Richardyoung Q3_0 72B Parameters

VRAM Requirements for
kat-dev-72b Q3_0

To run kat-dev-72b locally at Q3_0 quantization, you need at minimum 34.68 GB of GPU VRAM.

34.68 GB
Required VRAM
31.5 GB
File Size
8K tokens
Context Window
72B
Parameters
Estimated VRAM Required
34.68
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.

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 (Q3_0) 31.5 GB
Context Overhead (8,192 tokens × 72B × 2 ÷ 1M) 1.18 GB
System Buffer (OS + CUDA runtime) 2.00 GB
Total Required VRAM 34.68 GB

Try a Different Quantization

Use the interactive calculator to compare kat-dev-72b across all available formats.

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kat-dev-72b — Other Quantizations

Q2_0 22.5 GB file
25.68 GB
Q3_0 Current
34.68 GB
Q4_0 40.5 GB file
43.68 GB
FP16 144 GB file
147.18 GB
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Frequently Asked Questions

Can I run kat-dev-72b Q3_0 on a consumer GPU?
Running kat-dev-72b Q3_0 locally requires 34.68 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 kat-dev-72b?
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 Q3_0 quality good enough for production?
Q3_0 is suitable for specialized use cases. Check community benchmarks for specific quality metrics.