A7M266: Athlon, AMD760 (support only DDR266) 
A7N266: Athlon, nVidia northbridge (support both SDRAM & DDR266) 
A7A266: Athlon, ALi chipset (support both SDRAM & DDR266) 
A7V133: Athlon (266 FSB), VIA KT133A (support SDRAM only) 

AMD760ってマジでDDRのみなのか(;´Д`)萎え