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max ram mac pro

  1. Caligator

    Maximum RAM 4 slots

    I'm experiencing slow performance and wondering if my RAM configuration is slowing my Mac Pro mid 2012 5.1, 3.2 GHz Quad-Core Xeon. Running Big Sur 11.7.1 with Opencore. I have 48 GB 1066 DDR3 ram, 2 x 16; 2 x 8 set up. Here's a pic of the config. How should I configure for max performance...