1MB ROM, support for multiple BIOS: This is only really useful for developers and expert users, with the off chance that larger future ROMs may be necessary.
Once soldered in, more stable: Solder is more secure than just screws
Can be unreliable: If soldered improperly, over time the solder'd modchips get broken soldering due to repeated heating and cooling, and need to have traces fixed
Requires soldering to install
Once installed, xbox is permanently altered: Goodbye warranty
Easy install: Though lining up the pins can be hard, it is easier than soldering
Doesn't damage Xbox, doesn't void warranty if you use hair dryer to move sticker on back before opening
Can be unreliable: A few users say that over time their Matrix modchips become loose due to lack of solder, and they have to reopen their Xbox's and retighten the screws.
Only 256k ROM: Hypothetical future expansion is limited, but as of now, not a disadvantage at all except for developers
Edited by manekineko, 30 November 2002 - 08:04 PM.