Mac               Processor/Speed     Rom    RAM      Disk Drives    Hard Drives

SE30              68030w/FPU 16MHz    1M    2M-128M    1.4M         20-500meg SCSI
Classic II        68030      16MHz    1M    4M-10M     1.4M         20-500meg SCSI
Color Classic     68030      16MHz    1M    4M-10M     1.4M         20-500meg SCSI
Color Classic II  68030      32MHz    1M    4M-10M     1.4M         20-500meg SCSI

Useable Systems: System 6.X reqires up to 8megs; System 7.X require minimun of 4megs. 

Note:
     Mac SE30- Need System 7.X w/Mode32 for RAM >8megs to be recognized.
     Classic II and Color Classic has simillar configuiration of Mac LC II.
     Color Classic II is a 32MHz Color Classic sold in Asia (mostly Japan), and parts of Canada.

     Performa 400 is a Classic II; Performa 500 is a Color Classic.

     The SE30 is 40% faster than the Classic Systems, because the Mac SE30 is a 32bit system
     while the Classic Systems were 16bit.
     Although, the Classic System had Audio Input, which the SE30 didn't.