Why did the G5 chip bellyflop? The world's first 64-bit consumer cpu looks fraudulent, like it's really a twin 32-bit cores which pretends (thanks to being risc not cisc) to be 64-bits per cycle by daisychaining the two cores whenever necessary.
The transistor count of the first G5 is 2X that of a contemporary 32-bit cpu. The power consumption and heat output is also 2X 32-bits. The Mirror Door models' backward sidefan & unnecessary highheat seems to have paved the way for a bad G5, Apple turned off the napmode to reinforce dishonesty about a trend in high heat spanning from G4 to G5.
Inside this G5, Actual 64-bit instructions are a tiny percentage of total instructions, so basically the 2x32-bit G5 fools us when it contains an entire 32-bit cpu hidden and not under our control. That was those years 2002/2003.