My Centris 650 (aka Quadra 650) has 80MB of installed memory, including on-board memory. It has two 72 pin memory slots. This appears to be odd. First, I am "missing" two memory slots. Second, to get 80MB with two memory slots (assuming 8MB on-board maximum) would require one 64MB SIMM and one 8MB SIMM.
Can anyone provide some insight. I do not know if the logic board could be swapped for one from another Mac. Or if there were revisions to the Centris 650 board. I will have to have another look at the motherboard.
Thank you in advance.
Tristan.
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