Mac               Processor/Speed     Rom    RAM      Disk Drives    Hard Drives

128K              68000      7.8MHz   64K    128K       400K
512K              68000      7.8MHz   64K    512K       400K
     Useable Systems: System 1.0-3.2 MFS Format 

512Ke             68000      7.8MHz  128K    512K      800K         20meg Serial HD
Plus              68000      7.8MHz  128K    1M-4M     800K         20-500meg SCSI
Plus Platium      68000      7.8MHz  128K    1M-4M     800K         20-500meg SCSI
     Useable Systems: System 4.2 - 6.X; System 7.X w/4 megs RAM

SE                68000      8MHz    256K    1M-4M      800K         20-500meg SCSI
SE FDHD           68000      8MHz      1M    1M-4M      1.4M         20-500meg SCSI
     Useable Systems: System 6.X; System 7.X w/4 megs RAM.

Classic           68000      8MHz      1M    1M-4M      1.4M         20-500meg SCSI
     Useable Systems: System 6.X; System 7.x w/4Megs RAM.

Lisa/MacXL(stock) 68000      7.5MHz   32K  512K-4M      400K         5Meg Widget
     Useable Systems: Lisa System 1.0 - 7.0

Lisa/MacXL(mod.)  68000 up to 16MHz   32K  512K-12M     400/800K     5Meg Widget/>500 SCSI
     Useable Systems: w/Mac Works 1.0- System 4.2-6.X
                      w/Mac Works 2.0- System 6.X
                      w/Mac Works Pro- System 6.X-7.X (w/4megs RAM)

Note:
     Mac Plus Roms varies in series a,b, and c; which handles SCSI devices differently.
     Mac Platium Plus is a Mac Plus with series C Roms, and a White or Platium Case.
     Mac 512Ke has Mac Plus series A Roms.
     Mac SE can have have up to 3 disk drives (2 internal & 1 external).
     Mac Classic had System 6.05 built-in its ROMs;
            booted when the right keys were held down on start-up.

     Performa 100 is a Mac Classic