Ideogram 4 on 32 GB of VRAM
Yes. Q8_0 fits on 32 GB with 9.4 GB to spare. Ideogram's open-weights model (June 2026, non-commercial). It uses two transformers at once - a main one and an "unconditional" one - so it needs about twice the memory of one file.
Q8_0 (10.1 GB (×2, both loaded)) needs about 22.6 GB in use, so 9.4 GB of the 32 GB stays free: room for a larger image, a LoRA or a ControlNet.
Got an RTX 40 or 50? Swap Q8_0 for FP8 (9.3 GB): same quality class, computed natively there.
01What to download
| Part | File | Folder | Size | |
|---|---|---|---|---|
| Model | ideogram4-transformer-q8_0.gguf main model Q8_0 · molbal/ideogram-4-gguf | models/unet | 10.1 GB | Download → |
| Model | ideogram4-unconditional_transformer-q8_0.gguf unconditional model, loaded together with the main one Q8_0 · molbal/ideogram-4-gguf | models/unet | 10.1 GB | Download → |
| Text encoder | qwen3vl_8b_fp8_scaled.safetensors Qwen3-VL 8B FP8 · Comfy-Org/Ideogram-4 | models/text_encoders | 10.6 GB | Download → |
| VAE | flux2-vae.safetensors FLUX.2 VAE · Comfy-Org/Ideogram-4 | models/vae | 0.3 GB | Download → |
| Total download · keep about the same free on disk | 31.2 GB | |||
Alternatives: Qwen3-VL 8B NVFP4 (6.3 GB). FP4 files are listed only as alternatives unless the GPU is an RTX 50 (Blackwell). Sizes from Hugging Face, 2026-10-01.
System RAM: 48 GB or more. These files (both noise models) take about 31.2 GB of RAM while loaded, 37.2 GB with Windows and ComfyUI. What happens with less. calculated
02Every file, on 32 GB
| File | Size | Needed | On this card | Quality | Download |
|---|---|---|---|---|---|
| Q8_0 ← GGUF · molbal | 10.1 GB ×2 | 22.6 GB | fits · 9.4 GB spare | practically identical to the original | Hugging Face → |
| FP8 SAFETENSORS · Comfy-Org | 9.3 GB ×2 | 20.9 GB | fits · 11.1 GB spare | practically identical to the original | Hugging Face → |
| INT8 SAFETENSORS · Comfy-Org | 9.6 GB ×2 | 21.5 GB | fits · 10.5 GB spare | practically identical to the original | Hugging Face → |
| Q5_1 GGUF · molbal | 7.3 GB ×2 | 17.0 GB | fits · 15.0 GB spare | close; small differences in fine detail | Hugging Face → |
| Q4_1 GGUF · molbal | 6.2 GB ×2 | 14.7 GB | fits · 17.3 GB spare | good; some loss in fine detail and text | Hugging Face → |
“Needed” adds 1.5 GB of working memory for Ideogram 4 and a 0.8 GB reserve. Sizes 2026-10-01. Needs two transformer files loaded together (main + unconditional). GGUF files need the molbal fork of ComfyUI-GGUF. No 16-bit weights were released.