Can Flux.1 Fill Dev run on Mac Studio M1 Ultra 128GB?
YES — Runs Great
S90Excellent
Flux.1 Fill Dev needs ~32.0 GB VRAM. Mac Studio M1 Ultra 128GB has 92.2 GB.
32.0 GB required92.2 GB available
35% VRAM used
Parameters
12B
Precision
FP16
Max Resolution
1024×1024
VRAM
32.0 GB / 92.2 GB
Gen Time
~3m 13s
Performance by workload
| Workload | Grade | Fit | VRAM | Gen Time |
|---|---|---|---|---|
| Quick | S | Runs natively | 31.5 GB | ~3m 13s |
| Standard | S | Runs natively | 32.0 GB | ~3m 13s |
| High Quality | S | Runs natively | 32.0 GB | ~3m 13s |
Resolution compatibility
How Flux.1 Fill Dev (12B params) performs at each resolution on Mac Studio M1 Ultra 128GB (92.2 GB usable).
| Resolution | VRAM Required | Mac Studio M1 Ultra 128GB |
|---|---|---|
| 512×512 | 31.5 GB | S● |
| 768×768 | 31.7 GB | S● |
| 1024×1024 | 32.0 GB | S● |
Memory breakdown
Required: 32.0 GBAvailable: 92.2 GB
Weights24.0 GB
VAE0.2 GB
Text Encoder9.6 GB
Activations0.8 GB
Overhead0.5 GB
Frequently asked questions
Can Mac Studio M1 Ultra 128GB run Flux.1 Fill Dev?
Yes, Mac Studio M1 Ultra 128GB can run Flux.1 Fill Dev for image generation. Runs natively.
How much VRAM does Flux.1 Fill Dev need?
Flux.1 Fill Dev (12B parameters) requires approximately 32.0 GB at FP16. Mac Studio M1 Ultra 128GB provides 92.2 GB.
What resolution can Flux.1 Fill Dev produce on Mac Studio M1 Ultra 128GB?
On Mac Studio M1 Ultra 128GB, Flux.1 Fill Dev can generate images at up to 1024x1024. Generation time is approximately 192.6 seconds per image.
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<iframe src="https://willitrunai.com/embed/flux-1-fill-dev-on-m1-ultra-128gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
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