Now, as it stands, I haven't been able to figure out what the default voltage applied to the DIMM slots is. Once I figure them out, I'll have two possible courses of action:
If one or both boards defaults to 1.9V: Buy either one and get a nice pair of Mushkin PC26400 1GB DIMMs at 1.9V.
If neither board defaults to 1.9V: Buy the above, and also get a 2x512MB DIMM set rated at 1.8V to allow me to POST and switch the voltage.
Any help is muchly appreciated. Google and Asus' forums have both failed me in this respect.