Qwen3.5-27B
Qwen · Apache 2.0
Dense 27B from the Qwen 3.5 family. Native multimodal (text, image, video). 256K context window. Competitive with Gemma 3 27B and Qwen 3 32B at lower VRAM. Apache 2.0.
- Parameters
- 27B
- Architecture
- Dense
- Context
- 262,144 tokens
- Released
- 2026-02-24
- Engines
- llama.cpp, ollama, vLLM
- Builder Tools
- Continue, LM Studio, Open WebUI
Parameters
27B
VRAM
19 GB
Context
256K
Formats
4
GPUs
43
Qwen3.5-27B (27B) requires 19 GB VRAM at recommended quality (Q5_K_M). At efficient quality (Q4_K_M), it fits in 16 GB VRAM, making it compatible with the NVIDIA RTX 4090 Laptop (150-175W). On NVIDIA Grace Blackwell Ultra GB300, expect approximately 150 tok/s at Q8_0. For the best experience, AMD AI Powerhouse ($1,818) is recommended.
Source: OwnRig methodology
19 GB
Q5_K_M
18 GB
256K tokens
Chat
VRAM Requirements
| Quality | Quantization | VRAM | File Size |
|---|---|---|---|
| full | Q8_0 | 29 GB | 27 GB |
| recommended | Q5_K_M | 19 GB | 18 GB |
| efficient | Q4_K_M | 16 GB | 15 GB |
| compressed | Q3_K_M | 14 GB | 13 GB |
Context Length Impact
KV cache VRAM at Q5_K_M quality. Longer context = more memory.
| Context | KV Cache | Total VRAM |
|---|---|---|
| 2K | 205 MB | 19.2 GB |
| 4K | 410 MB | 19.4 GB |
| 8K | 819 MB | 19.8 GB |
| 16K | 1.6 GB | 20.6 GB |
| 32K | 3.2 GB | 22.2 GB |
| 64K | 6.4 GB | 25.4 GBexceeds 24 GB |
| 128K | 12.8 GB | 31.8 GBexceeds 24 GB |
Compatible GPUs
43 devicesShowing 43 of 43 entries
Builder Context
Qwen3.5-27B is commonly used with Continue, LM Studio, Open WebUI. For an AI coding workflow, pair it with an embedding model like nomic-embed-text for local RAG.
Frequently Asked Questions
- How much VRAM does Qwen3.5-27B need?
- Qwen3.5-27B requires 19 GB VRAM at recommended quality (Q5_K_M). At lower quality settings, it can fit in as little as 14 GB.
- What is the best GPU for Qwen3.5-27B?
- The NVIDIA Grace Blackwell Ultra GB300 delivers the best performance for Qwen3.5-27B, achieving 150 tok/s at Q8_0 with an excellent rating.
- Can I run Qwen3.5-27B on an RTX 4060 Ti?
- Yes. On the NVIDIA GeForce RTX 4060 Ti 16GB, Qwen3.5-27B runs at 25 tok/s (Q3_K_M, acceptable).
- What quantization should I use for Qwen3.5-27B?
- For the best quality, use Q5_K_M (19 GB VRAM). If your GPU has limited VRAM, Q3_K_M (14 GB) is the most efficient option with acceptable quality.
- Is Qwen3.5-27B good for coding?
- Yes. Qwen3.5-27B is used with Continue, LM Studio, Open WebUI for local AI coding. For the best coding experience, pair it with an embedding model for local RAG.
Data confidence: estimated. Source
VRAM requirements are calculated from model parameters and may vary by inference engine, context length, and batch size. Performance estimates are based on community benchmarks and should be verified for your specific configuration.Qwen is a trademark of its respective owner. OwnRig is not affiliated with or endorsed by the model creator.