Collection › Macintosh IIsi
D090 · Apple Heritage Museum · Lugano
Macintosh IIsi
1990 · Mac era Classic Macintosh
Introduced
1990
Original price
$ 3800
Processor
Motorola 68030
Original OS
System 6.0.7
Colors
Beige
1976
1984
1998
2001
2007
2020
2026
Pre-Mac
Mac era
iMac era
iPod era
iPhone era
Silicon
Processor
ProcessorMotorola 68030
Speed20 MHz
Architecture32-bit
CacheNo level 2 cache (slot removed)
Memory & graphics
Standard RAM1 MB on motherboard
Max RAM65 MB (using 4-SIMM bank of 100ns 30-pin memory)
RAM type30-pin SIMM
GPUBuilt-in 8-bit video
VRAMUses 64-320 KB of system RAM for video (no separate VRAM)
Resolutions512 x 384 and 640 x 480 at 8-bit; 640 x 870 portrait at 4-bit
Storage
Storage40 MB, 80 MB, or 160 MB hard drive
Connectivity
Audio in3.5mm microphone sound input (built-in audio recording)
Audio out3.5mm stereo headphone sound output
SCSISCSI
ADBOne ADB port
SerialTwo serial ports
Software
Original OSSystem 6.0.7
Power
Weight10 lbs
Expansion slotsOne Processor Direct Slot (PDS); convertible to NuBus with adapter