Can a NVIDIA GeForce RTX 4090 run FLUX.1 Dev?
NVIDIA GeForce RTX 4090 has 24GB VRAM. Here's exactly whichquantization (FP16, FP8, GGUF)of FLUX.1 Dev fits and how smoothly it runs.
Runs locally — recommended
This GPU has enough VRAM for FLUX.1 Dev. Best pick: FP8 (Fast, Recommended) (~11.9GB) with 10.1GB headroom.
11.9GB
smallest fit on this GPU
Run it locally
NVIDIA GeForce RTX 4090 (24GB) · ~$1800 is a solid fit for FLUX.1 Dev.
Disclosure: As an Amazon Associate we earn from qualifying purchases. eBay links are referrals.
FLUX.1 Dev variants on the NVIDIA GeForce RTX 4090
| Variant | Precision | Size | Total VRAM needed | Headroom | Fits? | |
|---|---|---|---|---|---|---|
| Q4_K_M (Balanced) | GGUF Q4_K_M | 7.2GB | 9.2GB | +14.8GB | ✓ Fits | Download ↗ |
| FP8 (Fast, Recommended)REC | FP8 | 11.9GB | 13.9GB | +10.1GB | ✓ Fits | Download ↗ |
| Q8_0 (High Quality) | GGUF Q8_0 | 13.8GB | 15.8GB | +8.2GB | ✓ Fits | Download ↗ |
| BF16 (Original) | BF16 | 23.8GB | 25.8GB | -1.8GB | ⚠ Tight | Download ↗ |
"Total VRAM needed" = variant size + 2.0GB estimated text-encoder/VAE overhead. Headroom = GPU VRAM (24GB) − total needed. Green ≥ 1.5GB headroom; Red ≤ −2GB (will OOM).
NVIDIA GeForce RTX 4090 at a glance
VRAM
24GB
Est. price
$1800
Best for
23.8GB FLUX.1 Dev and lighter
Other models on the NVIDIA GeForce RTX 4090
FLUX.1 SchnellStable Diffusion XL (SDXL)Stable Diffusion 1.5Stable Diffusion 3 (SD3)Hunyuan VideoWan 2.1 VideoPony DiffusionLlama 3.2 (1B)Llama 3.2 (3B)Llama 3 / 3.1 (8B)DeepSeek-R1 Distill Qwen (7B)DeepSeek-R1 Distill Qwen (14B)
Other GPUs for FLUX.1 Dev
NVIDIA GeForce RTX 3060 (12GB)NVIDIA GeForce RTX 4060 (8GB)NVIDIA GeForce RTX 4070 (12GB)NVIDIA GeForce RTX 4070 Ti (12GB)NVIDIA GeForce RTX 4080 (16GB)NVIDIA GeForce RTX 3080 (10GB)NVIDIA GeForce RTX 3090 (24GB)NVIDIA GeForce RTX 3070 (8GB)NVIDIA GeForce RTX 4060 Ti (16GB) (16GB)NVIDIA GeForce GTX 1650 (4GB)NVIDIA GeForce RTX 3050 (8GB)Apple MacBook Pro (M3 Max) (36GB)