The page says 300A-533, which indicates only the old PPGA procesors, but the <A HREF="http://www.soyo.com.tw/cgi-bin/prodinfo.exe?track=regular&board686=6IZA&boardk7=&board586=&board486=¬ebook=&bios=1" target="_new">BIOSUPDATE PAGE FOR YOUR BOARD</A> indicates newer bios that will support Coppermine Celerons (FC-PGA, aka Celeron 2). This would imply that ANY Coppermine processor should work, including both Celeron 2's and PIII's. Your board supports bus speeds up to 133, you could use a PIII 700@933 (the best choice for overclocking), or a Celeron 566 at 850 (the second best choice for overclocking), or any other Celeron/PIII Coppermine you wish!
Video killed my Radio Card!