Let's see if I can walk through this in a coherent answer:
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Let's see if I can walk through this in a coherent manner (it's not easy to explain overall differences over multiple models):
* Looking at the logic boards:
** The 933 MHz/1 GHz (128 RAM) had 3 wall power and speaker connectors, a standard optical drive connector, the modem connector is "tall" and vertical, the fan connector is horizontal, and the upper case connector is a 4-pin connector.
** The 1 GHz (256 RAM)/1.2 GHz changed the modem connector to a shorter connector, and the fan connector is vertical (a slightly different cable length, I believe). Therefore, you would need a new modem, and fan in addition to the logic board. The RJ-11 board also got 1/4" shorter, so you will probably need a new one of those as well.
** The 1.33 GHz changed to 4 wall power and speaker connectors, a ZIF-type optical drive connector, a tan horizontal modem connector that is different from previous ones, and the fan has changed again. Therefore, you would need a new upper case, optical drive bracket, optical drive cable, modem, and fan in addition to the logic board.
This is all under the pretense that you don't change the frame. If you modify the frame slightly, you should be able to use the same frame, shields, and heat sinks, but don't quote me on that.
Let's see if I can walk through this in a coherent answer:
* Looking at the logic boards:
** The 933 MHz/1 GHz (128 RAM) had 3 wall power and speaker connectors, a standard optical drive connector, the modem connector is "tall" and vertical, the fan connector is horizontal, and the upper case connector is a 4-pin connector.
** The 1 GHz (256 RAM)/1.2 GHz changed the modem connector to a shorter connector, and the fan connector is vertical (a slightly different cable length, I believe). Therefore, you would need a new modem, and fan in addition to the logic board. The RJ-11 board also got 1/4" shorter, so you will probably need a new one of those as well.
** The 1.33 GHz changed to 4 wall power and speaker connectors, a ZIF-type optical drive connector, a tan horizontal modem connector that is different from previous ones, and the fan has changed again. Therefore, you would need a new upper case, optical drive bracket, optical drive cable, modem, and fan in addition to the logic board.
This is all under the pretense that you don't change the frame. If you modify the frame slightly, you should be able to use the same frame, shields, and heat sinks, but don't quote me on that.
I hope this helps!!!