L7S7A2 v1.x maximum CPU and HDD supported information as below,
HDD:250G
CPU: AMD Duron 266Mhz FSB CPU - 1800
           AMD Athlon 200Mhz FSB CPU - 1.4G AMD Athlon 266Mhz FSB CPU - 1.4G 
           AMD Palomino 266Mhz FSB CPU - 1.2G
           AMD Athlon XP (0.13u) 266Mhz FSB CPU - 2800+ AMD Athlon XP (0.13u) 333Mhz FSB CPU - 3000+

The L7S7A2 V1.1A is built in CMI 9739 Audio chip with additional Dolby Digital decoder which supports up to 6 channels.

The L7S7A2 V1.1A supports max CPU speed up to AthlonXP 0.13u 3000+.

The L7S7A2 V1.1A supports CPU FSB up to 266MHz. Regarding Barton CPU with 333MHz, it's a overclocking case for this MB & we can't guarantee that it will run well.

The L7S7A2  supports HDD size up to 250GB.