FLUX.2 [klein] 9B on 24 GB of VRAM
Yes. 16-bit fits on 24 GB with 3.5 GB to spare. A distilled 9B FLUX.2 for fast generation and editing in a few steps. Much lighter than FLUX.2 dev.
Runs well
Yes.
Take 16-bit (18.2 GB). In use it comes to about 20.5 GB, with 3.5 GB left over on 24 GB.
Best file16-bit
File size18.2 GB
VRAM needed~20.5 GB
System RAM48 GB+
Memory map · 24 GB GPU20.5 GB / 24 GB
012 GB24 GB
Weights 16-bit · 18.2 GBWorking memory · 1.5 GBReserve · 0.8 GBFree · 3.5 GB
calculated How this is counted.
01What to download
| Part | File | Folder | Size | |
|---|---|---|---|---|
| Model | flux-2-klein-9b.safetensors 16-bit · black-forest-labs/FLUX.2-klein-9B | models/diffusion_models | 18.2 GB | Download → |
| Text encoder | qwen_3_8b_fp8mixed.safetensors Qwen3 8B FP8 · Comfy-Org/flux2-klein-9B | models/text_encoders | 8.7 GB | Download → |
| VAE | flux2-vae.safetensors FLUX.2 VAE · Comfy-Org/flux2-dev | models/vae | 0.3 GB | Download → |
| Total download · keep about the same free on disk | 27.2 GB | |||
Alternatives: Qwen3 8B BF16 (16.4 GB). Sizes from Hugging Face, 2026-10-01.
Free ComfyUI workflow, tested on my RTX 5060 Ti: GGUF Q8_0 workflow (.json). Drag the file into ComfyUI. All workflows →
System RAM: 48 GB or more. These files take about 27.2 GB of RAM while loaded, 33.2 GB with Windows and ComfyUI. What happens with less. calculated
02Every file, on 24 GB
| File | Size | Needed | On this card | Quality | Download |
|---|---|---|---|---|---|
| 16-bit ← SAFETENSORS · black-forest-labs | 18.2 GB | 20.5 GB | fits · 3.5 GB spare | the original weights | Hugging Face → |
| Q8_0 GGUF · unsloth | 10.0 GB | 12.3 GB | fits · 11.7 GB spare | practically identical to the original | Hugging Face → |
| FP8 SAFETENSORS · black-forest-labs | 9.4 GB | 11.7 GB | fits · 12.3 GB spare | practically identical to the original | Hugging Face → |
| Q6_K GGUF · unsloth | 7.9 GB | 10.2 GB | fits · 13.8 GB spare | very close to the original | Hugging Face → |
| Q5_K_M GGUF · unsloth | 7.0 GB | 9.3 GB | fits · 14.7 GB spare | close; small differences in fine detail | Hugging Face → |
| Q4_K_M GGUF · unsloth | 5.9 GB | 8.2 GB | fits · 15.8 GB spare | good; some loss in fine detail and text | Hugging Face → |
| Q3_K_M GGUF · unsloth | 4.8 GB | 7.1 GB | fits · 16.9 GB spare | noticeable loss of detail | Hugging Face → |
| Q2_K GGUF · unsloth | 4.0 GB | 6.3 GB | fits · 17.7 GB spare | heavy loss; a last resort | Hugging Face → |
“Needed” adds 1.5 GB of working memory for FLUX.2 klein 9B and a 0.8 GB reserve. Sizes 2026-10-01.