FLUX.2 Klein — bf16 vs FP8 vs NVFP4 on RTX 5090
Timings & VRAM
| Variant | CFG | Steps | Load | Avg gen / prompt | Peak VRAM | Success |
|---|---|---|---|---|---|---|
| bf16 | 1.0 | 4 | 3.1s | 1.1s | 17.32 GB | 10 / 10 |
| nvfp4 | 1.0 | 4 | 1.6s | 0.8s | 10.09 GB | 10 / 10 |
| fp8 | 1.0 | 4 | 1.4s | 0.9s | 9.88 GB | 10 / 10 |
Same seed (42), 1024×1024, 4 steps, CFG 1.0. bf16 = quality ceiling (full bf16 TE + default VAE). fp8 + nvfp4 share fp8 TE + small VAE; only the DiT precision differs. mmgp HighRAM_HighVRAM (full co-residency, no CPU offloading on the 5090).
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Dog wrapped in white towel after bath, photographed with direct flash and high exposure, fur wet details sharply visible, editorial raw portrait, cinematic harsh flash lighting, intimate humorous documentary style.
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Soaking wet tiger cub taking shelter under a banana leaf in the rainy jungle, close up photo
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An old faded family portrait photograph from the early 1900s showing a family of five standing stiffly in front of their modest wooden farmhouse.
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Ultra-wide 4MP environment concept art of a dense sci-fi megacity at night, elevated view, layered skyscrapers with holographic billboards, flying vehicles crisscrossing the sky, moody blue and magenta color palette, light fog, sharp but painterly rendering.
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High-fidelity mockup of a mobile fitness app on a modern smartphone, showing a dashboard screen with readable labels: "Today", "Steps", "Calories", and a graph of weekly progress. Clean, flat UI design, white cards on a soft gradient background, sharp text and icons, 4MP resolution.
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High-fashion campaign image of a model in a flowing metallic silver coat standing in a minimalist concrete room, dramatic side lighting creating long shadows, glossy reflections on the floor, cinematic 16:9 composition, cool-toned color grade, extremely detailed fabrics and skin.
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A bohemian-style female travel blogger with sun-kissed skin and messy beach waves, sitting on a tropical beach at sunset. She’s wearing a flowy white sundress and holding up a weathered postcard with “/u/WanderlustDreamer” scrawled on it. Golden hour lighting bathes the scene in warm tones.
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A close-up portrait of a young woman with freckles and auburn hair, holding a vintage tarot card in front of her face. Only her curious green eyes are visible above the ornate card design. Soft, warm lighting creates a mystical atmosphere.
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A tiny astronaut hatching from an egg on the moon.
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Anthropomorphic penguin in disheveled formal wear hunched on worn leather bar stool, dimly lit neighborhood bar, shot on 35mm film f/2.8, 50mm lens, practical lighting from overhead warm bar lamps and neon signs, film grain, slight desaturation, Rembrandt lighting creating dramatic face shadows, half-empty whiskey glass in sharp focus, blurred bottles background, melancholic atmosphere, rule of thirds, lonely late-night mood,
