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You're probably thinking of a different case again. The a4-sfx fits a 300mm 2.2 slot GPU at the most, so 4090 Fe is out of the question. The most powerful cards it can do are EVGA 3090 xc3 or Inno3D 4070 Ti. Someone crazy could maybe do a custom watercooling loop for the 4090 but it would be hacky indeed.