Bartowski Q2_XXS 125B Parameters

VRAM Requirements for
BigQwen2.5-125B-Instruct-GGUF Q2_XXS

To run BigQwen2.5-125B-Instruct-GGUF locally at Q2_XXS quantization, you need at minimum 43.11 GB of GPU VRAM.

43.11 GB
Required VRAM
39.06 GB
File Size
8K tokens
Context Window
125B
Parameters
Estimated VRAM Required
43.11
GB
Prosumer / Workstation
0 16GB
RTX 3080 48GB
A6000 80GB+

Recommended GPU Configurations

Budget $1,200 – $1,800

2× RTX 3090 (48GB total)

48 GB

Dual-GPU via tensor parallelism. Best cost per GB at this tier.

Balanced $4,000 – $5,500

NVIDIA A6000 (48GB)

48 GB

Single-card 48GB pro GPU. Clean setup, no multi-GPU overhead.

⚠️ 3.1 GB short
Ultimate $8,000 – $12,000

NVIDIA A100 40GB SXM

40 GB HBM2e

Data-centre HBM2e bandwidth. Dramatically faster throughput.

📊 VRAM Calculation Breakdown

Model File Size (Q2_XXS) 39.06 GB
Context Overhead (8,192 tokens × 125B × 2 ÷ 1M) 2.048 GB
System Buffer (OS + CUDA runtime) 2.00 GB
Total Required VRAM 43.11 GB

Try a Different Quantization

Use the interactive calculator to compare BigQwen2.5-125B-Instruct-GGUF across all available formats.

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BigQwen2.5-125B-Instruct-GGUF — Other Quantizations

Q2_K 39.06 GB file
43.11 GB
Q2_K_L 39.06 GB file
43.11 GB
Q2_M 39.06 GB file
43.11 GB
Q2_XS 39.06 GB file
43.11 GB
Q2_XXS Current
43.11 GB
Q3_K_XL 54.69 GB file
58.74 GB
Q3_XXS 54.69 GB file
58.74 GB
Q3_M 54.69 GB file
58.74 GB
Q3_K_S 54.69 GB file
58.74 GB
Q3_K_M 54.69 GB file
58.74 GB
Q3_K_L 54.69 GB file
58.74 GB
Q4_0 70.31 GB file
74.36 GB
Q4_K_M 70.31 GB file
74.36 GB
Q4_XS 70.31 GB file
74.36 GB
Q5_K_M 85.94 GB file
89.99 GB
Q6_K 101.56 GB file
105.61 GB
Q1_M 125 GB file
129.05 GB
Q8_0 132.81 GB file
136.86 GB
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Frequently Asked Questions

Can I run BigQwen2.5-125B-Instruct-GGUF Q2_XXS on a consumer GPU?
Running BigQwen2.5-125B-Instruct-GGUF Q2_XXS locally requires 43.11 GB VRAM, which exceeds consumer GPUs. You'll need prosumer cards like the NVIDIA A6000 (48GB) or an A100 (80GB).
What happens if I don't have enough VRAM?
If your GPU VRAM is insufficient, llama.cpp and similar tools will offload model layers to system RAM (CPU inference). This is much slower — expect 10-50× the generation latency compared to full GPU inference.
Can I use multiple GPUs to run BigQwen2.5-125B-Instruct-GGUF?
Yes! Tools like llama.cpp, vLLM, and Ollama support tensor parallelism across multiple GPUs. For example, 2× RTX 3090 (24GB each) gives you 48GB total VRAM, which can run many large models.
Is Q2_XXS quality good enough for production?
Q2_XXS is suitable for specialized use cases. Check community benchmarks for specific quality metrics.