as far as i know, matsonic mobos for socket A are CRAP. a friend of mine had a matsonic mobo with athlon xp 1700+, and had such a bad experience, since that is using only intel. the windows froze every 10-15 minutes, even while ideling, once had lost a ton of data when the computer froze while defragmenting. he was unable to copy and listen to music, or do a cd writing and watch a movie.
so, be careful with matsonic. bios updates weren't good for anything.
cheers