In my collection of Mac stuff is a G4 DP 1.25 MDD. That was often referred to as the Wind-tunnel because of the fan noise. My current DC 2.3 G5 was confused for a while about taking more than 6.5 GB of RAM & sometimes at startup would roar like a jet engine then fail to start. Fixed now, I've settled on 13 GB of RAM as sufficient.

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