Hardware configuration
Core i5 12400F
32G RAM
RTX 3060 8G VRAM
Comfyui Setup
--normalvram
.\python_embeded\python.exe -s ComfyUI\main.py --normalvram --windows-standalone-buildfixed seed=1
no negative prompts
Basic comparison
FLUX is faster using "default" than "fp8-e4m3fn"
FLUX in terms of speed, fp8 and fp16 are almost the same
FLUX-dev is super slow no matter fp16 or fp8
Image comparison
a female character with long, flowing hair that appears to be made of ethereal, swirling patterns resembling the Northern Lights or Aurora Borealis. The background is dominated by deep blues and purples, creating a mysterious and dramatic atmosphere. The character's face is serene, with pale skin and striking features. She wears a dark-colored outfit with subtle patterns. The overall style of the artwork is reminiscent of fantasy or supernatural genres
Digital art, portrait of an anthropomorphic roaring Tiger warrior with full armor, close up in the middle of a battle, behind him there is a banner with the text "Open Source".
FLUX-schnell has 4 eyes or 2 noses
photo of a dog and a cat both standing on a red box, with a blue ball in the middle with a parrot standing on top of the ball. The box has the text "SD3"
FLUX-schnell low-res
selfie photo of a wizard with long beard and purple robes, he is apparently in the middle of Tokyo. Probably taken from a phone.
A vibrant street wall covered in colorful graffiti, the centerpiece spells "SD3 MEDIUM", in a storm of colors
photo of a young woman with long, wavy brown hair tied in a bun and glasses. She has a fair complexion and is wearing subtle makeup, emphasizing her eyes and lips. She is dressed in a black top. The background appears to be an urban setting with a building facade, and the sunlight casts a warm glow on her face.
anime art of a steampunk inventor in their workshop, surrounded by gears, gadgets, and steam. He is holding a blue potion and a red potion, one in each hand
photo of picturesque scene of a road surrounded by lush green trees and shrubs. The road is wide and smooth, leading into the distance. On the right side of the road, there's a blue sports car parked with the license plate spelling "SD32B". The sky above is partly cloudy, suggesting a pleasant day. The trees have a mix of green and brown foliage. There are no people visible in the image. The overall composition is balanced, with the car serving as a focal point.
The license plates:
photo of young man in a black suit, white shirt, and black tie. He has a neatly styled haircut and is looking directly at the camera with a neutral expression. The background consists of a textured wall with horizontal lines. The photograph is in black and white, emphasizing contrasts and shadows. The man appears to be in his late twenties or early thirties, with fair skin and short, dark hair.
FLUX-schnell low-res
photo of a woman on the beach, shot from above. She is facing the sea, while wearing a white dress. She has long blonde hair
a woman laying on grass
a woman lying on the beach
a man showing his bands
My opinion
If you have a powerful computer, FLUX-dev is the king of txt2img open source models. But it takes 5 times as long to generate an image as SD3.
FLUX-schnell is not an excellent model, it often generates low-res images. Like SD3, deformed images will be generated.
"lying" seems to be a common issue for all models, not just SD3. I think fine-tune can solve it. On the contrary, the problem of low-res is more serious.
Balance efficiency and quality. If you're like me and don't have a powerful computer, or don't want to spend 2-3 minutes generating an image. SD3 would be the second choice. I do not recommend FLUX-schnell.
In the end, it still depends on which side the developers will stand on.