Qwen2.5-14B-Instruct on NVIDIA RTX A6000 (48GB VRAM)
In 4-bit Q4_K_M, Qwen2.5-14B-Instruct uses only 11.4 GB of your 48 GB VRAM (24% utilization) at ~53.1 tokens/sec. In full 16-bit precision, it requires 32.65 GB.
🎛️ Interactive VRAM & KV-Cache Tuner
📊 Real-Time Memory Footprint
11.4 GB / 48 GB🚀 Ready-to-Run Launch Command
ollama run qwen2.5:14b # Or with llama.cpp server (8K context, Flash Attention): llama-server -hf Qwen/Qwen2.5-14B-Instruct-GGUF -c 8192 -ngl 99 -fa
Need 11.4 GB+ VRAM to run Qwen2.5-14B-Instruct?
Recommended cloud setup for 4-bit: RTX 4090 (24GB) (or 32.65 GB for full FP16). Spin up a pre-configured vLLM / Ollama instance in 60 seconds:
| Provider | Best For | RTX 4090 (24GB) | A100 (80GB) | H100 (80GB) | Bonus / Trial | Action |
|---|---|---|---|---|---|---|
| RunPod | 1-Click vLLM / Ollama Pods | $0.44 / hr | $1.39 / hr | $2.39 / hr | Instant PyTorch / vLLM Pods + Serverless GPU | Deploy on RunPod → |
| Vast.ai | Cheapest Spot GPU Market | $0.29 / hr | $0.95 / hr | $1.79 / hr | Save 50–70% on RTX 4090 / 5090 / A100 rentals | Check Spot GPUs → |
| Vultr Cloud GPU | Enterprise SLA & Bare Metal | — | $1.79 / hr | $2.69 / hr | $300 Free Credit for New Users | Claim $300 Credit → |
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All Quantization Formats: Qwen2.5-14B-Instruct on NVIDIA RTX A6000
| Quantization Format | Bits/Weight | Weights VRAM | KV Cache (8K) | Total VRAM | Fits on 1x NVIDIA RTX A6000 (48GB)? | Est. Speed | GPUs Needed |
|---|---|---|---|---|---|---|---|
| FP16 / BF16 (Unquantized) | 16 bpw | 30.49 GB | 1.5 GB | 32.65 GB | Yes (68%) | ~16.1 tok/s | 1x NVIDIA RTX A6000 |
| FP8 (W8A8 / E4M3) | 8.5 bpw | 16.2 GB | 1.5 GB | 18.36 GB | Yes (38%) | ~30.3 tok/s | 1x NVIDIA RTX A6000 |
| GGUF Q8_0 (8-bit) | 8.5 bpw | 16.2 GB | 1.5 GB | 18.36 GB | Yes (38%) | ~30.3 tok/s | 1x NVIDIA RTX A6000 |
| GGUF Q6_K (6-bit) | 6.56 bpw | 12.5 GB | 1.5 GB | 14.66 GB | Yes (31%) | ~39.2 tok/s | 1x NVIDIA RTX A6000 |
| GGUF Q5_K_M (5-bit) | 5.69 bpw | 10.84 GB | 1.5 GB | 13 GB | Yes (27%) | ~45.2 tok/s | 1x NVIDIA RTX A6000 |
| GGUF Q4_K_M / AWQ (4-bit) | 4.85 bpw | 9.24 GB | 1.5 GB | 11.4 GB | Yes (24%) | ~53.1 tok/s | 1x NVIDIA RTX A6000 |
| GGUF IQ4_XS (4.25 bpw) | 4.25 bpw | 8.1 GB | 1.5 GB | 10.26 GB | Yes (21%) | ~60.6 tok/s | 1x NVIDIA RTX A6000 |
| GGUF Q3_K_M (3-bit) | 3.91 bpw | 7.45 GB | 1.5 GB | 9.61 GB | Yes (20%) | ~65.8 tok/s | 1x NVIDIA RTX A6000 |
Frequently Asked Questions (Qwen2.5-14B-Instruct + NVIDIA RTX A6000)
Can NVIDIA RTX A6000 (48GB) run Qwen2.5-14B-Instruct locally?
Yes — NVIDIA RTX A6000 (48GB) easily runs Qwen2.5-14B-Instruct even in full FP16. In 4-bit Q4_K_M, Qwen2.5-14B-Instruct uses only 11.4 GB of your 48 GB VRAM (24% utilization) at ~53.1 tokens/sec. In full 16-bit precision, it requires 32.65 GB.
How is KV Cache calculated for Qwen2.5-14B-Instruct?
Qwen2.5-14B-Instruct uses Dense-GQA with 48 transformer layers, 40 attention heads, and 8 KV heads (head dimension 128). At 8,192 tokens in FP16, KV cache consumes 1.5 GB. Enabling 8-bit KV cache (-ctk q8_0 -ctv q8_0 in llama.cpp or --kv-cache-dtype fp8 in vLLM) cuts this in half to 0.75 GB.