Qwen3 4B Instruct 2507 — Hardware Requirements & GPU Compatibility
Chat
Qwen3 4B Instruct 2507 is a July 2025 refresh of Alibaba's compact 4-billion-parameter chat model from the Qwen3 family. This updated release brings improved instruction following and conversational quality while remaining lightweight enough to run on most modern GPUs and even some higher-end integrated graphics setups. With its modest size, the 4B Instruct 2507 strikes a practical balance between capability and resource efficiency. It is well suited for everyday chat, summarization, and light assistant tasks on consumer hardware, making it one of the more accessible entry points into the Qwen3 lineup.
3.8M downloads
768 likesSpecifications
- Publisher
- Alibaba
- Family
- Qwen
- Parameters
- 4B
- Architecture
- Qwen3ForCausalLM
- Context Length
- 262,144 tokens
- Vocabulary Size
- 151,936
- Release Date
- 2025-09-17
- License
- Apache 2.0
Get Started
HuggingFace
How Much VRAM Does Qwen3 4B Instruct 2507 Need?
Select a quantization to see compatible GPUs below.
| Quantization | Bits | VRAM | + Context | File Size | Quality |
|---|---|---|---|---|---|
| IQ2_M | 2.70 | 1.8 GB | 25.8 GB | 1.35 GB | Importance-weighted 2-bit, medium |
| IQ3_XXS | 3.10 | 2.0 GB | 26.0 GB | 1.55 GB | Importance-weighted 3-bit |
| IQ3_XS | 3.30 | 2.1 GB | 26.1 GB | 1.65 GB | Importance-weighted 3-bit, extra small |
| Q2_K | 3.40 | 2.2 GB | 26.2 GB | 1.70 GB | 2-bit quantization with K-quant improvements |
| Q3_K_S | 3.50 | 2.2 GB | 26.2 GB | 1.75 GB | 3-bit small quantization |
| IQ3_M | 3.60 | 2.3 GB | 26.3 GB | 1.80 GB | Importance-weighted 3-bit, medium |
| Q3_K_M | 3.90 | 2.4 GB | 26.4 GB | 1.95 GB | 3-bit medium quantization |
| Q4_0 | 4.00 | 2.5 GB | 26.5 GB | 2.00 GB | 4-bit legacy quantization |
| Q3_K_L | 4.10 | 2.5 GB | 26.5 GB | 2.05 GB | 3-bit large quantization |
| IQ4_XS | 4.30 | 2.6 GB | 26.6 GB | 2.15 GB | Importance-weighted 4-bit, compact |
| Q4_1 | 4.50 | 2.7 GB | 26.7 GB | 2.25 GB | 4-bit legacy quantization with offset |
| Q4_K_S | 4.50 | 2.7 GB | 26.7 GB | 2.25 GB | 4-bit small quantization |
| IQ4_NL | 4.50 | 2.7 GB | 26.7 GB | 2.25 GB | Importance-weighted 4-bit, non-linear |
| Q4_K_M | 4.80 | 2.9 GB | 26.9 GB | 2.40 GB | 4-bit medium quantization — most popular sweet spot |
| Q4_K_L | 4.90 | 2.9 GB | 26.9 GB | 2.45 GB | 4-bit large quantization |
| Q5_K_S | 5.50 | 3.2 GB | 27.2 GB | 2.75 GB | 5-bit small quantization |
| Q5_K_M | 5.70 | 3.3 GB | 27.3 GB | 2.85 GB | 5-bit medium quantization — good quality/size tradeoff |
| Q5_K_L | 5.80 | 3.4 GB | 27.4 GB | 2.90 GB | 5-bit large quantization |
| Q6_K | 6.60 | 3.8 GB | 27.8 GB | 3.30 GB | 6-bit quantization, very good quality |
| Q8_0 | 8.00 | 4.5 GB | 28.5 GB | 4.00 GB | 8-bit quantization, near-lossless |
Which GPUs Can Run Qwen3 4B Instruct 2507?
Q4_K_M · 2.9 GBQwen3 4B Instruct 2507 (Q4_K_M) requires 2.9 GB of VRAM to load the model weights. For comfortable inference with headroom for KV cache and system overhead, 4+ GB is recommended. Using the full 262K context window can add up to 24.0 GB, bringing total usage to 26.9 GB. 35 GPUs can run it, including NVIDIA GeForce RTX 5090, NVIDIA GeForce RTX 3090 Ti.
Runs great
— Plenty of headroomWhich Devices Can Run Qwen3 4B Instruct 2507?
Q4_K_M · 2.9 GB33 devices with unified memory can run Qwen3 4B Instruct 2507, including NVIDIA DGX H100, NVIDIA DGX A100 640GB.
Runs great
— Plenty of headroomRelated Models
Derivatives (9)
Frequently Asked Questions
- How much VRAM does Qwen3 4B Instruct 2507 need?
Qwen3 4B Instruct 2507 requires 2.9 GB of VRAM at Q4_K_M, or 4.5 GB at Q8_0. Full 262K context adds up to 24.0 GB (26.9 GB total).
VRAM = Weights + KV Cache + Overhead
Weights = 4B × 4.8 bits ÷ 8 = 2.4 GB
KV Cache + Overhead ≈ 0.5 GB (at 2K context + ~0.3 GB framework)
KV Cache + Overhead ≈ 24.5 GB (at full 262K context)
VRAM usage by quantization
Q4_K_M2.9 GBQ4_K_M + full context26.9 GB- What's the best quantization for Qwen3 4B Instruct 2507?
For Qwen3 4B Instruct 2507, Q4_K_M (2.9 GB) offers the best balance of quality and VRAM usage. Q4_K_L (2.9 GB) provides better quality if you have the VRAM. The smallest option is IQ2_M at 1.8 GB.
VRAM requirement by quantization
IQ2_M1.8 GB~62%IQ3_M2.3 GB~78%Q4_12.7 GB~88%Q4_K_M ★2.9 GB~89%Q4_K_L2.9 GB~90%Q8_04.5 GB~99%★ Recommended — best balance of quality and VRAM usage.
- Can I run Qwen3 4B Instruct 2507 on a Mac?
Qwen3 4B Instruct 2507 requires at least 1.8 GB at IQ2_M, which exceeds the unified memory of most consumer Macs. You would need a Mac Studio or Mac Pro with a high-memory configuration.
- Can I run Qwen3 4B Instruct 2507 locally?
Yes — Qwen3 4B Instruct 2507 can run locally on consumer hardware. At Q4_K_M quantization it needs 2.9 GB of VRAM. Popular tools include Ollama, LM Studio, and llama.cpp.
- How fast is Qwen3 4B Instruct 2507?
At Q4_K_M, Qwen3 4B Instruct 2507 can reach ~1009 tok/s on AMD Instinct MI300X. On NVIDIA GeForce RTX 4090: ~227 tok/s. Speed depends mainly on GPU memory bandwidth. Real-world results typically within ±20%.
tok/s = (bandwidth GB/s ÷ model GB) × efficiency
Example: AMD Instinct MI300X → 5300 ÷ 2.9 × 0.55 = ~1009 tok/s
Estimated speed at Q4_K_M (2.9 GB)
AMD Instinct MI300X~1009 tok/sNVIDIA GeForce RTX 4090~227 tok/sNVIDIA H100 SXM~754 tok/sAMD Instinct MI250X~624 tok/sReal-world results typically within ±20%. Speed depends on batch size, quantization kernel, and software stack.
- What's the download size of Qwen3 4B Instruct 2507?
At Q4_K_M, the download is about 2.40 GB. The full-precision Q8_0 version is 4.00 GB. The smallest option (IQ2_M) is 1.35 GB.