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You need enough system RAM to fit the T5xxl model (so that's ~9GB for full fp16, only 1.2GB for q2_k) + you need some RAM for T5 compute buffer ( ~250MB). You also need to be able to fit the diffusion model file in memory (~5.1GB for Q4_0 for example) + compute buffer (that depends on resolution, around 542 MB for 512x512 images). If you're not running on CPU only, this is part on VRAM and not system RAM. For the VAE, you need about 100 MB for the model + 416 MB if you're using tiling, it depends on resolution if you're not using tiling. |
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@Green-Sky --- I had a question related to this. i guess it's not talked about much, but is the T5 encoder requirement really needed? I've always used the plain clip_l.safetensors alone for prompt testing Flux Schnell since the early days. i guess some UI implementations just zero out the input / output. It works totally fine without the T5. You just use the older style SD1.5 prompting and lose a bit of prompt accuracy / complexity. as far as i know, Chroma is basically just Schnell with some minor differences. |
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