qwen2.5 7B Instruct (A100 80GB)?
We estimate 201–319 tok/s (estimate, confidence low). Based on: memory bandwidth (1,935 GB/s) and model size.