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Unverified60% confidenceFactExact time

INT4 相较 FP16 实现了 4 倍存储压缩

2

Sources

60%

Confidence

Long-term

Relevance

7/12/2026

First Seen

Sources

INT4 ConvRot W4A4量化：ComfyUI低显存运行大型图像模型实战

redditr/comfyui7/11/2026

Related Claims

Partially Verified标准的FP32模型每个参数占用4字节，而INT4量化将其压缩至0.5字节，理论上可实现8倍的内存节省80% similar Verified4-bit量化使模型存储空间缩减为FP16的约1/478% similar Unverified一张1024×1024的未压缩RGBA纹理占据4MB存储空间75% similar UnverifiedBlackwell将FP4引入推理，配合微缩放技术可将权重存储压缩至FP16的1/475% similar Unverified量化KV缓存（如FP8或INT4存储KV向量）可将缓存大小压缩到原来的1/2甚至1/475% similar

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