FLUX.1 Dev on NVIDIA GeForce RTX 4070 Ti 12GB
NVIDIA GeForce RTX 4070 Ti 12GB cannot run FLUX.1 Dev at any quantization level. The 12 GB of VRAM is insufficient.
Model Size
12B
Device VRAM
12 GB
Bandwidth
504 GB/s
Quantizations Tested
1
Performance by Quantization
Each row shows FLUX.1 Dev performance at a different quality level on NVIDIA GeForce RTX 4070 Ti 12GB.
| Quantization | Speed | TTFT | Fits in VRAM | Rating | Confidence |
|---|---|---|---|---|---|
| Q8_0 | — | — | ✗ Offload | Not Viable | estimated |
Notes
Q8_0
12B image model. Q8_0 needs 13GB. Q4_K_M (7.2GB) would fit but quality loss significant.
About FLUX.1 Dev
FLUX.1 Dev (12B) is a image gen model. State-of-the-art image generation. Significantly better prompt adherence and image quality than SDXL. 12B parameter transformer model (not diffusion UNet). FP16 requires 24GB VRAM, but Q4 quantization brings it to 8GB GPUs. Non-commercial license.
View all FLUX.1 Dev hardware options →About NVIDIA GeForce RTX 4070 Ti 12GB
NVIDIA GeForce RTX 4070 Ti 12GB has 12 GB at 504 GB/s. Street price: $749.
See all models NVIDIA GeForce RTX 4070 Ti 12GB can run →Source: Q8_0 13GB exceeds 12GB. FP16 23.8GB far exceeds (2026-03-15)
Data last updated: 2026-03-01